Refactor: Split up CWallet and LegacyScriptPubKeyMan and classes

This moves CWallet members and methods dealing with keys to a new
LegacyScriptPubKeyMan class, and updates calling code to reference the new
class instead of CWallet.

Most of the changes are simple text replacements and variable substitutions
easily verified with:

    git log -p -n1 -U0 --word-diff-regex=.

The only nontrivial chunk of code added is the new LegacyScriptPubKeyMan class
declaration, but this code isn't new and is just selectively copied and moved
from the previous CWallet class declaration. This can be verified with:

    git log -p -n1 --color-moved=dimmed_zebra src/wallet/scriptpubkeyman.h src/wallet/wallet.h

or

    git diff HEAD~1:src/wallet/wallet.h HEAD:src/wallet/scriptpubkeyman.h

This commit does not change behavior.

20 files changed, 901 insertions, 540 deletions

diff --git a/src/interfaces/wallet.cpp b/src/interfaces/wallet.cpp
index 9b0a8b64c9..6bccde1b8f 100644
--- a/src/interfaces/wallet.cpp
+++ b/src/interfaces/wallet.cpp
@@ -46,7 +46,7 @@ WalletTx MakeWalletTx(interfaces::Chain::Lock& locked_chain, CWallet& wallet, co
         result.txout_is_mine.emplace_back(wallet.IsMine(txout));
         result.txout_address.emplace_back();
         result.txout_address_is_mine.emplace_back(ExtractDestination(txout.scriptPubKey, result.txout_address.back()) ?
-                                                      IsMine(wallet, result.txout_address.back()) :
+                                                      wallet.IsMine(result.txout_address.back()) :
                                                       ISMINE_NO);
     }
     result.credit = wtx.GetCredit(locked_chain, ISMINE_ALL);
@@ -117,10 +117,17 @@ public:
         std::string error;
         return m_wallet->GetNewDestination(type, label, dest, error);
     }
-    bool getPubKey(const CKeyID& address, CPubKey& pub_key) override { return m_wallet->GetPubKey(address, pub_key); }
-    bool getPrivKey(const CKeyID& address, CKey& key) override { return m_wallet->GetKey(address, key); }
-    bool isSpendable(const CTxDestination& dest) override { return IsMine(*m_wallet, dest) & ISMINE_SPENDABLE; }
-    bool haveWatchOnly() override { return m_wallet->HaveWatchOnly(); };
+    bool getPubKey(const CKeyID& address, CPubKey& pub_key) override { return m_wallet->GetLegacyScriptPubKeyMan()->GetPubKey(address, pub_key); }
+    bool getPrivKey(const CKeyID& address, CKey& key) override { return m_wallet->GetLegacyScriptPubKeyMan()->GetKey(address, key); }
+    bool isSpendable(const CTxDestination& dest) override { return m_wallet->IsMine(dest) & ISMINE_SPENDABLE; }
+    bool haveWatchOnly() override
+    {
+        auto spk_man = m_wallet->GetLegacyScriptPubKeyMan();
+        if (spk_man) {
+            return spk_man->HaveWatchOnly();
+        }
+        return false;
+    };
     bool setAddressBook(const CTxDestination& dest, const std::string& name, const std::string& purpose) override
     {
         return m_wallet->SetAddressBook(dest, name, purpose);
@@ -143,7 +150,7 @@ public:
             *name = it->second.name;
         }
         if (is_mine) {
-            *is_mine = IsMine(*m_wallet, dest);
+            *is_mine = m_wallet->IsMine(dest);
         }
         if (purpose) {
             *purpose = it->second.purpose;
@@ -155,11 +162,11 @@ public:
         LOCK(m_wallet->cs_wallet);
         std::vector<WalletAddress> result;
         for (const auto& item : m_wallet->mapAddressBook) {
-            result.emplace_back(item.first, IsMine(*m_wallet, item.first), item.second.name, item.second.purpose);
+            result.emplace_back(item.first, m_wallet->IsMine(item.first), item.second.name, item.second.purpose);
         }
         return result;
     }
-    void learnRelatedScripts(const CPubKey& key, OutputType type) override { m_wallet->LearnRelatedScripts(key, type); }
+    void learnRelatedScripts(const CPubKey& key, OutputType type) override { m_wallet->GetLegacyScriptPubKeyMan()->LearnRelatedScripts(key, type); }
     bool addDestData(const CTxDestination& dest, const std::string& key, const std::string& value) override
     {
         LOCK(m_wallet->cs_wallet);
@@ -342,7 +349,7 @@ public:
         result.balance = bal.m_mine_trusted;
         result.unconfirmed_balance = bal.m_mine_untrusted_pending;
         result.immature_balance = bal.m_mine_immature;
-        result.have_watch_only = m_wallet->HaveWatchOnly();
+        result.have_watch_only = haveWatchOnly();
         if (result.have_watch_only) {
             result.watch_only_balance = bal.m_watchonly_trusted;
             result.unconfirmed_watch_only_balance = bal.m_watchonly_untrusted_pending;
diff --git a/src/qt/test/wallettests.cpp b/src/qt/test/wallettests.cpp
index eea874c0d4..379bd8af88 100644
--- a/src/qt/test/wallettests.cpp
+++ b/src/qt/test/wallettests.cpp
@@ -138,9 +138,11 @@ void TestGUI()
     bool firstRun;
     wallet->LoadWallet(firstRun);
     {
+        auto spk_man = wallet->GetLegacyScriptPubKeyMan();
         LOCK(wallet->cs_wallet);
+        AssertLockHeld(spk_man->cs_wallet);
         wallet->SetAddressBook(GetDestinationForKey(test.coinbaseKey.GetPubKey(), wallet->m_default_address_type), "", "receive");
-        wallet->AddKeyPubKey(test.coinbaseKey, test.coinbaseKey.GetPubKey());
+        spk_man->AddKeyPubKey(test.coinbaseKey, test.coinbaseKey.GetPubKey());
     }
     {
         auto locked_chain = wallet->chain().lock();
diff --git a/src/test/util.cpp b/src/test/util.cpp
index b7bb6deeaa..ed031270f2 100644
--- a/src/test/util.cpp
+++ b/src/test/util.cpp
@@ -32,13 +32,15 @@ std::string getnewaddress(CWallet& w)
 
 void importaddress(CWallet& wallet, const std::string& address)
 {
+    auto spk_man = wallet.GetLegacyScriptPubKeyMan();
     LOCK(wallet.cs_wallet);
+    AssertLockHeld(spk_man->cs_wallet);
     const auto dest = DecodeDestination(address);
     assert(IsValidDestination(dest));
     const auto script = GetScriptForDestination(dest);
     wallet.MarkDirty();
-    assert(!wallet.HaveWatchOnly(script));
-    if (!wallet.AddWatchOnly(script, 0 /* nCreateTime */)) assert(false);
+    assert(!spk_man->HaveWatchOnly(script));
+    if (!spk_man->AddWatchOnly(script, 0 /* nCreateTime */)) assert(false);
     wallet.SetAddressBook(dest, /* label */ "", "receive");
 }
 #endif // ENABLE_WALLET
diff --git a/src/wallet/init.cpp b/src/wallet/init.cpp
index c622318894..3657a157b6 100644
--- a/src/wallet/init.cpp
+++ b/src/wallet/init.cpp
@@ -10,7 +10,6 @@
 #include <util/moneystr.h>
 #include <util/system.h>
 #include <util/translation.h>
-#include <wallet/scriptpubkeyman.h>
 #include <wallet/wallet.h>
 #include <walletinitinterface.h>
 
diff --git a/src/wallet/ismine.h b/src/wallet/ismine.h
index 41555fcb93..0bc6c90354 100644
--- a/src/wallet/ismine.h
+++ b/src/wallet/ismine.h
@@ -28,9 +28,6 @@ enum isminetype : unsigned int
 /** used for bitflags of isminetype */
 typedef uint8_t isminefilter;
 
-isminetype IsMine(const CWallet& wallet, const CScript& scriptPubKey);
-isminetype IsMine(const CWallet& wallet, const CTxDestination& dest);
-
 /**
  * Cachable amount subdivided into watchonly and spendable parts.
  */
diff --git a/src/wallet/psbtwallet.cpp b/src/wallet/psbtwallet.cpp
index 721a244afb..aa13cacca4 100644
--- a/src/wallet/psbtwallet.cpp
+++ b/src/wallet/psbtwallet.cpp
@@ -39,12 +39,12 @@ TransactionError FillPSBT(const CWallet* pwallet, PartiallySignedTransaction& ps
             return TransactionError::SIGHASH_MISMATCH;
         }
 
-        complete &= SignPSBTInput(HidingSigningProvider(pwallet, !sign, !bip32derivs), psbtx, i, sighash_type);
+        complete &= SignPSBTInput(HidingSigningProvider(pwallet->GetSigningProvider(), !sign, !bip32derivs), psbtx, i, sighash_type);
     }
 
     // Fill in the bip32 keypaths and redeemscripts for the outputs so that hardware wallets can identify change
     for (unsigned int i = 0; i < psbtx.tx->vout.size(); ++i) {
-        UpdatePSBTOutput(HidingSigningProvider(pwallet, true, !bip32derivs), psbtx, i);
+        UpdatePSBTOutput(HidingSigningProvider(pwallet->GetSigningProvider(), true, !bip32derivs), psbtx, i);
     }
 
     return TransactionError::OK;
diff --git a/src/wallet/rpcdump.cpp b/src/wallet/rpcdump.cpp
index 1cd4cb93b4..0176dc7cda 100644
--- a/src/wallet/rpcdump.cpp
+++ b/src/wallet/rpcdump.cpp
@@ -67,11 +67,11 @@ static std::string DecodeDumpString(const std::string &str) {
     return ret.str();
 }
 
-static bool GetWalletAddressesForKey(CWallet* const pwallet, const CKeyID& keyid, std::string& strAddr, std::string& strLabel) EXCLUSIVE_LOCKS_REQUIRED(pwallet->cs_wallet)
+static bool GetWalletAddressesForKey(LegacyScriptPubKeyMan* spk_man, CWallet* const pwallet, const CKeyID& keyid, std::string& strAddr, std::string& strLabel) EXCLUSIVE_LOCKS_REQUIRED(pwallet->cs_wallet)
 {
     bool fLabelFound = false;
     CKey key;
-    pwallet->GetKey(keyid, key);
+    spk_man->GetKey(keyid, key);
     for (const auto& dest : GetAllDestinationsForKey(key.GetPubKey())) {
         if (pwallet->mapAddressBook.count(dest)) {
             if (!strAddr.empty()) {
@@ -138,6 +138,11 @@ UniValue importprivkey(const JSONRPCRequest& request)
         throw JSONRPCError(RPC_WALLET_ERROR, "Cannot import private keys to a wallet with private keys disabled");
     }
 
+    LegacyScriptPubKeyMan* spk_man = pwallet->GetLegacyScriptPubKeyMan();
+    if (!spk_man) {
+        throw JSONRPCError(RPC_WALLET_ERROR, "This type of wallet does not support this command");
+    }
+
     WalletRescanReserver reserver(pwallet);
     bool fRescan = true;
     {
@@ -264,6 +269,10 @@ UniValue importaddress(const JSONRPCRequest& request)
                 },
             }.Check(request);
 
+    LegacyScriptPubKeyMan* spk_man = pwallet->GetLegacyScriptPubKeyMan();
+    if (!spk_man) {
+        throw JSONRPCError(RPC_WALLET_ERROR, "This type of wallet does not support this command");
+    }
 
     std::string strLabel;
     if (!request.params[1].isNull())
@@ -466,6 +475,10 @@ UniValue importpubkey(const JSONRPCRequest& request)
                 },
             }.Check(request);
 
+    LegacyScriptPubKeyMan* spk_man = pwallet->GetLegacyScriptPubKeyMan();
+    if (!spk_man) {
+        throw JSONRPCError(RPC_WALLET_ERROR, "This type of wallet does not support this command");
+    }
 
     std::string strLabel;
     if (!request.params[1].isNull())
@@ -549,6 +562,11 @@ UniValue importwallet(const JSONRPCRequest& request)
                 },
             }.Check(request);
 
+    LegacyScriptPubKeyMan* spk_man = pwallet->GetLegacyScriptPubKeyMan();
+    if (!spk_man) {
+        throw JSONRPCError(RPC_WALLET_ERROR, "This type of wallet does not support this command");
+    }
+
     if (pwallet->chain().havePruned()) {
         // Exit early and print an error.
         // If a block is pruned after this check, we will import the key(s),
@@ -706,6 +724,11 @@ UniValue dumpprivkey(const JSONRPCRequest& request)
                 },
             }.Check(request);
 
+    LegacyScriptPubKeyMan* spk_man = pwallet->GetLegacyScriptPubKeyMan();
+    if (!spk_man) {
+        throw JSONRPCError(RPC_WALLET_ERROR, "This type of wallet does not support this command");
+    }
+
     auto locked_chain = pwallet->chain().lock();
     LOCK(pwallet->cs_wallet);
 
@@ -716,12 +739,12 @@ UniValue dumpprivkey(const JSONRPCRequest& request)
     if (!IsValidDestination(dest)) {
         throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Invalid Bitcoin address");
     }
-    auto keyid = GetKeyForDestination(*pwallet, dest);
+    auto keyid = GetKeyForDestination(*spk_man, dest);
     if (keyid.IsNull()) {
         throw JSONRPCError(RPC_TYPE_ERROR, "Address does not refer to a key");
     }
     CKey vchSecret;
-    if (!pwallet->GetKey(keyid, vchSecret)) {
+    if (!spk_man->GetKey(keyid, vchSecret)) {
         throw JSONRPCError(RPC_WALLET_ERROR, "Private key for address " + strAddress + " is not known");
     }
     return EncodeSecret(vchSecret);
@@ -755,8 +778,14 @@ UniValue dumpwallet(const JSONRPCRequest& request)
                 },
             }.Check(request);
 
+    LegacyScriptPubKeyMan* spk_man = pwallet->GetLegacyScriptPubKeyMan();
+    if (!spk_man) {
+        throw JSONRPCError(RPC_WALLET_ERROR, "This type of wallet does not support this command");
+    }
+
     auto locked_chain = pwallet->chain().lock();
     LOCK(pwallet->cs_wallet);
+    AssertLockHeld(spk_man->cs_wallet);
 
     EnsureWalletIsUnlocked(pwallet);
 
@@ -778,10 +807,10 @@ UniValue dumpwallet(const JSONRPCRequest& request)
         throw JSONRPCError(RPC_INVALID_PARAMETER, "Cannot open wallet dump file");
 
     std::map<CKeyID, int64_t> mapKeyBirth;
-    const std::map<CKeyID, int64_t>& mapKeyPool = pwallet->GetAllReserveKeys();
+    const std::map<CKeyID, int64_t>& mapKeyPool = spk_man->GetAllReserveKeys();
     pwallet->GetKeyBirthTimes(*locked_chain, mapKeyBirth);
 
-    std::set<CScriptID> scripts = pwallet->GetCScripts();
+    std::set<CScriptID> scripts = spk_man->GetCScripts();
 
     // sort time/key pairs
     std::vector<std::pair<int64_t, CKeyID> > vKeyBirth;
@@ -800,11 +829,11 @@ UniValue dumpwallet(const JSONRPCRequest& request)
     file << "\n";
 
     // add the base58check encoded extended master if the wallet uses HD
-    CKeyID seed_id = pwallet->GetHDChain().seed_id;
+    CKeyID seed_id = spk_man->GetHDChain().seed_id;
     if (!seed_id.IsNull())
     {
         CKey seed;
-        if (pwallet->GetKey(seed_id, seed)) {
+        if (spk_man->GetKey(seed_id, seed)) {
             CExtKey masterKey;
             masterKey.SetSeed(seed.begin(), seed.size());
 
@@ -817,20 +846,20 @@ UniValue dumpwallet(const JSONRPCRequest& request)
         std::string strAddr;
         std::string strLabel;
         CKey key;
-        if (pwallet->GetKey(keyid, key)) {
+        if (spk_man->GetKey(keyid, key)) {
             file << strprintf("%s %s ", EncodeSecret(key), strTime);
-            if (GetWalletAddressesForKey(pwallet, keyid, strAddr, strLabel)) {
+            if (GetWalletAddressesForKey(spk_man, pwallet, keyid, strAddr, strLabel)) {
                file << strprintf("label=%s", strLabel);
             } else if (keyid == seed_id) {
                 file << "hdseed=1";
             } else if (mapKeyPool.count(keyid)) {
                 file << "reserve=1";
-            } else if (pwallet->mapKeyMetadata[keyid].hdKeypath == "s") {
+            } else if (spk_man->mapKeyMetadata[keyid].hdKeypath == "s") {
                 file << "inactivehdseed=1";
             } else {
                 file << "change=1";
             }
-            file << strprintf(" # addr=%s%s\n", strAddr, (pwallet->mapKeyMetadata[keyid].has_key_origin ? " hdkeypath="+WriteHDKeypath(pwallet->mapKeyMetadata[keyid].key_origin.path) : ""));
+            file << strprintf(" # addr=%s%s\n", strAddr, (spk_man->mapKeyMetadata[keyid].has_key_origin ? " hdkeypath="+WriteHDKeypath(spk_man->mapKeyMetadata[keyid].key_origin.path) : ""));
         }
     }
     file << "\n";
@@ -839,11 +868,11 @@ UniValue dumpwallet(const JSONRPCRequest& request)
         std::string create_time = "0";
         std::string address = EncodeDestination(ScriptHash(scriptid));
         // get birth times for scripts with metadata
-        auto it = pwallet->m_script_metadata.find(scriptid);
-        if (it != pwallet->m_script_metadata.end()) {
+        auto it = spk_man->m_script_metadata.find(scriptid);
+        if (it != spk_man->m_script_metadata.end()) {
             create_time = FormatISO8601DateTime(it->second.nCreateTime);
         }
-        if(pwallet->GetCScript(scriptid, script)) {
+        if(spk_man->GetCScript(scriptid, script)) {
             file << strprintf("%s %s script=1", HexStr(script.begin(), script.end()), create_time);
             file << strprintf(" # addr=%s\n", address);
         }
@@ -1219,7 +1248,7 @@ static UniValue ProcessImport(CWallet * const pwallet, const UniValue& data, con
 
         // Check whether we have any work to do
         for (const CScript& script : script_pub_keys) {
-            if (::IsMine(*pwallet, script) & ISMINE_SPENDABLE) {
+            if (pwallet->IsMine(script) & ISMINE_SPENDABLE) {
                 throw JSONRPCError(RPC_WALLET_ERROR, "The wallet already contains the private key for this address or script (\"" + HexStr(script.begin(), script.end()) + "\")");
             }
         }
@@ -1339,6 +1368,11 @@ UniValue importmulti(const JSONRPCRequest& mainRequest)
 
     RPCTypeCheck(mainRequest.params, {UniValue::VARR, UniValue::VOBJ});
 
+    LegacyScriptPubKeyMan* spk_man = pwallet->GetLegacyScriptPubKeyMan();
+    if (!spk_man) {
+        throw JSONRPCError(RPC_WALLET_ERROR, "This type of wallet does not support this command");
+    }
+
     const UniValue& requests = mainRequest.params[0];
 
     //Default options
diff --git a/src/wallet/rpcwallet.cpp b/src/wallet/rpcwallet.cpp
index e571501221..7701767bc2 100644
--- a/src/wallet/rpcwallet.cpp
+++ b/src/wallet/rpcwallet.cpp
@@ -68,7 +68,7 @@ static bool ParseIncludeWatchonly(const UniValue& include_watchonly, const CWall
 
 
 /** Checks if a CKey is in the given CWallet compressed or otherwise*/
-bool HaveKey(const CWallet& wallet, const CKey& key)
+bool HaveKey(const SigningProvider& wallet, const CKey& key)
 {
     CKey key2;
     key2.Set(key.begin(), key.end(), !key.IsCompressed());
@@ -303,7 +303,7 @@ static UniValue setlabel(const JSONRPCRequest& request)
 
     std::string label = LabelFromValue(request.params[1]);
 
-    if (IsMine(*pwallet, dest)) {
+    if (pwallet->IsMine(dest)) {
         pwallet->SetAddressBook(dest, label, "receive");
     } else {
         pwallet->SetAddressBook(dest, label, "send");
@@ -550,9 +550,11 @@ static UniValue signmessage(const JSONRPCRequest& request)
         throw JSONRPCError(RPC_TYPE_ERROR, "Address does not refer to key");
     }
 
+    const SigningProvider* provider = pwallet->GetSigningProvider();
+
     CKey key;
     CKeyID keyID(*pkhash);
-    if (!pwallet->GetKey(keyID, key)) {
+    if (!provider->GetKey(keyID, key)) {
         throw JSONRPCError(RPC_WALLET_ERROR, "Private key not available");
     }
 
@@ -610,7 +612,7 @@ static UniValue getreceivedbyaddress(const JSONRPCRequest& request)
         throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Invalid Bitcoin address");
     }
     CScript scriptPubKey = GetScriptForDestination(dest);
-    if (!IsMine(*pwallet, scriptPubKey)) {
+    if (!pwallet->IsMine(scriptPubKey)) {
         throw JSONRPCError(RPC_WALLET_ERROR, "Address not found in wallet");
     }
 
@@ -694,7 +696,7 @@ static UniValue getreceivedbylabel(const JSONRPCRequest& request)
         for (const CTxOut& txout : wtx.tx->vout)
         {
             CTxDestination address;
-            if (ExtractDestination(txout.scriptPubKey, address) && IsMine(*pwallet, address) && setAddress.count(address)) {
+            if (ExtractDestination(txout.scriptPubKey, address) && pwallet->IsMine(address) && setAddress.count(address)) {
                 if (wtx.GetDepthInMainChain(*locked_chain) >= nMinDepth)
                     nAmount += txout.nValue;
             }
@@ -964,6 +966,11 @@ static UniValue addmultisigaddress(const JSONRPCRequest& request)
                 },
             }.Check(request);
 
+    LegacyScriptPubKeyMan* spk_man = pwallet->GetLegacyScriptPubKeyMan();
+    if (!spk_man) {
+        throw JSONRPCError(RPC_WALLET_ERROR, "This type of wallet does not support this command");
+    }
+
     auto locked_chain = pwallet->chain().lock();
     LOCK(pwallet->cs_wallet);
 
@@ -980,7 +987,7 @@ static UniValue addmultisigaddress(const JSONRPCRequest& request)
         if (IsHex(keys_or_addrs[i].get_str()) && (keys_or_addrs[i].get_str().length() == 66 || keys_or_addrs[i].get_str().length() == 130)) {
             pubkeys.push_back(HexToPubKey(keys_or_addrs[i].get_str()));
         } else {
-            pubkeys.push_back(AddrToPubKey(pwallet, keys_or_addrs[i].get_str()));
+            pubkeys.push_back(AddrToPubKey(spk_man, keys_or_addrs[i].get_str()));
         }
     }
 
@@ -993,7 +1000,7 @@ static UniValue addmultisigaddress(const JSONRPCRequest& request)
 
     // Construct using pay-to-script-hash:
     CScript inner;
-    CTxDestination dest = AddAndGetMultisigDestination(required, pubkeys, output_type, *pwallet, inner);
+    CTxDestination dest = AddAndGetMultisigDestination(required, pubkeys, output_type, *spk_man, inner);
     pwallet->SetAddressBook(dest, label, "send");
 
     UniValue result(UniValue::VOBJ);
@@ -1064,7 +1071,7 @@ static UniValue ListReceived(interfaces::Chain::Lock& locked_chain, CWallet * co
                 continue;
             }
 
-            isminefilter mine = IsMine(*pwallet, address);
+            isminefilter mine = pwallet->IsMine(address);
             if(!(mine & filter))
                 continue;
 
@@ -1288,7 +1295,7 @@ static void ListTransactions(interfaces::Chain::Lock& locked_chain, CWallet* con
         for (const COutputEntry& s : listSent)
         {
             UniValue entry(UniValue::VOBJ);
-            if (involvesWatchonly || (::IsMine(*pwallet, s.destination) & ISMINE_WATCH_ONLY)) {
+            if (involvesWatchonly || (pwallet->IsMine(s.destination) & ISMINE_WATCH_ONLY)) {
                 entry.pushKV("involvesWatchonly", true);
             }
             MaybePushAddress(entry, s.destination);
@@ -1319,7 +1326,7 @@ static void ListTransactions(interfaces::Chain::Lock& locked_chain, CWallet* con
                 continue;
             }
             UniValue entry(UniValue::VOBJ);
-            if (involvesWatchonly || (::IsMine(*pwallet, r.destination) & ISMINE_WATCH_ONLY)) {
+            if (involvesWatchonly || (pwallet->IsMine(r.destination) & ISMINE_WATCH_ONLY)) {
                 entry.pushKV("involvesWatchonly", true);
             }
             MaybePushAddress(entry, r.destination);
@@ -2379,7 +2386,8 @@ static UniValue getbalances(const JSONRPCRequest& request)
         }
         balances.pushKV("mine", balances_mine);
     }
-    if (wallet.HaveWatchOnly()) {
+    auto spk_man = wallet.GetLegacyScriptPubKeyMan();
+    if (spk_man && spk_man->HaveWatchOnly()) {
         UniValue balances_watchonly{UniValue::VOBJ};
         balances_watchonly.pushKV("trusted", ValueFromAmount(bal.m_watchonly_trusted));
         balances_watchonly.pushKV("untrusted_pending", ValueFromAmount(bal.m_watchonly_untrusted_pending));
@@ -2449,7 +2457,15 @@ static UniValue getwalletinfo(const JSONRPCRequest& request)
     obj.pushKV("txcount",       (int)pwallet->mapWallet.size());
     obj.pushKV("keypoololdest", pwallet->GetOldestKeyPoolTime());
     obj.pushKV("keypoolsize", (int64_t)kpExternalSize);
-    CKeyID seed_id = pwallet->GetHDChain().seed_id;
+
+    LegacyScriptPubKeyMan* spk_man = pwallet->GetLegacyScriptPubKeyMan();
+    if (spk_man) {
+        CKeyID seed_id = spk_man->GetHDChain().seed_id;
+        if (!seed_id.IsNull()) {
+            obj.pushKV("hdseedid", seed_id.GetHex());
+        }
+    }
+
     if (pwallet->CanSupportFeature(FEATURE_HD_SPLIT)) {
         obj.pushKV("keypoolsize_hd_internal",   (int64_t)(pwallet->GetKeyPoolSize() - kpExternalSize));
     }
@@ -2457,9 +2473,6 @@ static UniValue getwalletinfo(const JSONRPCRequest& request)
         obj.pushKV("unlocked_until", pwallet->nRelockTime);
     }
     obj.pushKV("paytxfee", ValueFromAmount(pwallet->m_pay_tx_fee.GetFeePerK()));
-    if (!seed_id.IsNull()) {
-        obj.pushKV("hdseedid", seed_id.GetHex());
-    }
     obj.pushKV("private_keys_enabled", !pwallet->IsWalletFlagSet(WALLET_FLAG_DISABLE_PRIVATE_KEYS));
     obj.pushKV("avoid_reuse", pwallet->IsWalletFlagSet(WALLET_FLAG_AVOID_REUSE));
     if (pwallet->IsScanning()) {
@@ -2920,10 +2933,11 @@ static UniValue listunspent(const JSONRPCRequest& request)
                 entry.pushKV("label", i->second.name);
             }
 
+            const SigningProvider* provider = pwallet->GetSigningProvider();
             if (scriptPubKey.IsPayToScriptHash()) {
                 const CScriptID& hash = CScriptID(boost::get<ScriptHash>(address));
                 CScript redeemScript;
-                if (pwallet->GetCScript(hash, redeemScript)) {
+                if (provider->GetCScript(hash, redeemScript)) {
                     entry.pushKV("redeemScript", HexStr(redeemScript.begin(), redeemScript.end()));
                     // Now check if the redeemScript is actually a P2WSH script
                     CTxDestination witness_destination;
@@ -2935,7 +2949,7 @@ static UniValue listunspent(const JSONRPCRequest& request)
                         CScriptID id;
                         CRIPEMD160().Write(whash.begin(), whash.size()).Finalize(id.begin());
                         CScript witnessScript;
-                        if (pwallet->GetCScript(id, witnessScript)) {
+                        if (provider->GetCScript(id, witnessScript)) {
                             entry.pushKV("witnessScript", HexStr(witnessScript.begin(), witnessScript.end()));
                         }
                     }
@@ -2945,7 +2959,7 @@ static UniValue listunspent(const JSONRPCRequest& request)
                 CScriptID id;
                 CRIPEMD160().Write(whash.begin(), whash.size()).Finalize(id.begin());
                 CScript witnessScript;
-                if (pwallet->GetCScript(id, witnessScript)) {
+                if (provider->GetCScript(id, witnessScript)) {
                     entry.pushKV("witnessScript", HexStr(witnessScript.begin(), witnessScript.end()));
                 }
             }
@@ -2957,7 +2971,7 @@ static UniValue listunspent(const JSONRPCRequest& request)
         entry.pushKV("spendable", out.fSpendable);
         entry.pushKV("solvable", out.fSolvable);
         if (out.fSolvable) {
-            auto descriptor = InferDescriptor(scriptPubKey, *pwallet);
+            auto descriptor = InferDescriptor(scriptPubKey, *pwallet->GetLegacyScriptPubKeyMan());
             entry.pushKV("desc", descriptor->ToString());
         }
         if (avoid_reuse) entry.pushKV("reused", reused);
@@ -3267,7 +3281,7 @@ UniValue signrawtransactionwithwallet(const JSONRPCRequest& request)
     // Parse the prevtxs array
     ParsePrevouts(request.params[1], nullptr, coins);
 
-    return SignTransaction(mtx, pwallet, coins, request.params[2]);
+    return SignTransaction(mtx, &*pwallet->GetLegacyScriptPubKeyMan(), coins, request.params[2]);
 }
 
 static UniValue bumpfee(const JSONRPCRequest& request)
@@ -3539,7 +3553,7 @@ UniValue rescanblockchain(const JSONRPCRequest& request)
 class DescribeWalletAddressVisitor : public boost::static_visitor<UniValue>
 {
 public:
-    CWallet * const pwallet;
+    const SigningProvider * const provider;
 
     void ProcessSubScript(const CScript& subscript, UniValue& obj) const
     {
@@ -3575,7 +3589,7 @@ public:
         }
     }
 
-    explicit DescribeWalletAddressVisitor(CWallet* _pwallet) : pwallet(_pwallet) {}
+    explicit DescribeWalletAddressVisitor(const SigningProvider* _provider) : provider(_provider) {}
 
     UniValue operator()(const CNoDestination& dest) const { return UniValue(UniValue::VOBJ); }
 
@@ -3584,7 +3598,7 @@ public:
         CKeyID keyID(pkhash);
         UniValue obj(UniValue::VOBJ);
         CPubKey vchPubKey;
-        if (pwallet && pwallet->GetPubKey(keyID, vchPubKey)) {
+        if (provider && provider->GetPubKey(keyID, vchPubKey)) {
             obj.pushKV("pubkey", HexStr(vchPubKey));
             obj.pushKV("iscompressed", vchPubKey.IsCompressed());
         }
@@ -3596,7 +3610,7 @@ public:
         CScriptID scriptID(scripthash);
         UniValue obj(UniValue::VOBJ);
         CScript subscript;
-        if (pwallet && pwallet->GetCScript(scriptID, subscript)) {
+        if (provider && provider->GetCScript(scriptID, subscript)) {
             ProcessSubScript(subscript, obj);
         }
         return obj;
@@ -3606,7 +3620,7 @@ public:
     {
         UniValue obj(UniValue::VOBJ);
         CPubKey pubkey;
-        if (pwallet && pwallet->GetPubKey(CKeyID(id), pubkey)) {
+        if (provider && provider->GetPubKey(CKeyID(id), pubkey)) {
             obj.pushKV("pubkey", HexStr(pubkey));
         }
         return obj;
@@ -3619,7 +3633,7 @@ public:
         CRIPEMD160 hasher;
         uint160 hash;
         hasher.Write(id.begin(), 32).Finalize(hash.begin());
-        if (pwallet && pwallet->GetCScript(CScriptID(hash), subscript)) {
+        if (provider && provider->GetCScript(CScriptID(hash), subscript)) {
             ProcessSubScript(subscript, obj);
         }
         return obj;
@@ -3632,8 +3646,12 @@ static UniValue DescribeWalletAddress(CWallet* pwallet, const CTxDestination& de
 {
     UniValue ret(UniValue::VOBJ);
     UniValue detail = DescribeAddress(dest);
+    const SigningProvider* provider = nullptr;
+    if (pwallet) {
+        provider = pwallet->GetSigningProvider();
+    }
     ret.pushKVs(detail);
-    ret.pushKVs(boost::apply_visitor(DescribeWalletAddressVisitor(pwallet), dest));
+    ret.pushKVs(boost::apply_visitor(DescribeWalletAddressVisitor(provider), dest));
     return ret;
 }
 
@@ -3722,13 +3740,14 @@ UniValue getaddressinfo(const JSONRPCRequest& request)
 
     CScript scriptPubKey = GetScriptForDestination(dest);
     ret.pushKV("scriptPubKey", HexStr(scriptPubKey.begin(), scriptPubKey.end()));
+    const SigningProvider* provider = pwallet->GetSigningProvider();
 
-    isminetype mine = IsMine(*pwallet, dest);
+    isminetype mine = pwallet->IsMine(dest);
     ret.pushKV("ismine", bool(mine & ISMINE_SPENDABLE));
-    bool solvable = IsSolvable(*pwallet, scriptPubKey);
+    bool solvable = IsSolvable(*provider, scriptPubKey);
     ret.pushKV("solvable", solvable);
     if (solvable) {
-       ret.pushKV("desc", InferDescriptor(scriptPubKey, *pwallet)->ToString());
+       ret.pushKV("desc", InferDescriptor(scriptPubKey, *provider)->ToString());
     }
     ret.pushKV("iswatchonly", bool(mine & ISMINE_WATCH_ONLY));
     UniValue detail = DescribeWalletAddress(pwallet, dest);
@@ -3738,7 +3757,7 @@ UniValue getaddressinfo(const JSONRPCRequest& request)
     }
     ret.pushKV("ischange", pwallet->IsChange(scriptPubKey));
     const CKeyMetadata* meta = nullptr;
-    CKeyID key_id = GetKeyForDestination(*pwallet, dest);
+    CKeyID key_id = GetKeyForDestination(*provider, dest);
     if (!key_id.IsNull()) {
         auto it = pwallet->mapKeyMetadata.find(key_id);
         if (it != pwallet->mapKeyMetadata.end()) {
@@ -3916,6 +3935,11 @@ UniValue sethdseed(const JSONRPCRequest& request)
                 },
             }.Check(request);
 
+    LegacyScriptPubKeyMan* spk_man = pwallet->GetLegacyScriptPubKeyMan();
+    if (!spk_man) {
+        throw JSONRPCError(RPC_WALLET_ERROR, "This type of wallet does not support this command");
+    }
+
     if (pwallet->chain().isInitialBlockDownload()) {
         throw JSONRPCError(RPC_CLIENT_IN_INITIAL_DOWNLOAD, "Cannot set a new HD seed while still in Initial Block Download");
     }
@@ -3941,22 +3965,22 @@ UniValue sethdseed(const JSONRPCRequest& request)
 
     CPubKey master_pub_key;
     if (request.params[1].isNull()) {
-        master_pub_key = pwallet->GenerateNewSeed();
+        master_pub_key = spk_man->GenerateNewSeed();
     } else {
         CKey key = DecodeSecret(request.params[1].get_str());
         if (!key.IsValid()) {
             throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Invalid private key");
         }
 
-        if (HaveKey(*pwallet, key)) {
+        if (HaveKey(*spk_man, key)) {
             throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Already have this key (either as an HD seed or as a loose private key)");
         }
 
-        master_pub_key = pwallet->DeriveNewSeed(key);
+        master_pub_key = spk_man->DeriveNewSeed(key);
     }
 
-    pwallet->SetHDSeed(master_pub_key);
-    if (flush_key_pool) pwallet->NewKeyPool();
+    spk_man->SetHDSeed(master_pub_key);
+    if (flush_key_pool) spk_man->NewKeyPool();
 
     return NullUniValue;
 }
diff --git a/src/wallet/scriptpubkeyman.cpp b/src/wallet/scriptpubkeyman.cpp
index 77ee8f97cb..c13fddfaf3 100644
--- a/src/wallet/scriptpubkeyman.cpp
+++ b/src/wallet/scriptpubkeyman.cpp
@@ -11,11 +11,10 @@
 #include <wallet/scriptpubkeyman.h>
 #include <wallet/wallet.h>
 
-bool CWallet::GetNewDestination(const OutputType type, const std::string label, CTxDestination& dest, std::string& error)
+bool LegacyScriptPubKeyMan::GetNewDestination(const OutputType type, const std::string label, CTxDestination& dest, std::string& error)
 {
     LOCK(cs_wallet);
     error.clear();
-
     TopUpKeyPool();
 
     // Generate a new key that is added to wallet
@@ -27,7 +26,7 @@ bool CWallet::GetNewDestination(const OutputType type, const std::string label,
     LearnRelatedScripts(new_key, type);
     dest = GetDestinationForKey(new_key, type);
 
-    SetAddressBook(dest, label, "receive");
+    m_wallet.SetAddressBook(dest, label, "receive");
     return true;
 }
 
@@ -66,7 +65,7 @@ bool PermitsUncompressed(IsMineSigVersion sigversion)
     return sigversion == IsMineSigVersion::TOP || sigversion == IsMineSigVersion::P2SH;
 }
 
-bool HaveKeys(const std::vector<valtype>& pubkeys, const CWallet& keystore)
+bool HaveKeys(const std::vector<valtype>& pubkeys, const LegacyScriptPubKeyMan& keystore)
 {
     for (const valtype& pubkey : pubkeys) {
         CKeyID keyID = CPubKey(pubkey).GetID();
@@ -75,7 +74,7 @@ bool HaveKeys(const std::vector<valtype>& pubkeys, const CWallet& keystore)
     return true;
 }
 
-IsMineResult IsMineInner(const CWallet& keystore, const CScript& scriptPubKey, IsMineSigVersion sigversion)
+IsMineResult IsMineInner(const LegacyScriptPubKeyMan& keystore, const CScript& scriptPubKey, IsMineSigVersion sigversion)
 {
     IsMineResult ret = IsMineResult::NO;
 
@@ -192,9 +191,9 @@ IsMineResult IsMineInner(const CWallet& keystore, const CScript& scriptPubKey, I
 
 } // namespace
 
-isminetype IsMine(const CWallet& keystore, const CScript& scriptPubKey)
+isminetype LegacyScriptPubKeyMan::IsMine(const CScript& script) const
 {
-    switch (IsMineInner(keystore, scriptPubKey, IsMineSigVersion::TOP)) {
+    switch (IsMineInner(*this, script, IsMineSigVersion::TOP)) {
     case IsMineResult::INVALID:
     case IsMineResult::NO:
         return ISMINE_NO;
@@ -244,7 +243,7 @@ bool CWallet::Unlock(const CKeyingMaterial& vMasterKeyIn, bool accept_no_keys)
     return true;
 }
 
-bool CWallet::EncryptKeys(CKeyingMaterial& vMasterKeyIn)
+bool LegacyScriptPubKeyMan::EncryptKeys(CKeyingMaterial& vMasterKeyIn)
 {
     LOCK(cs_KeyStore);
     if (!mapCryptedKeys.empty() || IsCrypted())
@@ -266,14 +265,14 @@ bool CWallet::EncryptKeys(CKeyingMaterial& vMasterKeyIn)
     return true;
 }
 
-void CWallet::UpgradeKeyMetadata()
+void LegacyScriptPubKeyMan::UpgradeKeyMetadata()
 {
     AssertLockHeld(cs_wallet);
-    if (IsLocked() || IsWalletFlagSet(WALLET_FLAG_KEY_ORIGIN_METADATA)) {
+    if (m_storage.IsLocked() || m_storage.IsWalletFlagSet(WALLET_FLAG_KEY_ORIGIN_METADATA)) {
         return;
     }
 
-    std::unique_ptr<WalletBatch> batch = MakeUnique<WalletBatch>(*database);
+    std::unique_ptr<WalletBatch> batch = MakeUnique<WalletBatch>(m_storage.GetDatabase());
     for (auto& meta_pair : mapKeyMetadata) {
         CKeyMetadata& meta = meta_pair.second;
         if (!meta.hd_seed_id.IsNull() && !meta.has_key_origin && meta.hdKeypath != "s") { // If the hdKeypath is "s", that's the seed and it doesn't have a key origin
@@ -300,20 +299,20 @@ void CWallet::UpgradeKeyMetadata()
         }
     }
     batch.reset(); //write before setting the flag
-    SetWalletFlag(WALLET_FLAG_KEY_ORIGIN_METADATA);
+    m_storage.SetWalletFlag(WALLET_FLAG_KEY_ORIGIN_METADATA);
 }
 
-bool CWallet::IsHDEnabled() const
+bool LegacyScriptPubKeyMan::IsHDEnabled() const
 {
     return !hdChain.seed_id.IsNull();
 }
 
-bool CWallet::CanGetAddresses(bool internal)
+bool LegacyScriptPubKeyMan::CanGetAddresses(bool internal)
 {
     LOCK(cs_wallet);
     // Check if the keypool has keys
     bool keypool_has_keys;
-    if (internal && CanSupportFeature(FEATURE_HD_SPLIT)) {
+    if (internal && m_storage.CanSupportFeature(FEATURE_HD_SPLIT)) {
         keypool_has_keys = setInternalKeyPool.size() > 0;
     } else {
         keypool_has_keys = KeypoolCountExternalKeys() > 0;
@@ -339,15 +338,15 @@ static int64_t GetOldestKeyTimeInPool(const std::set<int64_t>& setKeyPool, Walle
     return keypool.nTime;
 }
 
-int64_t CWallet::GetOldestKeyPoolTime()
+int64_t LegacyScriptPubKeyMan::GetOldestKeyPoolTime()
 {
     LOCK(cs_wallet);
 
-    WalletBatch batch(*database);
+    WalletBatch batch(m_storage.GetDatabase());
 
     // load oldest key from keypool, get time and return
     int64_t oldestKey = GetOldestKeyTimeInPool(setExternalKeyPool, batch);
-    if (IsHDEnabled() && CanSupportFeature(FEATURE_HD_SPLIT)) {
+    if (IsHDEnabled() && m_storage.CanSupportFeature(FEATURE_HD_SPLIT)) {
         oldestKey = std::max(GetOldestKeyTimeInPool(setInternalKeyPool, batch), oldestKey);
         if (!set_pre_split_keypool.empty()) {
             oldestKey = std::max(GetOldestKeyTimeInPool(set_pre_split_keypool, batch), oldestKey);
@@ -357,7 +356,7 @@ int64_t CWallet::GetOldestKeyPoolTime()
     return oldestKey;
 }
 
-size_t CWallet::KeypoolCountExternalKeys()
+size_t LegacyScriptPubKeyMan::KeypoolCountExternalKeys()
 {
     AssertLockHeld(cs_wallet);
     return setExternalKeyPool.size() + set_pre_split_keypool.size();
@@ -367,7 +366,7 @@ size_t CWallet::KeypoolCountExternalKeys()
  * Update wallet first key creation time. This should be called whenever keys
  * are added to the wallet, with the oldest key creation time.
  */
-void CWallet::UpdateTimeFirstKey(int64_t nCreateTime)
+void LegacyScriptPubKeyMan::UpdateTimeFirstKey(int64_t nCreateTime)
 {
     AssertLockHeld(cs_wallet);
     if (nCreateTime <= 1) {
@@ -379,18 +378,16 @@ void CWallet::UpdateTimeFirstKey(int64_t nCreateTime)
     }
 }
 
-bool CWallet::AddKeyPubKey(const CKey& secret, const CPubKey &pubkey)
+bool LegacyScriptPubKeyMan::AddKeyPubKey(const CKey& secret, const CPubKey &pubkey)
 {
-    WalletBatch batch(*database);
-    return CWallet::AddKeyPubKeyWithDB(batch, secret, pubkey);
+    WalletBatch batch(m_storage.GetDatabase());
+    return LegacyScriptPubKeyMan::AddKeyPubKeyWithDB(batch, secret, pubkey);
 }
 
-bool CWallet::AddKeyPubKeyWithDB(WalletBatch& batch, const CKey& secret, const CPubKey& pubkey)
+bool LegacyScriptPubKeyMan::AddKeyPubKeyWithDB(WalletBatch& batch, const CKey& secret, const CPubKey& pubkey)
 {
-    AssertLockHeld(cs_wallet);
-
     // Make sure we aren't adding private keys to private key disabled wallets
-    assert(!IsWalletFlagSet(WALLET_FLAG_DISABLE_PRIVATE_KEYS));
+    assert(!m_storage.IsWalletFlagSet(WALLET_FLAG_DISABLE_PRIVATE_KEYS));
 
     // FillableSigningProvider has no concept of wallet databases, but calls AddCryptedKey
     // which is overridden below.  To avoid flushes, the database handle is
@@ -421,11 +418,11 @@ bool CWallet::AddKeyPubKeyWithDB(WalletBatch& batch, const CKey& secret, const C
                                                  secret.GetPrivKey(),
                                                  mapKeyMetadata[pubkey.GetID()]);
     }
-    UnsetWalletFlagWithDB(batch, WALLET_FLAG_BLANK_WALLET);
+    m_storage.UnsetWalletFlagWithDB(batch, WALLET_FLAG_BLANK_WALLET);
     return true;
 }
 
-bool CWallet::LoadCScript(const CScript& redeemScript)
+bool LegacyScriptPubKeyMan::LoadCScript(const CScript& redeemScript)
 {
     /* A sanity check was added in pull #3843 to avoid adding redeemScripts
      * that never can be redeemed. However, old wallets may still contain
@@ -440,28 +437,28 @@ bool CWallet::LoadCScript(const CScript& redeemScript)
     return FillableSigningProvider::AddCScript(redeemScript);
 }
 
-void CWallet::LoadKeyMetadata(const CKeyID& keyID, const CKeyMetadata& meta)
+void LegacyScriptPubKeyMan::LoadKeyMetadata(const CKeyID& keyID, const CKeyMetadata& meta)
 {
     AssertLockHeld(cs_wallet);
     UpdateTimeFirstKey(meta.nCreateTime);
     mapKeyMetadata[keyID] = meta;
 }
 
-void CWallet::LoadScriptMetadata(const CScriptID& script_id, const CKeyMetadata& meta)
+void LegacyScriptPubKeyMan::LoadScriptMetadata(const CScriptID& script_id, const CKeyMetadata& meta)
 {
     AssertLockHeld(cs_wallet);
     UpdateTimeFirstKey(meta.nCreateTime);
     m_script_metadata[script_id] = meta;
 }
 
-bool CWallet::AddKeyPubKeyInner(const CKey& key, const CPubKey &pubkey)
+bool LegacyScriptPubKeyMan::AddKeyPubKeyInner(const CKey& key, const CPubKey &pubkey)
 {
     LOCK(cs_KeyStore);
     if (!IsCrypted()) {
         return FillableSigningProvider::AddKeyPubKey(key, pubkey);
     }
 
-    if (IsLocked()) {
+    if (m_storage.IsLocked()) {
         return false;
     }
 
@@ -477,12 +474,12 @@ bool CWallet::AddKeyPubKeyInner(const CKey& key, const CPubKey &pubkey)
     return true;
 }
 
-bool CWallet::LoadCryptedKey(const CPubKey &vchPubKey, const std::vector<unsigned char> &vchCryptedSecret)
+bool LegacyScriptPubKeyMan::LoadCryptedKey(const CPubKey &vchPubKey, const std::vector<unsigned char> &vchCryptedSecret)
 {
     return AddCryptedKeyInner(vchPubKey, vchCryptedSecret);
 }
 
-bool CWallet::AddCryptedKeyInner(const CPubKey &vchPubKey, const std::vector<unsigned char> &vchCryptedSecret)
+bool LegacyScriptPubKeyMan::AddCryptedKeyInner(const CPubKey &vchPubKey, const std::vector<unsigned char> &vchCryptedSecret)
 {
     LOCK(cs_KeyStore);
     if (!SetCrypted()) {
@@ -494,7 +491,7 @@ bool CWallet::AddCryptedKeyInner(const CPubKey &vchPubKey, const std::vector<uns
     return true;
 }
 
-bool CWallet::AddCryptedKey(const CPubKey &vchPubKey,
+bool LegacyScriptPubKeyMan::AddCryptedKey(const CPubKey &vchPubKey,
                             const std::vector<unsigned char> &vchCryptedSecret)
 {
     if (!AddCryptedKeyInner(vchPubKey, vchCryptedSecret))
@@ -506,19 +503,19 @@ bool CWallet::AddCryptedKey(const CPubKey &vchPubKey,
                                                         vchCryptedSecret,
                                                         mapKeyMetadata[vchPubKey.GetID()]);
         else
-            return WalletBatch(*database).WriteCryptedKey(vchPubKey,
+            return WalletBatch(m_storage.GetDatabase()).WriteCryptedKey(vchPubKey,
                                                             vchCryptedSecret,
                                                             mapKeyMetadata[vchPubKey.GetID()]);
     }
 }
 
-bool CWallet::HaveWatchOnly(const CScript &dest) const
+bool LegacyScriptPubKeyMan::HaveWatchOnly(const CScript &dest) const
 {
     LOCK(cs_KeyStore);
     return setWatchOnly.count(dest) > 0;
 }
 
-bool CWallet::HaveWatchOnly() const
+bool LegacyScriptPubKeyMan::HaveWatchOnly() const
 {
     LOCK(cs_KeyStore);
     return (!setWatchOnly.empty());
@@ -531,7 +528,7 @@ static bool ExtractPubKey(const CScript &dest, CPubKey& pubKeyOut)
         (pubKeyOut = CPubKey(solutions[0])).IsFullyValid();
 }
 
-bool CWallet::RemoveWatchOnly(const CScript &dest)
+bool LegacyScriptPubKeyMan::RemoveWatchOnly(const CScript &dest)
 {
     AssertLockHeld(cs_wallet);
     {
@@ -547,18 +544,18 @@ bool CWallet::RemoveWatchOnly(const CScript &dest)
 
     if (!HaveWatchOnly())
         NotifyWatchonlyChanged(false);
-    if (!WalletBatch(*database).EraseWatchOnly(dest))
+    if (!WalletBatch(m_storage.GetDatabase()).EraseWatchOnly(dest))
         return false;
 
     return true;
 }
 
-bool CWallet::LoadWatchOnly(const CScript &dest)
+bool LegacyScriptPubKeyMan::LoadWatchOnly(const CScript &dest)
 {
     return AddWatchOnlyInMem(dest);
 }
 
-bool CWallet::AddWatchOnlyInMem(const CScript &dest)
+bool LegacyScriptPubKeyMan::AddWatchOnlyInMem(const CScript &dest)
 {
     LOCK(cs_KeyStore);
     setWatchOnly.insert(dest);
@@ -570,7 +567,7 @@ bool CWallet::AddWatchOnlyInMem(const CScript &dest)
     return true;
 }
 
-bool CWallet::AddWatchOnlyWithDB(WalletBatch &batch, const CScript& dest)
+bool LegacyScriptPubKeyMan::AddWatchOnlyWithDB(WalletBatch &batch, const CScript& dest)
 {
     if (!AddWatchOnlyInMem(dest))
         return false;
@@ -578,40 +575,40 @@ bool CWallet::AddWatchOnlyWithDB(WalletBatch &batch, const CScript& dest)
     UpdateTimeFirstKey(meta.nCreateTime);
     NotifyWatchonlyChanged(true);
     if (batch.WriteWatchOnly(dest, meta)) {
-        UnsetWalletFlagWithDB(batch, WALLET_FLAG_BLANK_WALLET);
+        m_storage.UnsetWalletFlagWithDB(batch, WALLET_FLAG_BLANK_WALLET);
         return true;
     }
     return false;
 }
 
-bool CWallet::AddWatchOnlyWithDB(WalletBatch &batch, const CScript& dest, int64_t create_time)
+bool LegacyScriptPubKeyMan::AddWatchOnlyWithDB(WalletBatch &batch, const CScript& dest, int64_t create_time)
 {
     m_script_metadata[CScriptID(dest)].nCreateTime = create_time;
     return AddWatchOnlyWithDB(batch, dest);
 }
 
-bool CWallet::AddWatchOnly(const CScript& dest)
+bool LegacyScriptPubKeyMan::AddWatchOnly(const CScript& dest)
 {
-    WalletBatch batch(*database);
+    WalletBatch batch(m_storage.GetDatabase());
     return AddWatchOnlyWithDB(batch, dest);
 }
 
-bool CWallet::AddWatchOnly(const CScript& dest, int64_t nCreateTime)
+bool LegacyScriptPubKeyMan::AddWatchOnly(const CScript& dest, int64_t nCreateTime)
 {
     m_script_metadata[CScriptID(dest)].nCreateTime = nCreateTime;
     return AddWatchOnly(dest);
 }
 
-void CWallet::SetHDChain(const CHDChain& chain, bool memonly)
+void LegacyScriptPubKeyMan::SetHDChain(const CHDChain& chain, bool memonly)
 {
     LOCK(cs_wallet);
-    if (!memonly && !WalletBatch(*database).WriteHDChain(chain))
+    if (!memonly && !WalletBatch(m_storage.GetDatabase()).WriteHDChain(chain))
         throw std::runtime_error(std::string(__func__) + ": writing chain failed");
 
     hdChain = chain;
 }
 
-bool CWallet::HaveKey(const CKeyID &address) const
+bool LegacyScriptPubKeyMan::HaveKey(const CKeyID &address) const
 {
     LOCK(cs_KeyStore);
     if (!IsCrypted()) {
@@ -620,7 +617,7 @@ bool CWallet::HaveKey(const CKeyID &address) const
     return mapCryptedKeys.count(address) > 0;
 }
 
-bool CWallet::GetKey(const CKeyID &address, CKey& keyOut) const
+bool LegacyScriptPubKeyMan::GetKey(const CKeyID &address, CKey& keyOut) const
 {
     LOCK(cs_KeyStore);
     if (!IsCrypted()) {
@@ -637,7 +634,7 @@ bool CWallet::GetKey(const CKeyID &address, CKey& keyOut) const
     return false;
 }
 
-bool CWallet::GetKeyOrigin(const CKeyID& keyID, KeyOriginInfo& info) const
+bool LegacyScriptPubKeyMan::GetKeyOrigin(const CKeyID& keyID, KeyOriginInfo& info) const
 {
     CKeyMetadata meta;
     {
@@ -656,7 +653,7 @@ bool CWallet::GetKeyOrigin(const CKeyID& keyID, KeyOriginInfo& info) const
     return true;
 }
 
-bool CWallet::GetWatchPubKey(const CKeyID &address, CPubKey &pubkey_out) const
+bool LegacyScriptPubKeyMan::GetWatchPubKey(const CKeyID &address, CPubKey &pubkey_out) const
 {
     LOCK(cs_KeyStore);
     WatchKeyMap::const_iterator it = mapWatchKeys.find(address);
@@ -667,7 +664,7 @@ bool CWallet::GetWatchPubKey(const CKeyID &address, CPubKey &pubkey_out) const
     return false;
 }
 
-bool CWallet::GetPubKey(const CKeyID &address, CPubKey& vchPubKeyOut) const
+bool LegacyScriptPubKeyMan::GetPubKey(const CKeyID &address, CPubKey& vchPubKeyOut) const
 {
     LOCK(cs_KeyStore);
     if (!IsCrypted()) {
@@ -687,12 +684,12 @@ bool CWallet::GetPubKey(const CKeyID &address, CPubKey& vchPubKeyOut) const
     return GetWatchPubKey(address, vchPubKeyOut);
 }
 
-CPubKey CWallet::GenerateNewKey(WalletBatch &batch, bool internal)
+CPubKey LegacyScriptPubKeyMan::GenerateNewKey(WalletBatch &batch, bool internal)
 {
-    assert(!IsWalletFlagSet(WALLET_FLAG_DISABLE_PRIVATE_KEYS));
-    assert(!IsWalletFlagSet(WALLET_FLAG_BLANK_WALLET));
+    assert(!m_storage.IsWalletFlagSet(WALLET_FLAG_DISABLE_PRIVATE_KEYS));
+    assert(!m_storage.IsWalletFlagSet(WALLET_FLAG_BLANK_WALLET));
     AssertLockHeld(cs_wallet);
-    bool fCompressed = CanSupportFeature(FEATURE_COMPRPUBKEY); // default to compressed public keys if we want 0.6.0 wallets
+    bool fCompressed = m_storage.CanSupportFeature(FEATURE_COMPRPUBKEY); // default to compressed public keys if we want 0.6.0 wallets
 
     CKey secret;
 
@@ -702,14 +699,14 @@ CPubKey CWallet::GenerateNewKey(WalletBatch &batch, bool internal)
 
     // use HD key derivation if HD was enabled during wallet creation and a seed is present
     if (IsHDEnabled()) {
-        DeriveNewChildKey(batch, metadata, secret, (CanSupportFeature(FEATURE_HD_SPLIT) ? internal : false));
+        DeriveNewChildKey(batch, metadata, secret, (m_storage.CanSupportFeature(FEATURE_HD_SPLIT) ? internal : false));
     } else {
         secret.MakeNewKey(fCompressed);
     }
 
     // Compressed public keys were introduced in version 0.6.0
     if (fCompressed) {
-        SetMinVersion(FEATURE_COMPRPUBKEY);
+        m_storage.SetMinVersion(FEATURE_COMPRPUBKEY);
     }
 
     CPubKey pubkey = secret.GetPubKey();
@@ -726,7 +723,7 @@ CPubKey CWallet::GenerateNewKey(WalletBatch &batch, bool internal)
 
 const uint32_t BIP32_HARDENED_KEY_LIMIT = 0x80000000;
 
-void CWallet::DeriveNewChildKey(WalletBatch &batch, CKeyMetadata& metadata, CKey& secret, bool internal)
+void LegacyScriptPubKeyMan::DeriveNewChildKey(WalletBatch &batch, CKeyMetadata& metadata, CKey& secret, bool internal)
 {
     // for now we use a fixed keypath scheme of m/0'/0'/k
     CKey seed;                     //seed (256bit)
@@ -746,7 +743,7 @@ void CWallet::DeriveNewChildKey(WalletBatch &batch, CKeyMetadata& metadata, CKey
     masterKey.Derive(accountKey, BIP32_HARDENED_KEY_LIMIT);
 
     // derive m/0'/0' (external chain) OR m/0'/1' (internal chain)
-    assert(internal ? CanSupportFeature(FEATURE_HD_SPLIT) : true);
+    assert(internal ? m_storage.CanSupportFeature(FEATURE_HD_SPLIT) : true);
     accountKey.Derive(chainChildKey, BIP32_HARDENED_KEY_LIMIT+(internal ? 1 : 0));
 
     // derive child key at next index, skip keys already known to the wallet
@@ -781,7 +778,7 @@ void CWallet::DeriveNewChildKey(WalletBatch &batch, CKeyMetadata& metadata, CKey
         throw std::runtime_error(std::string(__func__) + ": Writing HD chain model failed");
 }
 
-void CWallet::LoadKeyPool(int64_t nIndex, const CKeyPool &keypool)
+void LegacyScriptPubKeyMan::LoadKeyPool(int64_t nIndex, const CKeyPool &keypool)
 {
     AssertLockHeld(cs_wallet);
     if (keypool.m_pre_split) {
@@ -802,22 +799,22 @@ void CWallet::LoadKeyPool(int64_t nIndex, const CKeyPool &keypool)
         mapKeyMetadata[keyid] = CKeyMetadata(keypool.nTime);
 }
 
-bool CWallet::CanGenerateKeys()
+bool LegacyScriptPubKeyMan::CanGenerateKeys()
 {
     // A wallet can generate keys if it has an HD seed (IsHDEnabled) or it is a non-HD wallet (pre FEATURE_HD)
     LOCK(cs_wallet);
-    return IsHDEnabled() || !CanSupportFeature(FEATURE_HD);
+    return IsHDEnabled() || !m_storage.CanSupportFeature(FEATURE_HD);
 }
 
-CPubKey CWallet::GenerateNewSeed()
+CPubKey LegacyScriptPubKeyMan::GenerateNewSeed()
 {
-    assert(!IsWalletFlagSet(WALLET_FLAG_DISABLE_PRIVATE_KEYS));
+    assert(!m_storage.IsWalletFlagSet(WALLET_FLAG_DISABLE_PRIVATE_KEYS));
     CKey key;
     key.MakeNewKey(true);
     return DeriveNewSeed(key);
 }
 
-CPubKey CWallet::DeriveNewSeed(const CKey& key)
+CPubKey LegacyScriptPubKeyMan::DeriveNewSeed(const CKey& key)
 {
     int64_t nCreationTime = GetTime();
     CKeyMetadata metadata(nCreationTime);
@@ -845,32 +842,32 @@ CPubKey CWallet::DeriveNewSeed(const CKey& key)
     return seed;
 }
 
-void CWallet::SetHDSeed(const CPubKey& seed)
+void LegacyScriptPubKeyMan::SetHDSeed(const CPubKey& seed)
 {
     LOCK(cs_wallet);
     // store the keyid (hash160) together with
     // the child index counter in the database
     // as a hdchain object
     CHDChain newHdChain;
-    newHdChain.nVersion = CanSupportFeature(FEATURE_HD_SPLIT) ? CHDChain::VERSION_HD_CHAIN_SPLIT : CHDChain::VERSION_HD_BASE;
+    newHdChain.nVersion = m_storage.CanSupportFeature(FEATURE_HD_SPLIT) ? CHDChain::VERSION_HD_CHAIN_SPLIT : CHDChain::VERSION_HD_BASE;
     newHdChain.seed_id = seed.GetID();
     SetHDChain(newHdChain, false);
     NotifyCanGetAddressesChanged();
-    UnsetWalletFlag(WALLET_FLAG_BLANK_WALLET);
+    m_wallet.UnsetWalletFlag(WALLET_FLAG_BLANK_WALLET);
 }
 
 /**
  * Mark old keypool keys as used,
  * and generate all new keys
  */
-bool CWallet::NewKeyPool()
+bool LegacyScriptPubKeyMan::NewKeyPool()
 {
-    if (IsWalletFlagSet(WALLET_FLAG_DISABLE_PRIVATE_KEYS)) {
+    if (m_storage.IsWalletFlagSet(WALLET_FLAG_DISABLE_PRIVATE_KEYS)) {
         return false;
     }
     {
         LOCK(cs_wallet);
-        WalletBatch batch(*database);
+        WalletBatch batch(m_storage.GetDatabase());
 
         for (const int64_t nIndex : setInternalKeyPool) {
             batch.ErasePool(nIndex);
@@ -892,12 +889,12 @@ bool CWallet::NewKeyPool()
         if (!TopUpKeyPool()) {
             return false;
         }
-        WalletLogPrintf("CWallet::NewKeyPool rewrote keypool\n");
+        WalletLogPrintf("LegacyScriptPubKeyMan::NewKeyPool rewrote keypool\n");
     }
     return true;
 }
 
-bool CWallet::TopUpKeyPool(unsigned int kpSize)
+bool LegacyScriptPubKeyMan::TopUpKeyPool(unsigned int kpSize)
 {
     if (!CanGenerateKeys()) {
         return false;
@@ -905,7 +902,7 @@ bool CWallet::TopUpKeyPool(unsigned int kpSize)
     {
         LOCK(cs_wallet);
 
-        if (IsLocked()) return false;
+        if (m_storage.IsLocked()) return false;
 
         // Top up key pool
         unsigned int nTargetSize;
@@ -919,13 +916,13 @@ bool CWallet::TopUpKeyPool(unsigned int kpSize)
         int64_t missingExternal = std::max(std::max((int64_t) nTargetSize, (int64_t) 1) - (int64_t)setExternalKeyPool.size(), (int64_t) 0);
         int64_t missingInternal = std::max(std::max((int64_t) nTargetSize, (int64_t) 1) - (int64_t)setInternalKeyPool.size(), (int64_t) 0);
 
-        if (!IsHDEnabled() || !CanSupportFeature(FEATURE_HD_SPLIT))
+        if (!IsHDEnabled() || !m_storage.CanSupportFeature(FEATURE_HD_SPLIT))
         {
             // don't create extra internal keys
             missingInternal = 0;
         }
         bool internal = false;
-        WalletBatch batch(*database);
+        WalletBatch batch(m_storage.GetDatabase());
         for (int64_t i = missingInternal + missingExternal; i--;)
         {
             if (i < missingInternal) {
@@ -943,7 +940,7 @@ bool CWallet::TopUpKeyPool(unsigned int kpSize)
     return true;
 }
 
-void CWallet::AddKeypoolPubkeyWithDB(const CPubKey& pubkey, const bool internal, WalletBatch& batch)
+void LegacyScriptPubKeyMan::AddKeypoolPubkeyWithDB(const CPubKey& pubkey, const bool internal, WalletBatch& batch)
 {
     LOCK(cs_wallet);
     assert(m_max_keypool_index < std::numeric_limits<int64_t>::max()); // How in the hell did you use so many keys?
@@ -959,15 +956,15 @@ void CWallet::AddKeypoolPubkeyWithDB(const CPubKey& pubkey, const bool internal,
     m_pool_key_to_index[pubkey.GetID()] = index;
 }
 
-void CWallet::KeepKey(int64_t nIndex)
+void LegacyScriptPubKeyMan::KeepKey(int64_t nIndex)
 {
     // Remove from key pool
-    WalletBatch batch(*database);
+    WalletBatch batch(m_storage.GetDatabase());
     batch.ErasePool(nIndex);
     WalletLogPrintf("keypool keep %d\n", nIndex);
 }
 
-void CWallet::ReturnKey(int64_t nIndex, bool fInternal, const CPubKey& pubkey)
+void LegacyScriptPubKeyMan::ReturnKey(int64_t nIndex, bool fInternal, const CPubKey& pubkey)
 {
     // Return to key pool
     {
@@ -985,7 +982,7 @@ void CWallet::ReturnKey(int64_t nIndex, bool fInternal, const CPubKey& pubkey)
     WalletLogPrintf("keypool return %d\n", nIndex);
 }
 
-bool CWallet::GetKeyFromPool(CPubKey& result, bool internal)
+bool LegacyScriptPubKeyMan::GetKeyFromPool(CPubKey& result, bool internal)
 {
     if (!CanGetAddresses(internal)) {
         return false;
@@ -995,9 +992,9 @@ bool CWallet::GetKeyFromPool(CPubKey& result, bool internal)
     {
         LOCK(cs_wallet);
         int64_t nIndex;
-        if (!ReserveKeyFromKeyPool(nIndex, keypool, internal) && !IsWalletFlagSet(WALLET_FLAG_DISABLE_PRIVATE_KEYS)) {
-            if (IsLocked()) return false;
-            WalletBatch batch(*database);
+        if (!ReserveKeyFromKeyPool(nIndex, keypool, internal) && !m_storage.IsWalletFlagSet(WALLET_FLAG_DISABLE_PRIVATE_KEYS)) {
+            if (m_storage.IsLocked()) return false;
+            WalletBatch batch(m_storage.GetDatabase());
             result = GenerateNewKey(batch, internal);
             return true;
         }
@@ -1007,7 +1004,7 @@ bool CWallet::GetKeyFromPool(CPubKey& result, bool internal)
     return true;
 }
 
-bool CWallet::ReserveKeyFromKeyPool(int64_t& nIndex, CKeyPool& keypool, bool fRequestedInternal)
+bool LegacyScriptPubKeyMan::ReserveKeyFromKeyPool(int64_t& nIndex, CKeyPool& keypool, bool fRequestedInternal)
 {
     nIndex = -1;
     keypool.vchPubKey = CPubKey();
@@ -1017,7 +1014,7 @@ bool CWallet::ReserveKeyFromKeyPool(int64_t& nIndex, CKeyPool& keypool, bool fRe
         TopUpKeyPool();
 
         bool fReturningInternal = fRequestedInternal;
-        fReturningInternal &= (IsHDEnabled() && CanSupportFeature(FEATURE_HD_SPLIT)) || IsWalletFlagSet(WALLET_FLAG_DISABLE_PRIVATE_KEYS);
+        fReturningInternal &= (IsHDEnabled() && m_storage.CanSupportFeature(FEATURE_HD_SPLIT)) || m_storage.IsWalletFlagSet(WALLET_FLAG_DISABLE_PRIVATE_KEYS);
         bool use_split_keypool = set_pre_split_keypool.empty();
         std::set<int64_t>& setKeyPool = use_split_keypool ? (fReturningInternal ? setInternalKeyPool : setExternalKeyPool) : set_pre_split_keypool;
 
@@ -1026,7 +1023,7 @@ bool CWallet::ReserveKeyFromKeyPool(int64_t& nIndex, CKeyPool& keypool, bool fRe
             return false;
         }
 
-        WalletBatch batch(*database);
+        WalletBatch batch(m_storage.GetDatabase());
 
         auto it = setKeyPool.begin();
         nIndex = *it;
@@ -1053,7 +1050,7 @@ bool CWallet::ReserveKeyFromKeyPool(int64_t& nIndex, CKeyPool& keypool, bool fRe
     return true;
 }
 
-void CWallet::LearnRelatedScripts(const CPubKey& key, OutputType type)
+void LegacyScriptPubKeyMan::LearnRelatedScripts(const CPubKey& key, OutputType type)
 {
     if (key.IsCompressed() && (type == OutputType::P2SH_SEGWIT || type == OutputType::BECH32)) {
         CTxDestination witdest = WitnessV0KeyHash(key.GetID());
@@ -1064,13 +1061,13 @@ void CWallet::LearnRelatedScripts(const CPubKey& key, OutputType type)
     }
 }
 
-void CWallet::LearnAllRelatedScripts(const CPubKey& key)
+void LegacyScriptPubKeyMan::LearnAllRelatedScripts(const CPubKey& key)
 {
     // OutputType::P2SH_SEGWIT always adds all necessary scripts for all types.
     LearnRelatedScripts(key, OutputType::P2SH_SEGWIT);
 }
 
-void CWallet::MarkReserveKeysAsUsed(int64_t keypool_id)
+void LegacyScriptPubKeyMan::MarkReserveKeysAsUsed(int64_t keypool_id)
 {
     AssertLockHeld(cs_wallet);
     bool internal = setInternalKeyPool.count(keypool_id);
@@ -1078,7 +1075,7 @@ void CWallet::MarkReserveKeysAsUsed(int64_t keypool_id)
     std::set<int64_t> *setKeyPool = internal ? &setInternalKeyPool : (set_pre_split_keypool.empty() ? &setExternalKeyPool : &set_pre_split_keypool);
     auto it = setKeyPool->begin();
 
-    WalletBatch batch(*database);
+    WalletBatch batch(m_storage.GetDatabase());
     while (it != std::end(*setKeyPool)) {
         const int64_t& index = *(it);
         if (index > keypool_id) break; // set*KeyPool is ordered
@@ -1106,9 +1103,9 @@ std::vector<CKeyID> GetAffectedKeys(const CScript& spk, const SigningProvider& p
     return ret;
 }
 
-void CWallet::MarkPreSplitKeys()
+void LegacyScriptPubKeyMan::MarkPreSplitKeys()
 {
-    WalletBatch batch(*database);
+    WalletBatch batch(m_storage.GetDatabase());
     for (auto it = setExternalKeyPool.begin(); it != setExternalKeyPool.end();) {
         int64_t index = *it;
         CKeyPool keypool;
@@ -1124,24 +1121,24 @@ void CWallet::MarkPreSplitKeys()
     }
 }
 
-bool CWallet::AddCScript(const CScript& redeemScript)
+bool LegacyScriptPubKeyMan::AddCScript(const CScript& redeemScript)
 {
-    WalletBatch batch(*database);
+    WalletBatch batch(m_storage.GetDatabase());
     return AddCScriptWithDB(batch, redeemScript);
 }
 
-bool CWallet::AddCScriptWithDB(WalletBatch& batch, const CScript& redeemScript)
+bool LegacyScriptPubKeyMan::AddCScriptWithDB(WalletBatch& batch, const CScript& redeemScript)
 {
     if (!FillableSigningProvider::AddCScript(redeemScript))
         return false;
     if (batch.WriteCScript(Hash160(redeemScript), redeemScript)) {
-        UnsetWalletFlagWithDB(batch, WALLET_FLAG_BLANK_WALLET);
+        m_storage.UnsetWalletFlagWithDB(batch, WALLET_FLAG_BLANK_WALLET);
         return true;
     }
     return false;
 }
 
-bool CWallet::AddKeyOriginWithDB(WalletBatch& batch, const CPubKey& pubkey, const KeyOriginInfo& info)
+bool LegacyScriptPubKeyMan::AddKeyOriginWithDB(WalletBatch& batch, const CPubKey& pubkey, const KeyOriginInfo& info)
 {
     LOCK(cs_wallet);
     std::copy(info.fingerprint, info.fingerprint + 4, mapKeyMetadata[pubkey.GetID()].key_origin.fingerprint);
@@ -1151,9 +1148,9 @@ bool CWallet::AddKeyOriginWithDB(WalletBatch& batch, const CPubKey& pubkey, cons
     return batch.WriteKeyMetadata(mapKeyMetadata[pubkey.GetID()], pubkey, true);
 }
 
-bool CWallet::ImportScripts(const std::set<CScript> scripts, int64_t timestamp)
+bool LegacyScriptPubKeyMan::ImportScripts(const std::set<CScript> scripts, int64_t timestamp)
 {
-    WalletBatch batch(*database);
+    WalletBatch batch(m_storage.GetDatabase());
     for (const auto& entry : scripts) {
         CScriptID id(entry);
         if (HaveCScript(id)) {
@@ -1175,9 +1172,9 @@ bool CWallet::ImportScripts(const std::set<CScript> scripts, int64_t timestamp)
     return true;
 }
 
-bool CWallet::ImportPrivKeys(const std::map<CKeyID, CKey>& privkey_map, const int64_t timestamp)
+bool LegacyScriptPubKeyMan::ImportPrivKeys(const std::map<CKeyID, CKey>& privkey_map, const int64_t timestamp)
 {
-    WalletBatch batch(*database);
+    WalletBatch batch(m_storage.GetDatabase());
     for (const auto& entry : privkey_map) {
         const CKey& key = entry.second;
         CPubKey pubkey = key.GetPubKey();
@@ -1198,9 +1195,9 @@ bool CWallet::ImportPrivKeys(const std::map<CKeyID, CKey>& privkey_map, const in
     return true;
 }
 
-bool CWallet::ImportPubKeys(const std::vector<CKeyID>& ordered_pubkeys, const std::map<CKeyID, CPubKey>& pubkey_map, const std::map<CKeyID, std::pair<CPubKey, KeyOriginInfo>>& key_origins, const bool add_keypool, const bool internal, const int64_t timestamp)
+bool LegacyScriptPubKeyMan::ImportPubKeys(const std::vector<CKeyID>& ordered_pubkeys, const std::map<CKeyID, CPubKey>& pubkey_map, const std::map<CKeyID, std::pair<CPubKey, KeyOriginInfo>>& key_origins, const bool add_keypool, const bool internal, const int64_t timestamp)
 {
-    WalletBatch batch(*database);
+    WalletBatch batch(m_storage.GetDatabase());
     for (const auto& entry : key_origins) {
         AddKeyOriginWithDB(batch, entry.second.first, entry.second.second);
     }
@@ -1230,11 +1227,11 @@ bool CWallet::ImportPubKeys(const std::vector<CKeyID>& ordered_pubkeys, const st
     return true;
 }
 
-bool CWallet::ImportScriptPubKeys(const std::string& label, const std::set<CScript>& script_pub_keys, const bool have_solving_data, const bool apply_label, const int64_t timestamp)
+bool LegacyScriptPubKeyMan::ImportScriptPubKeys(const std::string& label, const std::set<CScript>& script_pub_keys, const bool have_solving_data, const bool apply_label, const int64_t timestamp)
 {
-    WalletBatch batch(*database);
+    WalletBatch batch(m_storage.GetDatabase());
     for (const CScript& script : script_pub_keys) {
-        if (!have_solving_data || !::IsMine(*this, script)) { // Always call AddWatchOnly for non-solvable watch-only, so that watch timestamp gets updated
+        if (!have_solving_data || !IsMine(script)) { // Always call AddWatchOnly for non-solvable watch-only, so that watch timestamp gets updated
             if (!AddWatchOnlyWithDB(batch, script, timestamp)) {
                 return false;
             }
@@ -1242,13 +1239,13 @@ bool CWallet::ImportScriptPubKeys(const std::string& label, const std::set<CScri
         CTxDestination dest;
         ExtractDestination(script, dest);
         if (apply_label && IsValidDestination(dest)) {
-            SetAddressBookWithDB(batch, dest, label, "receive");
+            m_wallet.SetAddressBookWithDB(batch, dest, label, "receive");
         }
     }
     return true;
 }
 
-std::set<CKeyID> CWallet::GetKeys() const
+std::set<CKeyID> LegacyScriptPubKeyMan::GetKeys() const
 {
     LOCK(cs_KeyStore);
     if (!IsCrypted()) {
@@ -1260,3 +1257,18 @@ std::set<CKeyID> CWallet::GetKeys() const
     }
     return set_address;
 }
+
+// Temporary CWallet accessors and aliases.
+LegacyScriptPubKeyMan::LegacyScriptPubKeyMan(CWallet& wallet)
+    : ScriptPubKeyMan(wallet),
+      m_wallet(wallet),
+      cs_wallet(wallet.cs_wallet),
+      vMasterKey(wallet.vMasterKey),
+      fUseCrypto(wallet.fUseCrypto),
+      fDecryptionThoroughlyChecked(wallet.fDecryptionThoroughlyChecked) {}
+
+bool LegacyScriptPubKeyMan::SetCrypted() { return m_wallet.SetCrypted(); }
+bool LegacyScriptPubKeyMan::IsCrypted() const { return m_wallet.IsCrypted(); }
+void LegacyScriptPubKeyMan::NotifyWatchonlyChanged(bool fHaveWatchOnly) const { return m_wallet.NotifyWatchonlyChanged(fHaveWatchOnly); }
+void LegacyScriptPubKeyMan::NotifyCanGetAddressesChanged() const { return m_wallet.NotifyCanGetAddressesChanged(); }
+template<typename... Params> void LegacyScriptPubKeyMan::WalletLogPrintf(const std::string& fmt, const Params&... parameters) const { return m_wallet.WalletLogPrintf(fmt, parameters...); }
diff --git a/src/wallet/scriptpubkeyman.h b/src/wallet/scriptpubkeyman.h
index f151cec444..55184098b7 100644
--- a/src/wallet/scriptpubkeyman.h
+++ b/src/wallet/scriptpubkeyman.h
@@ -16,6 +16,25 @@
 
 enum class OutputType;
 
+// Wallet storage things that ScriptPubKeyMans need in order to be able to store things to the wallet database.
+// It provides access to things that are part of the entire wallet and not specific to a ScriptPubKeyMan such as
+// wallet flags, wallet version, encryption keys, encryption status, and the database itself. This allows a
+// ScriptPubKeyMan to have callbacks into CWallet without causing a circular dependency.
+// WalletStorage should be the same for all ScriptPubKeyMans.
+class WalletStorage
+{
+public:
+    virtual ~WalletStorage() = default;
+    virtual const std::string GetDisplayName() const = 0;
+    virtual WalletDatabase& GetDatabase() = 0;
+    virtual bool IsWalletFlagSet(uint64_t) const = 0;
+    virtual void SetWalletFlag(uint64_t) = 0;
+    virtual void UnsetWalletFlagWithDB(WalletBatch&, uint64_t) = 0;
+    virtual bool CanSupportFeature(enum WalletFeature) const = 0;
+    virtual void SetMinVersion(enum WalletFeature, WalletBatch* = nullptr, bool = false) = 0;
+    virtual bool IsLocked() const = 0;
+};
+
 //! Default for -keypool
 static const unsigned int DEFAULT_KEYPOOL_SIZE = 1000;
 
@@ -112,4 +131,225 @@ public:
     }
 };
 
+/*
+ * A class implementing ScriptPubKeyMan manages some (or all) scriptPubKeys used in a wallet.
+ * It contains the scripts and keys related to the scriptPubKeys it manages.
+ * A ScriptPubKeyMan will be able to give out scriptPubKeys to be used, as well as marking
+ * when a scriptPubKey has been used. It also handles when and how to store a scriptPubKey
+ * and its related scripts and keys, including encryption.
+ */
+class ScriptPubKeyMan
+{
+protected:
+    WalletStorage& m_storage;
+
+public:
+    ScriptPubKeyMan(WalletStorage& storage) : m_storage(storage) {}
+};
+
+class LegacyScriptPubKeyMan : public ScriptPubKeyMan, public FillableSigningProvider
+{
+private:
+    using CryptedKeyMap = std::map<CKeyID, std::pair<CPubKey, std::vector<unsigned char>>>;
+    using WatchOnlySet = std::set<CScript>;
+    using WatchKeyMap = std::map<CKeyID, CPubKey>;
+
+    //! will encrypt previously unencrypted keys
+    bool EncryptKeys(CKeyingMaterial& vMasterKeyIn);
+
+    CryptedKeyMap mapCryptedKeys GUARDED_BY(cs_KeyStore);
+    WatchOnlySet setWatchOnly GUARDED_BY(cs_KeyStore);
+    WatchKeyMap mapWatchKeys GUARDED_BY(cs_KeyStore);
+
+    bool AddCryptedKeyInner(const CPubKey &vchPubKey, const std::vector<unsigned char> &vchCryptedSecret);
+    bool AddKeyPubKeyInner(const CKey& key, const CPubKey &pubkey);
+
+    WalletBatch *encrypted_batch GUARDED_BY(cs_wallet) = nullptr;
+
+    /* the HD chain data model (external chain counters) */
+    CHDChain hdChain;
+
+    /* HD derive new child key (on internal or external chain) */
+    void DeriveNewChildKey(WalletBatch& batch, CKeyMetadata& metadata, CKey& secret, bool internal = false) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
+
+    std::set<int64_t> setInternalKeyPool GUARDED_BY(cs_wallet);
+    std::set<int64_t> setExternalKeyPool GUARDED_BY(cs_wallet);
+    std::set<int64_t> set_pre_split_keypool GUARDED_BY(cs_wallet);
+    int64_t m_max_keypool_index GUARDED_BY(cs_wallet) = 0;
+    std::map<CKeyID, int64_t> m_pool_key_to_index;
+
+    int64_t nTimeFirstKey GUARDED_BY(cs_wallet) = 0;
+
+    /**
+     * Private version of AddWatchOnly method which does not accept a
+     * timestamp, and which will reset the wallet's nTimeFirstKey value to 1 if
+     * the watch key did not previously have a timestamp associated with it.
+     * Because this is an inherited virtual method, it is accessible despite
+     * being marked private, but it is marked private anyway to encourage use
+     * of the other AddWatchOnly which accepts a timestamp and sets
+     * nTimeFirstKey more intelligently for more efficient rescans.
+     */
+    bool AddWatchOnly(const CScript& dest) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
+    bool AddWatchOnlyWithDB(WalletBatch &batch, const CScript& dest) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
+    bool AddWatchOnlyInMem(const CScript &dest);
+
+    /** Add a KeyOriginInfo to the wallet */
+    bool AddKeyOriginWithDB(WalletBatch& batch, const CPubKey& pubkey, const KeyOriginInfo& info);
+
+    //! Adds a key to the store, and saves it to disk.
+    bool AddKeyPubKeyWithDB(WalletBatch &batch,const CKey& key, const CPubKey &pubkey) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
+
+    //! Adds a watch-only address to the store, and saves it to disk.
+    bool AddWatchOnlyWithDB(WalletBatch &batch, const CScript& dest, int64_t create_time) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
+
+    void AddKeypoolPubkeyWithDB(const CPubKey& pubkey, const bool internal, WalletBatch& batch);
+
+    //! Adds a script to the store and saves it to disk
+    bool AddCScriptWithDB(WalletBatch& batch, const CScript& script);
+
+ public:
+    //! Fetches a key from the keypool
+    bool GetKeyFromPool(CPubKey &key, bool internal = false);
+    void LoadKeyPool(int64_t nIndex, const CKeyPool &keypool) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
+    void MarkPreSplitKeys() EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
+
+    // Map from Key ID to key metadata.
+    std::map<CKeyID, CKeyMetadata> mapKeyMetadata GUARDED_BY(cs_wallet);
+
+    // Map from Script ID to key metadata (for watch-only keys).
+    std::map<CScriptID, CKeyMetadata> m_script_metadata GUARDED_BY(cs_wallet);
+
+    /**
+     * keystore implementation
+     * Generate a new key
+     */
+    CPubKey GenerateNewKey(WalletBatch& batch, bool internal = false) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
+    //! Adds a key to the store, and saves it to disk.
+    bool AddKeyPubKey(const CKey& key, const CPubKey &pubkey) override EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
+    //! Adds a key to the store, without saving it to disk (used by LoadWallet)
+    bool LoadKey(const CKey& key, const CPubKey &pubkey) { return AddKeyPubKeyInner(key, pubkey); }
+    //! Load metadata (used by LoadWallet)
+    void LoadKeyMetadata(const CKeyID& keyID, const CKeyMetadata &metadata) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
+    void LoadScriptMetadata(const CScriptID& script_id, const CKeyMetadata &metadata) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
+    //! Upgrade stored CKeyMetadata objects to store key origin info as KeyOriginInfo
+    void UpgradeKeyMetadata() EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
+    void UpdateTimeFirstKey(int64_t nCreateTime) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
+
+    //! Adds an encrypted key to the store, and saves it to disk.
+    bool AddCryptedKey(const CPubKey &vchPubKey, const std::vector<unsigned char> &vchCryptedSecret);
+    //! Adds an encrypted key to the store, without saving it to disk (used by LoadWallet)
+    bool LoadCryptedKey(const CPubKey &vchPubKey, const std::vector<unsigned char> &vchCryptedSecret);
+    bool GetKey(const CKeyID &address, CKey& keyOut) const override;
+    bool GetPubKey(const CKeyID &address, CPubKey& vchPubKeyOut) const override;
+    bool HaveKey(const CKeyID &address) const override;
+    std::set<CKeyID> GetKeys() const override;
+    bool AddCScript(const CScript& redeemScript) override;
+    bool LoadCScript(const CScript& redeemScript);
+
+    //! Adds a watch-only address to the store, and saves it to disk.
+    bool AddWatchOnly(const CScript& dest, int64_t nCreateTime) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
+    bool RemoveWatchOnly(const CScript &dest) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
+    //! Adds a watch-only address to the store, without saving it to disk (used by LoadWallet)
+    bool LoadWatchOnly(const CScript &dest);
+    //! Returns whether the watch-only script is in the wallet
+    bool HaveWatchOnly(const CScript &dest) const;
+    //! Returns whether there are any watch-only things in the wallet
+    bool HaveWatchOnly() const;
+    //! Fetches a pubkey from mapWatchKeys if it exists there
+    bool GetWatchPubKey(const CKeyID &address, CPubKey &pubkey_out) const;
+
+    bool ImportScripts(const std::set<CScript> scripts, int64_t timestamp) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
+    bool ImportPrivKeys(const std::map<CKeyID, CKey>& privkey_map, const int64_t timestamp) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
+    bool ImportPubKeys(const std::vector<CKeyID>& ordered_pubkeys, const std::map<CKeyID, CPubKey>& pubkey_map, const std::map<CKeyID, std::pair<CPubKey, KeyOriginInfo>>& key_origins, const bool add_keypool, const bool internal, const int64_t timestamp) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
+    bool ImportScriptPubKeys(const std::string& label, const std::set<CScript>& script_pub_keys, const bool have_solving_data, const bool apply_label, const int64_t timestamp) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
+
+    bool NewKeyPool();
+    size_t KeypoolCountExternalKeys() EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
+    bool TopUpKeyPool(unsigned int kpSize = 0);
+
+    /**
+     * Reserves a key from the keypool and sets nIndex to its index
+     *
+     * @param[out] nIndex the index of the key in keypool
+     * @param[out] keypool the keypool the key was drawn from, which could be the
+     *     the pre-split pool if present, or the internal or external pool
+     * @param fRequestedInternal true if the caller would like the key drawn
+     *     from the internal keypool, false if external is preferred
+     *
+     * @return true if succeeded, false if failed due to empty keypool
+     * @throws std::runtime_error if keypool read failed, key was invalid,
+     *     was not found in the wallet, or was misclassified in the internal
+     *     or external keypool
+     */
+    bool ReserveKeyFromKeyPool(int64_t& nIndex, CKeyPool& keypool, bool fRequestedInternal);
+    void KeepKey(int64_t nIndex);
+    void ReturnKey(int64_t nIndex, bool fInternal, const CPubKey& pubkey);
+    int64_t GetOldestKeyPoolTime();
+    /**
+     * Marks all keys in the keypool up to and including reserve_key as used.
+     */
+    void MarkReserveKeysAsUsed(int64_t keypool_id) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
+    const std::map<CKeyID, int64_t>& GetAllReserveKeys() const { return m_pool_key_to_index; }
+    bool GetNewDestination(const OutputType type, const std::string label, CTxDestination& dest, std::string& error);
+
+    isminetype IsMine(const CScript& script) const;
+
+    /* Set the HD chain model (chain child index counters) */
+    void SetHDChain(const CHDChain& chain, bool memonly);
+    const CHDChain& GetHDChain() const { return hdChain; }
+
+    /* Returns true if HD is enabled */
+    bool IsHDEnabled() const;
+
+    /* Returns true if the wallet can generate new keys */
+    bool CanGenerateKeys();
+
+    /* Returns true if the wallet can give out new addresses. This means it has keys in the keypool or can generate new keys */
+    bool CanGetAddresses(bool internal = false);
+
+    /* Generates a new HD seed (will not be activated) */
+    CPubKey GenerateNewSeed();
+
+    /* Derives a new HD seed (will not be activated) */
+    CPubKey DeriveNewSeed(const CKey& key);
+
+    /* Set the current HD seed (will reset the chain child index counters)
+       Sets the seed's version based on the current wallet version (so the
+       caller must ensure the current wallet version is correct before calling
+       this function). */
+    void SetHDSeed(const CPubKey& key);
+
+    /**
+     * Explicitly make the wallet learn the related scripts for outputs to the
+     * given key. This is purely to make the wallet file compatible with older
+     * software, as FillableSigningProvider automatically does this implicitly for all
+     * keys now.
+     */
+    void LearnRelatedScripts(const CPubKey& key, OutputType);
+
+    /**
+     * Same as LearnRelatedScripts, but when the OutputType is not known (and could
+     * be anything).
+     */
+    void LearnAllRelatedScripts(const CPubKey& key);
+
+    /** Implement lookup of key origin information through wallet key metadata. */
+    bool GetKeyOrigin(const CKeyID& keyid, KeyOriginInfo& info) const override;
+
+    // Temporary CWallet accessors and aliases.
+    friend class CWallet;
+    friend class ReserveDestination;
+    LegacyScriptPubKeyMan(CWallet& wallet);
+    bool SetCrypted();
+    bool IsCrypted() const;
+    void NotifyWatchonlyChanged(bool fHaveWatchOnly) const;
+    void NotifyCanGetAddressesChanged() const;
+    template<typename... Params> void WalletLogPrintf(const std::string& fmt, const Params&... parameters) const;
+    CWallet& m_wallet;
+    CCriticalSection& cs_wallet;
+    CKeyingMaterial& vMasterKey GUARDED_BY(cs_KeyStore);
+    std::atomic<bool>& fUseCrypto;
+    bool& fDecryptionThoroughlyChecked;
+};
+
 #endif // BITCOIN_WALLET_SCRIPTPUBKEYMAN_H
diff --git a/src/wallet/test/ismine_tests.cpp b/src/wallet/test/ismine_tests.cpp
index 062fef7748..12355e300a 100644
--- a/src/wallet/test/ismine_tests.cpp
+++ b/src/wallet/test/ismine_tests.cpp
@@ -38,12 +38,12 @@ BOOST_AUTO_TEST_CASE(ismine_standard)
         scriptPubKey = GetScriptForRawPubKey(pubkeys[0]);
 
         // Keystore does not have key
-        result = IsMine(keystore, scriptPubKey);
+        result = keystore.GetLegacyScriptPubKeyMan()->IsMine(scriptPubKey);
         BOOST_CHECK_EQUAL(result, ISMINE_NO);
 
         // Keystore has key
-        BOOST_CHECK(keystore.AddKey(keys[0]));
-        result = IsMine(keystore, scriptPubKey);
+        BOOST_CHECK(keystore.GetLegacyScriptPubKeyMan()->AddKey(keys[0]));
+        result = keystore.GetLegacyScriptPubKeyMan()->IsMine(scriptPubKey);
         BOOST_CHECK_EQUAL(result, ISMINE_SPENDABLE);
     }
 
@@ -54,12 +54,12 @@ BOOST_AUTO_TEST_CASE(ismine_standard)
         scriptPubKey = GetScriptForRawPubKey(uncompressedPubkey);
 
         // Keystore does not have key
-        result = IsMine(keystore, scriptPubKey);
+        result = keystore.GetLegacyScriptPubKeyMan()->IsMine(scriptPubKey);
         BOOST_CHECK_EQUAL(result, ISMINE_NO);
 
         // Keystore has key
-        BOOST_CHECK(keystore.AddKey(uncompressedKey));
-        result = IsMine(keystore, scriptPubKey);
+        BOOST_CHECK(keystore.GetLegacyScriptPubKeyMan()->AddKey(uncompressedKey));
+        result = keystore.GetLegacyScriptPubKeyMan()->IsMine(scriptPubKey);
         BOOST_CHECK_EQUAL(result, ISMINE_SPENDABLE);
     }
 
@@ -70,12 +70,12 @@ BOOST_AUTO_TEST_CASE(ismine_standard)
         scriptPubKey = GetScriptForDestination(PKHash(pubkeys[0]));
 
         // Keystore does not have key
-        result = IsMine(keystore, scriptPubKey);
+        result = keystore.GetLegacyScriptPubKeyMan()->IsMine(scriptPubKey);
         BOOST_CHECK_EQUAL(result, ISMINE_NO);
 
         // Keystore has key
-        BOOST_CHECK(keystore.AddKey(keys[0]));
-        result = IsMine(keystore, scriptPubKey);
+        BOOST_CHECK(keystore.GetLegacyScriptPubKeyMan()->AddKey(keys[0]));
+        result = keystore.GetLegacyScriptPubKeyMan()->IsMine(scriptPubKey);
         BOOST_CHECK_EQUAL(result, ISMINE_SPENDABLE);
     }
 
@@ -86,12 +86,12 @@ BOOST_AUTO_TEST_CASE(ismine_standard)
         scriptPubKey = GetScriptForDestination(PKHash(uncompressedPubkey));
 
         // Keystore does not have key
-        result = IsMine(keystore, scriptPubKey);
+        result = keystore.GetLegacyScriptPubKeyMan()->IsMine(scriptPubKey);
         BOOST_CHECK_EQUAL(result, ISMINE_NO);
 
         // Keystore has key
-        BOOST_CHECK(keystore.AddKey(uncompressedKey));
-        result = IsMine(keystore, scriptPubKey);
+        BOOST_CHECK(keystore.GetLegacyScriptPubKeyMan()->AddKey(uncompressedKey));
+        result = keystore.GetLegacyScriptPubKeyMan()->IsMine(scriptPubKey);
         BOOST_CHECK_EQUAL(result, ISMINE_SPENDABLE);
     }
 
@@ -104,17 +104,17 @@ BOOST_AUTO_TEST_CASE(ismine_standard)
         scriptPubKey = GetScriptForDestination(ScriptHash(redeemScript));
 
         // Keystore does not have redeemScript or key
-        result = IsMine(keystore, scriptPubKey);
+        result = keystore.GetLegacyScriptPubKeyMan()->IsMine(scriptPubKey);
         BOOST_CHECK_EQUAL(result, ISMINE_NO);
 
         // Keystore has redeemScript but no key
-        BOOST_CHECK(keystore.AddCScript(redeemScript));
-        result = IsMine(keystore, scriptPubKey);
+        BOOST_CHECK(keystore.GetLegacyScriptPubKeyMan()->AddCScript(redeemScript));
+        result = keystore.GetLegacyScriptPubKeyMan()->IsMine(scriptPubKey);
         BOOST_CHECK_EQUAL(result, ISMINE_NO);
 
         // Keystore has redeemScript and key
-        BOOST_CHECK(keystore.AddKey(keys[0]));
-        result = IsMine(keystore, scriptPubKey);
+        BOOST_CHECK(keystore.GetLegacyScriptPubKeyMan()->AddKey(keys[0]));
+        result = keystore.GetLegacyScriptPubKeyMan()->IsMine(scriptPubKey);
         BOOST_CHECK_EQUAL(result, ISMINE_SPENDABLE);
     }
 
@@ -127,11 +127,11 @@ BOOST_AUTO_TEST_CASE(ismine_standard)
         CScript redeemscript = GetScriptForDestination(ScriptHash(redeemscript_inner));
         scriptPubKey = GetScriptForDestination(ScriptHash(redeemscript));
 
-        BOOST_CHECK(keystore.AddCScript(redeemscript));
-        BOOST_CHECK(keystore.AddCScript(redeemscript_inner));
-        BOOST_CHECK(keystore.AddCScript(scriptPubKey));
-        BOOST_CHECK(keystore.AddKey(keys[0]));
-        result = IsMine(keystore, scriptPubKey);
+        BOOST_CHECK(keystore.GetLegacyScriptPubKeyMan()->AddCScript(redeemscript));
+        BOOST_CHECK(keystore.GetLegacyScriptPubKeyMan()->AddCScript(redeemscript_inner));
+        BOOST_CHECK(keystore.GetLegacyScriptPubKeyMan()->AddCScript(scriptPubKey));
+        BOOST_CHECK(keystore.GetLegacyScriptPubKeyMan()->AddKey(keys[0]));
+        result = keystore.GetLegacyScriptPubKeyMan()->IsMine(scriptPubKey);
         BOOST_CHECK_EQUAL(result, ISMINE_NO);
     }
 
@@ -144,11 +144,11 @@ BOOST_AUTO_TEST_CASE(ismine_standard)
         CScript witnessscript = GetScriptForDestination(ScriptHash(redeemscript));
         scriptPubKey = GetScriptForDestination(WitnessV0ScriptHash(witnessscript));
 
-        BOOST_CHECK(keystore.AddCScript(witnessscript));
-        BOOST_CHECK(keystore.AddCScript(redeemscript));
-        BOOST_CHECK(keystore.AddCScript(scriptPubKey));
-        BOOST_CHECK(keystore.AddKey(keys[0]));
-        result = IsMine(keystore, scriptPubKey);
+        BOOST_CHECK(keystore.GetLegacyScriptPubKeyMan()->AddCScript(witnessscript));
+        BOOST_CHECK(keystore.GetLegacyScriptPubKeyMan()->AddCScript(redeemscript));
+        BOOST_CHECK(keystore.GetLegacyScriptPubKeyMan()->AddCScript(scriptPubKey));
+        BOOST_CHECK(keystore.GetLegacyScriptPubKeyMan()->AddKey(keys[0]));
+        result = keystore.GetLegacyScriptPubKeyMan()->IsMine(scriptPubKey);
         BOOST_CHECK_EQUAL(result, ISMINE_NO);
     }
 
@@ -160,10 +160,10 @@ BOOST_AUTO_TEST_CASE(ismine_standard)
         CScript witnessscript = GetScriptForDestination(WitnessV0KeyHash(PKHash(pubkeys[0])));
         scriptPubKey = GetScriptForDestination(WitnessV0ScriptHash(witnessscript));
 
-        BOOST_CHECK(keystore.AddCScript(witnessscript));
-        BOOST_CHECK(keystore.AddCScript(scriptPubKey));
-        BOOST_CHECK(keystore.AddKey(keys[0]));
-        result = IsMine(keystore, scriptPubKey);
+        BOOST_CHECK(keystore.GetLegacyScriptPubKeyMan()->AddCScript(witnessscript));
+        BOOST_CHECK(keystore.GetLegacyScriptPubKeyMan()->AddCScript(scriptPubKey));
+        BOOST_CHECK(keystore.GetLegacyScriptPubKeyMan()->AddKey(keys[0]));
+        result = keystore.GetLegacyScriptPubKeyMan()->IsMine(scriptPubKey);
         BOOST_CHECK_EQUAL(result, ISMINE_NO);
     }
 
@@ -176,11 +176,11 @@ BOOST_AUTO_TEST_CASE(ismine_standard)
         CScript witnessscript = GetScriptForDestination(WitnessV0ScriptHash(witnessscript_inner));
         scriptPubKey = GetScriptForDestination(WitnessV0ScriptHash(witnessscript));
 
-        BOOST_CHECK(keystore.AddCScript(witnessscript_inner));
-        BOOST_CHECK(keystore.AddCScript(witnessscript));
-        BOOST_CHECK(keystore.AddCScript(scriptPubKey));
-        BOOST_CHECK(keystore.AddKey(keys[0]));
-        result = IsMine(keystore, scriptPubKey);
+        BOOST_CHECK(keystore.GetLegacyScriptPubKeyMan()->AddCScript(witnessscript_inner));
+        BOOST_CHECK(keystore.GetLegacyScriptPubKeyMan()->AddCScript(witnessscript));
+        BOOST_CHECK(keystore.GetLegacyScriptPubKeyMan()->AddCScript(scriptPubKey));
+        BOOST_CHECK(keystore.GetLegacyScriptPubKeyMan()->AddKey(keys[0]));
+        result = keystore.GetLegacyScriptPubKeyMan()->IsMine(scriptPubKey);
         BOOST_CHECK_EQUAL(result, ISMINE_NO);
     }
 
@@ -188,13 +188,13 @@ BOOST_AUTO_TEST_CASE(ismine_standard)
     {
         CWallet keystore(chain.get(), WalletLocation(), WalletDatabase::CreateDummy());
         LOCK(keystore.cs_wallet);
-        BOOST_CHECK(keystore.AddKey(keys[0]));
+        BOOST_CHECK(keystore.GetLegacyScriptPubKeyMan()->AddKey(keys[0]));
 
         scriptPubKey = GetScriptForDestination(WitnessV0KeyHash(PKHash(pubkeys[0])));
 
         // Keystore implicitly has key and P2SH redeemScript
-        BOOST_CHECK(keystore.AddCScript(scriptPubKey));
-        result = IsMine(keystore, scriptPubKey);
+        BOOST_CHECK(keystore.GetLegacyScriptPubKeyMan()->AddCScript(scriptPubKey));
+        result = keystore.GetLegacyScriptPubKeyMan()->IsMine(scriptPubKey);
         BOOST_CHECK_EQUAL(result, ISMINE_SPENDABLE);
     }
 
@@ -202,17 +202,17 @@ BOOST_AUTO_TEST_CASE(ismine_standard)
     {
         CWallet keystore(chain.get(), WalletLocation(), WalletDatabase::CreateDummy());
         LOCK(keystore.cs_wallet);
-        BOOST_CHECK(keystore.AddKey(uncompressedKey));
+        BOOST_CHECK(keystore.GetLegacyScriptPubKeyMan()->AddKey(uncompressedKey));
 
         scriptPubKey = GetScriptForDestination(WitnessV0KeyHash(PKHash(uncompressedPubkey)));
 
         // Keystore has key, but no P2SH redeemScript
-        result = IsMine(keystore, scriptPubKey);
+        result = keystore.GetLegacyScriptPubKeyMan()->IsMine(scriptPubKey);
         BOOST_CHECK_EQUAL(result, ISMINE_NO);
 
         // Keystore has key and P2SH redeemScript
-        BOOST_CHECK(keystore.AddCScript(scriptPubKey));
-        result = IsMine(keystore, scriptPubKey);
+        BOOST_CHECK(keystore.GetLegacyScriptPubKeyMan()->AddCScript(scriptPubKey));
+        result = keystore.GetLegacyScriptPubKeyMan()->IsMine(scriptPubKey);
         BOOST_CHECK_EQUAL(result, ISMINE_NO);
     }
 
@@ -224,25 +224,25 @@ BOOST_AUTO_TEST_CASE(ismine_standard)
         scriptPubKey = GetScriptForMultisig(2, {uncompressedPubkey, pubkeys[1]});
 
         // Keystore does not have any keys
-        result = IsMine(keystore, scriptPubKey);
+        result = keystore.GetLegacyScriptPubKeyMan()->IsMine(scriptPubKey);
         BOOST_CHECK_EQUAL(result, ISMINE_NO);
 
         // Keystore has 1/2 keys
-        BOOST_CHECK(keystore.AddKey(uncompressedKey));
+        BOOST_CHECK(keystore.GetLegacyScriptPubKeyMan()->AddKey(uncompressedKey));
 
-        result = IsMine(keystore, scriptPubKey);
+        result = keystore.GetLegacyScriptPubKeyMan()->IsMine(scriptPubKey);
         BOOST_CHECK_EQUAL(result, ISMINE_NO);
 
         // Keystore has 2/2 keys
-        BOOST_CHECK(keystore.AddKey(keys[1]));
+        BOOST_CHECK(keystore.GetLegacyScriptPubKeyMan()->AddKey(keys[1]));
 
-        result = IsMine(keystore, scriptPubKey);
+        result = keystore.GetLegacyScriptPubKeyMan()->IsMine(scriptPubKey);
         BOOST_CHECK_EQUAL(result, ISMINE_NO);
 
         // Keystore has 2/2 keys and the script
-        BOOST_CHECK(keystore.AddCScript(scriptPubKey));
+        BOOST_CHECK(keystore.GetLegacyScriptPubKeyMan()->AddCScript(scriptPubKey));
 
-        result = IsMine(keystore, scriptPubKey);
+        result = keystore.GetLegacyScriptPubKeyMan()->IsMine(scriptPubKey);
         BOOST_CHECK_EQUAL(result, ISMINE_NO);
     }
 
@@ -250,19 +250,19 @@ BOOST_AUTO_TEST_CASE(ismine_standard)
     {
         CWallet keystore(chain.get(), WalletLocation(), WalletDatabase::CreateDummy());
         LOCK(keystore.cs_wallet);
-        BOOST_CHECK(keystore.AddKey(uncompressedKey));
-        BOOST_CHECK(keystore.AddKey(keys[1]));
+        BOOST_CHECK(keystore.GetLegacyScriptPubKeyMan()->AddKey(uncompressedKey));
+        BOOST_CHECK(keystore.GetLegacyScriptPubKeyMan()->AddKey(keys[1]));
 
         CScript redeemScript = GetScriptForMultisig(2, {uncompressedPubkey, pubkeys[1]});
         scriptPubKey = GetScriptForDestination(ScriptHash(redeemScript));
 
         // Keystore has no redeemScript
-        result = IsMine(keystore, scriptPubKey);
+        result = keystore.GetLegacyScriptPubKeyMan()->IsMine(scriptPubKey);
         BOOST_CHECK_EQUAL(result, ISMINE_NO);
 
         // Keystore has redeemScript
-        BOOST_CHECK(keystore.AddCScript(redeemScript));
-        result = IsMine(keystore, scriptPubKey);
+        BOOST_CHECK(keystore.GetLegacyScriptPubKeyMan()->AddCScript(redeemScript));
+        result = keystore.GetLegacyScriptPubKeyMan()->IsMine(scriptPubKey);
         BOOST_CHECK_EQUAL(result, ISMINE_SPENDABLE);
     }
 
@@ -270,24 +270,24 @@ BOOST_AUTO_TEST_CASE(ismine_standard)
     {
         CWallet keystore(chain.get(), WalletLocation(), WalletDatabase::CreateDummy());
         LOCK(keystore.cs_wallet);
-        BOOST_CHECK(keystore.AddKey(keys[0]));
-        BOOST_CHECK(keystore.AddKey(keys[1]));
+        BOOST_CHECK(keystore.GetLegacyScriptPubKeyMan()->AddKey(keys[0]));
+        BOOST_CHECK(keystore.GetLegacyScriptPubKeyMan()->AddKey(keys[1]));
 
         CScript witnessScript = GetScriptForMultisig(2, {pubkeys[0], pubkeys[1]});
         scriptPubKey = GetScriptForDestination(WitnessV0ScriptHash(witnessScript));
 
         // Keystore has keys, but no witnessScript or P2SH redeemScript
-        result = IsMine(keystore, scriptPubKey);
+        result = keystore.GetLegacyScriptPubKeyMan()->IsMine(scriptPubKey);
         BOOST_CHECK_EQUAL(result, ISMINE_NO);
 
         // Keystore has keys and witnessScript, but no P2SH redeemScript
-        BOOST_CHECK(keystore.AddCScript(witnessScript));
-        result = IsMine(keystore, scriptPubKey);
+        BOOST_CHECK(keystore.GetLegacyScriptPubKeyMan()->AddCScript(witnessScript));
+        result = keystore.GetLegacyScriptPubKeyMan()->IsMine(scriptPubKey);
         BOOST_CHECK_EQUAL(result, ISMINE_NO);
 
         // Keystore has keys, witnessScript, P2SH redeemScript
-        BOOST_CHECK(keystore.AddCScript(scriptPubKey));
-        result = IsMine(keystore, scriptPubKey);
+        BOOST_CHECK(keystore.GetLegacyScriptPubKeyMan()->AddCScript(scriptPubKey));
+        result = keystore.GetLegacyScriptPubKeyMan()->IsMine(scriptPubKey);
         BOOST_CHECK_EQUAL(result, ISMINE_SPENDABLE);
     }
 
@@ -295,24 +295,24 @@ BOOST_AUTO_TEST_CASE(ismine_standard)
     {
         CWallet keystore(chain.get(), WalletLocation(), WalletDatabase::CreateDummy());
         LOCK(keystore.cs_wallet);
-        BOOST_CHECK(keystore.AddKey(uncompressedKey));
-        BOOST_CHECK(keystore.AddKey(keys[1]));
+        BOOST_CHECK(keystore.GetLegacyScriptPubKeyMan()->AddKey(uncompressedKey));
+        BOOST_CHECK(keystore.GetLegacyScriptPubKeyMan()->AddKey(keys[1]));
 
         CScript witnessScript = GetScriptForMultisig(2, {uncompressedPubkey, pubkeys[1]});
         scriptPubKey = GetScriptForDestination(WitnessV0ScriptHash(witnessScript));
 
         // Keystore has keys, but no witnessScript or P2SH redeemScript
-        result = IsMine(keystore, scriptPubKey);
+        result = keystore.GetLegacyScriptPubKeyMan()->IsMine(scriptPubKey);
         BOOST_CHECK_EQUAL(result, ISMINE_NO);
 
         // Keystore has keys and witnessScript, but no P2SH redeemScript
-        BOOST_CHECK(keystore.AddCScript(witnessScript));
-        result = IsMine(keystore, scriptPubKey);
+        BOOST_CHECK(keystore.GetLegacyScriptPubKeyMan()->AddCScript(witnessScript));
+        result = keystore.GetLegacyScriptPubKeyMan()->IsMine(scriptPubKey);
         BOOST_CHECK_EQUAL(result, ISMINE_NO);
 
         // Keystore has keys, witnessScript, P2SH redeemScript
-        BOOST_CHECK(keystore.AddCScript(scriptPubKey));
-        result = IsMine(keystore, scriptPubKey);
+        BOOST_CHECK(keystore.GetLegacyScriptPubKeyMan()->AddCScript(scriptPubKey));
+        result = keystore.GetLegacyScriptPubKeyMan()->IsMine(scriptPubKey);
         BOOST_CHECK_EQUAL(result, ISMINE_NO);
     }
 
@@ -326,19 +326,19 @@ BOOST_AUTO_TEST_CASE(ismine_standard)
         scriptPubKey = GetScriptForDestination(ScriptHash(redeemScript));
 
         // Keystore has no witnessScript, P2SH redeemScript, or keys
-        result = IsMine(keystore, scriptPubKey);
+        result = keystore.GetLegacyScriptPubKeyMan()->IsMine(scriptPubKey);
         BOOST_CHECK_EQUAL(result, ISMINE_NO);
 
         // Keystore has witnessScript and P2SH redeemScript, but no keys
-        BOOST_CHECK(keystore.AddCScript(redeemScript));
-        BOOST_CHECK(keystore.AddCScript(witnessScript));
-        result = IsMine(keystore, scriptPubKey);
+        BOOST_CHECK(keystore.GetLegacyScriptPubKeyMan()->AddCScript(redeemScript));
+        BOOST_CHECK(keystore.GetLegacyScriptPubKeyMan()->AddCScript(witnessScript));
+        result = keystore.GetLegacyScriptPubKeyMan()->IsMine(scriptPubKey);
         BOOST_CHECK_EQUAL(result, ISMINE_NO);
 
         // Keystore has keys, witnessScript, P2SH redeemScript
-        BOOST_CHECK(keystore.AddKey(keys[0]));
-        BOOST_CHECK(keystore.AddKey(keys[1]));
-        result = IsMine(keystore, scriptPubKey);
+        BOOST_CHECK(keystore.GetLegacyScriptPubKeyMan()->AddKey(keys[0]));
+        BOOST_CHECK(keystore.GetLegacyScriptPubKeyMan()->AddKey(keys[1]));
+        result = keystore.GetLegacyScriptPubKeyMan()->IsMine(scriptPubKey);
         BOOST_CHECK_EQUAL(result, ISMINE_SPENDABLE);
     }
 
@@ -346,12 +346,12 @@ BOOST_AUTO_TEST_CASE(ismine_standard)
     {
         CWallet keystore(chain.get(), WalletLocation(), WalletDatabase::CreateDummy());
         LOCK(keystore.cs_wallet);
-        BOOST_CHECK(keystore.AddKey(keys[0]));
+        BOOST_CHECK(keystore.GetLegacyScriptPubKeyMan()->AddKey(keys[0]));
 
         scriptPubKey.clear();
         scriptPubKey << OP_RETURN << ToByteVector(pubkeys[0]);
 
-        result = IsMine(keystore, scriptPubKey);
+        result = keystore.GetLegacyScriptPubKeyMan()->IsMine(scriptPubKey);
         BOOST_CHECK_EQUAL(result, ISMINE_NO);
     }
 
@@ -359,12 +359,12 @@ BOOST_AUTO_TEST_CASE(ismine_standard)
     {
         CWallet keystore(chain.get(), WalletLocation(), WalletDatabase::CreateDummy());
         LOCK(keystore.cs_wallet);
-        BOOST_CHECK(keystore.AddKey(keys[0]));
+        BOOST_CHECK(keystore.GetLegacyScriptPubKeyMan()->AddKey(keys[0]));
 
         scriptPubKey.clear();
         scriptPubKey << OP_0 << ToByteVector(ParseHex("aabb"));
 
-        result = IsMine(keystore, scriptPubKey);
+        result = keystore.GetLegacyScriptPubKeyMan()->IsMine(scriptPubKey);
         BOOST_CHECK_EQUAL(result, ISMINE_NO);
     }
 
@@ -372,12 +372,12 @@ BOOST_AUTO_TEST_CASE(ismine_standard)
     {
         CWallet keystore(chain.get(), WalletLocation(), WalletDatabase::CreateDummy());
         LOCK(keystore.cs_wallet);
-        BOOST_CHECK(keystore.AddKey(keys[0]));
+        BOOST_CHECK(keystore.GetLegacyScriptPubKeyMan()->AddKey(keys[0]));
 
         scriptPubKey.clear();
         scriptPubKey << OP_16 << ToByteVector(ParseHex("aabb"));
 
-        result = IsMine(keystore, scriptPubKey);
+        result = keystore.GetLegacyScriptPubKeyMan()->IsMine(scriptPubKey);
         BOOST_CHECK_EQUAL(result, ISMINE_NO);
     }
 
@@ -385,12 +385,12 @@ BOOST_AUTO_TEST_CASE(ismine_standard)
     {
         CWallet keystore(chain.get(), WalletLocation(), WalletDatabase::CreateDummy());
         LOCK(keystore.cs_wallet);
-        BOOST_CHECK(keystore.AddKey(keys[0]));
+        BOOST_CHECK(keystore.GetLegacyScriptPubKeyMan()->AddKey(keys[0]));
 
         scriptPubKey.clear();
         scriptPubKey << OP_9 << OP_ADD << OP_11 << OP_EQUAL;
 
-        result = IsMine(keystore, scriptPubKey);
+        result = keystore.GetLegacyScriptPubKeyMan()->IsMine(scriptPubKey);
         BOOST_CHECK_EQUAL(result, ISMINE_NO);
     }
 }
diff --git a/src/wallet/test/psbt_wallet_tests.cpp b/src/wallet/test/psbt_wallet_tests.cpp
index 0400f1207c..27a64ff12f 100644
--- a/src/wallet/test/psbt_wallet_tests.cpp
+++ b/src/wallet/test/psbt_wallet_tests.cpp
@@ -16,6 +16,7 @@ BOOST_FIXTURE_TEST_SUITE(psbt_wallet_tests, WalletTestingSetup)
 
 BOOST_AUTO_TEST_CASE(psbt_updater_test)
 {
+    auto spk_man = m_wallet.GetLegacyScriptPubKeyMan();
     LOCK(m_wallet.cs_wallet);
 
     // Create prevtxs and add to wallet
@@ -35,23 +36,23 @@ BOOST_AUTO_TEST_CASE(psbt_updater_test)
     CScript rs1;
     CDataStream s_rs1(ParseHex("475221029583bf39ae0a609747ad199addd634fa6108559d6c5cd39b4c2183f1ab96e07f2102dab61ff49a14db6a7d02b0cd1fbb78fc4b18312b5b4e54dae4dba2fbfef536d752ae"), SER_NETWORK, PROTOCOL_VERSION);
     s_rs1 >> rs1;
-    m_wallet.AddCScript(rs1);
+    spk_man->AddCScript(rs1);
 
     CScript rs2;
     CDataStream s_rs2(ParseHex("2200208c2353173743b595dfb4a07b72ba8e42e3797da74e87fe7d9d7497e3b2028903"), SER_NETWORK, PROTOCOL_VERSION);
     s_rs2 >> rs2;
-    m_wallet.AddCScript(rs2);
+    spk_man->AddCScript(rs2);
 
     CScript ws1;
     CDataStream s_ws1(ParseHex("47522103089dc10c7ac6db54f91329af617333db388cead0c231f723379d1b99030b02dc21023add904f3d6dcf59ddb906b0dee23529b7ffb9ed50e5e86151926860221f0e7352ae"), SER_NETWORK, PROTOCOL_VERSION);
     s_ws1 >> ws1;
-    m_wallet.AddCScript(ws1);
+    spk_man->AddCScript(ws1);
 
     // Add hd seed
     CKey key = DecodeSecret("5KSSJQ7UNfFGwVgpCZDSHm5rVNhMFcFtvWM3zQ8mW4qNDEN7LFd"); // Mainnet and uncompressed form of cUkG8i1RFfWGWy5ziR11zJ5V4U4W3viSFCfyJmZnvQaUsd1xuF3T
-    CPubKey master_pub_key = m_wallet.DeriveNewSeed(key);
-    m_wallet.SetHDSeed(master_pub_key);
-    m_wallet.NewKeyPool();
+    CPubKey master_pub_key = spk_man->DeriveNewSeed(key);
+    spk_man->SetHDSeed(master_pub_key);
+    spk_man->NewKeyPool();
 
     // Call FillPSBT
     PartiallySignedTransaction psbtx;
diff --git a/src/wallet/test/wallet_tests.cpp b/src/wallet/test/wallet_tests.cpp
index a2b2a7b227..ca4b932915 100644
--- a/src/wallet/test/wallet_tests.cpp
+++ b/src/wallet/test/wallet_tests.cpp
@@ -27,8 +27,10 @@ BOOST_FIXTURE_TEST_SUITE(wallet_tests, WalletTestingSetup)
 
 static void AddKey(CWallet& wallet, const CKey& key)
 {
+    auto spk_man = wallet.GetLegacyScriptPubKeyMan();
     LOCK(wallet.cs_wallet);
-    wallet.AddKeyPubKey(key, key.GetPubKey());
+    AssertLockHeld(spk_man->cs_wallet);
+    spk_man->AddKeyPubKey(key, key.GetPubKey());
 }
 
 BOOST_FIXTURE_TEST_CASE(scan_for_wallet_transactions, TestChain100Setup)
@@ -194,9 +196,11 @@ BOOST_FIXTURE_TEST_CASE(importwallet_rescan, TestChain100Setup)
     // Import key into wallet and call dumpwallet to create backup file.
     {
         std::shared_ptr<CWallet> wallet = std::make_shared<CWallet>(chain.get(), WalletLocation(), WalletDatabase::CreateDummy());
+        auto spk_man = wallet->GetLegacyScriptPubKeyMan();
         LOCK(wallet->cs_wallet);
-        wallet->mapKeyMetadata[coinbaseKey.GetPubKey().GetID()].nCreateTime = KEY_TIME;
-        wallet->AddKeyPubKey(coinbaseKey, coinbaseKey.GetPubKey());
+        AssertLockHeld(spk_man->cs_wallet);
+        spk_man->mapKeyMetadata[coinbaseKey.GetPubKey().GetID()].nCreateTime = KEY_TIME;
+        spk_man->AddKeyPubKey(coinbaseKey, coinbaseKey.GetPubKey());
 
         JSONRPCRequest request;
         request.params.setArray();
@@ -242,11 +246,13 @@ BOOST_FIXTURE_TEST_CASE(coin_mark_dirty_immature_credit, TestChain100Setup)
     auto chain = interfaces::MakeChain();
 
     CWallet wallet(chain.get(), WalletLocation(), WalletDatabase::CreateDummy());
+    auto spk_man = wallet.GetLegacyScriptPubKeyMan();
     CWalletTx wtx(&wallet, m_coinbase_txns.back());
 
     auto locked_chain = chain->lock();
     LockAssertion lock(::cs_main);
     LOCK(wallet.cs_wallet);
+    AssertLockHeld(spk_man->cs_wallet);
 
     wtx.SetConf(CWalletTx::Status::CONFIRMED, ::ChainActive().Tip()->GetBlockHash(), 0);
 
@@ -254,10 +260,10 @@ BOOST_FIXTURE_TEST_CASE(coin_mark_dirty_immature_credit, TestChain100Setup)
     // cache the current immature credit amount, which is 0.
     BOOST_CHECK_EQUAL(wtx.GetImmatureCredit(*locked_chain), 0);
 
-    // Invalidate the cached value, add the key, and make sure a new immature
+    // Invalidate the cached vanue, add the key, and make sure a new immature
     // credit amount is calculated.
     wtx.MarkDirty();
-    wallet.AddKeyPubKey(coinbaseKey, coinbaseKey.GetPubKey());
+    BOOST_CHECK(spk_man->AddKeyPubKey(coinbaseKey, coinbaseKey.GetPubKey()));
     BOOST_CHECK_EQUAL(wtx.GetImmatureCredit(*locked_chain), 50*COIN);
 }
 
@@ -337,37 +343,38 @@ BOOST_AUTO_TEST_CASE(LoadReceiveRequests)
     BOOST_CHECK_EQUAL(values[1], "val_rr1");
 }
 
-// Test some watch-only wallet methods by the procedure of loading (LoadWatchOnly),
+// Test some watch-only LegacyScriptPubKeyMan methods by the procedure of loading (LoadWatchOnly),
 // checking (HaveWatchOnly), getting (GetWatchPubKey) and removing (RemoveWatchOnly) a
 // given PubKey, resp. its corresponding P2PK Script. Results of the the impact on
 // the address -> PubKey map is dependent on whether the PubKey is a point on the curve
-static void TestWatchOnlyPubKey(CWallet& wallet, const CPubKey& add_pubkey)
+static void TestWatchOnlyPubKey(LegacyScriptPubKeyMan* spk_man, const CPubKey& add_pubkey)
 {
     CScript p2pk = GetScriptForRawPubKey(add_pubkey);
     CKeyID add_address = add_pubkey.GetID();
     CPubKey found_pubkey;
-    LOCK(wallet.cs_wallet);
+    LOCK(spk_man->cs_wallet);
 
     // all Scripts (i.e. also all PubKeys) are added to the general watch-only set
-    BOOST_CHECK(!wallet.HaveWatchOnly(p2pk));
-    wallet.LoadWatchOnly(p2pk);
-    BOOST_CHECK(wallet.HaveWatchOnly(p2pk));
+    BOOST_CHECK(!spk_man->HaveWatchOnly(p2pk));
+    spk_man->LoadWatchOnly(p2pk);
+    BOOST_CHECK(spk_man->HaveWatchOnly(p2pk));
 
     // only PubKeys on the curve shall be added to the watch-only address -> PubKey map
     bool is_pubkey_fully_valid = add_pubkey.IsFullyValid();
     if (is_pubkey_fully_valid) {
-        BOOST_CHECK(wallet.GetWatchPubKey(add_address, found_pubkey));
+        BOOST_CHECK(spk_man->GetWatchPubKey(add_address, found_pubkey));
         BOOST_CHECK(found_pubkey == add_pubkey);
     } else {
-        BOOST_CHECK(!wallet.GetWatchPubKey(add_address, found_pubkey));
+        BOOST_CHECK(!spk_man->GetWatchPubKey(add_address, found_pubkey));
         BOOST_CHECK(found_pubkey == CPubKey()); // passed key is unchanged
     }
 
-    wallet.RemoveWatchOnly(p2pk);
-    BOOST_CHECK(!wallet.HaveWatchOnly(p2pk));
+    AssertLockHeld(spk_man->cs_wallet);
+    spk_man->RemoveWatchOnly(p2pk);
+    BOOST_CHECK(!spk_man->HaveWatchOnly(p2pk));
 
     if (is_pubkey_fully_valid) {
-        BOOST_CHECK(!wallet.GetWatchPubKey(add_address, found_pubkey));
+        BOOST_CHECK(!spk_man->GetWatchPubKey(add_address, found_pubkey));
         BOOST_CHECK(found_pubkey == add_pubkey); // passed key is unchanged
     }
 }
@@ -382,37 +389,38 @@ static void PollutePubKey(CPubKey& pubkey)
     assert(pubkey.IsValid());
 }
 
-// Test watch-only wallet logic for PubKeys
+// Test watch-only logic for PubKeys
 BOOST_AUTO_TEST_CASE(WatchOnlyPubKeys)
 {
     CKey key;
     CPubKey pubkey;
+    LegacyScriptPubKeyMan* spk_man = m_wallet.GetLegacyScriptPubKeyMan();
 
-    BOOST_CHECK(!m_wallet.HaveWatchOnly());
+    BOOST_CHECK(!spk_man->HaveWatchOnly());
 
     // uncompressed valid PubKey
     key.MakeNewKey(false);
     pubkey = key.GetPubKey();
     assert(!pubkey.IsCompressed());
-    TestWatchOnlyPubKey(m_wallet, pubkey);
+    TestWatchOnlyPubKey(spk_man, pubkey);
 
     // uncompressed cryptographically invalid PubKey
     PollutePubKey(pubkey);
-    TestWatchOnlyPubKey(m_wallet, pubkey);
+    TestWatchOnlyPubKey(spk_man, pubkey);
 
     // compressed valid PubKey
     key.MakeNewKey(true);
     pubkey = key.GetPubKey();
     assert(pubkey.IsCompressed());
-    TestWatchOnlyPubKey(m_wallet, pubkey);
+    TestWatchOnlyPubKey(spk_man, pubkey);
 
     // compressed cryptographically invalid PubKey
     PollutePubKey(pubkey);
-    TestWatchOnlyPubKey(m_wallet, pubkey);
+    TestWatchOnlyPubKey(spk_man, pubkey);
 
     // invalid empty PubKey
     pubkey = CPubKey();
-    TestWatchOnlyPubKey(m_wallet, pubkey);
+    TestWatchOnlyPubKey(spk_man, pubkey);
 }
 
 class ListCoinsTestingSetup : public TestChain100Setup
diff --git a/src/wallet/wallet.cpp b/src/wallet/wallet.cpp
index a625c4ddec..4b1adfb38f 100644
--- a/src/wallet/wallet.cpp
+++ b/src/wallet/wallet.cpp
@@ -29,7 +29,6 @@
 #include <util/validation.h>
 #include <wallet/coincontrol.h>
 #include <wallet/fees.h>
-#include <wallet/scriptpubkeyman.h>
 
 #include <algorithm>
 #include <assert.h>
@@ -211,9 +210,9 @@ WalletCreationStatus CreateWallet(interfaces::Chain& chain, const SecureString&
             }
 
             // Set a seed for the wallet
-            CPubKey master_pub_key = wallet->GenerateNewSeed();
-            wallet->SetHDSeed(master_pub_key);
-            wallet->NewKeyPool();
+            CPubKey master_pub_key = wallet->m_spk_man->GenerateNewSeed();
+            wallet->m_spk_man->SetHDSeed(master_pub_key);
+            wallet->m_spk_man->NewKeyPool();
 
             // Relock the wallet
             wallet->Lock();
@@ -248,6 +247,14 @@ const CWalletTx* CWallet::GetWalletTx(const uint256& hash) const
     return &(it->second);
 }
 
+void CWallet::UpgradeKeyMetadata()
+{
+    AssertLockHeld(m_spk_man->cs_wallet);
+    if (m_spk_man) {
+        m_spk_man->UpgradeKeyMetadata();
+    }
+}
+
 bool CWallet::Unlock(const SecureString& strWalletPassphrase, bool accept_no_keys)
 {
     CCrypter crypter;
@@ -526,14 +533,15 @@ bool CWallet::EncryptWallet(const SecureString& strWalletPassphrase)
         }
         encrypted_batch->WriteMasterKey(nMasterKeyMaxID, kMasterKey);
 
-        if (!EncryptKeys(_vMasterKey))
-        {
-            encrypted_batch->TxnAbort();
-            delete encrypted_batch;
-            encrypted_batch = nullptr;
-            // We now probably have half of our keys encrypted in memory, and half not...
-            // die and let the user reload the unencrypted wallet.
-            assert(false);
+        if (auto spk_man = m_spk_man.get()) {
+            if (!spk_man->EncryptKeys(_vMasterKey)) {
+                encrypted_batch->TxnAbort();
+                delete encrypted_batch;
+                encrypted_batch = nullptr;
+                // We now probably have half of our keys encrypted in memory, and half not...
+                // die and let the user reload the unencrypted wallet.
+                assert(false);
+            }
         }
 
         // Encryption was introduced in version 0.4.0
@@ -554,11 +562,11 @@ bool CWallet::EncryptWallet(const SecureString& strWalletPassphrase)
         Unlock(strWalletPassphrase);
 
         // if we are using HD, replace the HD seed with a new one
-        if (IsHDEnabled()) {
-            SetHDSeed(GenerateNewSeed());
+        if (m_spk_man->IsHDEnabled()) {
+            m_spk_man->SetHDSeed(m_spk_man->GenerateNewSeed());
         }
 
-        NewKeyPool();
+        m_spk_man->NewKeyPool();
         Lock();
 
         // Need to completely rewrite the wallet file; if we don't, bdb might keep
@@ -690,7 +698,7 @@ void CWallet::SetUsedDestinationState(const uint256& hash, unsigned int n, bool
 
     CTxDestination dst;
     if (ExtractDestination(srctx->tx->vout[n].scriptPubKey, dst)) {
-        if (::IsMine(*this, dst)) {
+        if (IsMine(dst)) {
             LOCK(cs_wallet);
             if (used && !GetDestData(dst, "used", nullptr)) {
                 AddDestData(dst, "used", "p"); // p for "present", opposite of absent (null)
@@ -704,7 +712,7 @@ void CWallet::SetUsedDestinationState(const uint256& hash, unsigned int n, bool
 bool CWallet::IsUsedDestination(const CTxDestination& dst) const
 {
     LOCK(cs_wallet);
-    return ::IsMine(*this, dst) && GetDestData(dst, "used", nullptr);
+    return IsMine(dst) && GetDestData(dst, "used", nullptr);
 }
 
 bool CWallet::IsUsedDestination(const uint256& hash, unsigned int n) const
@@ -864,13 +872,13 @@ bool CWallet::AddToWalletIfInvolvingMe(const CTransactionRef& ptx, CWalletTx::St
             // loop though all outputs
             for (const CTxOut& txout: tx.vout) {
                 // extract addresses and check if they match with an unused keypool key
-                for (const auto& keyid : GetAffectedKeys(txout.scriptPubKey, *this)) {
-                    std::map<CKeyID, int64_t>::const_iterator mi = m_pool_key_to_index.find(keyid);
-                    if (mi != m_pool_key_to_index.end()) {
+                for (const auto& keyid : GetAffectedKeys(txout.scriptPubKey, *m_spk_man)) {
+                    std::map<CKeyID, int64_t>::const_iterator mi = m_spk_man->m_pool_key_to_index.find(keyid);
+                    if (mi != m_spk_man->m_pool_key_to_index.end()) {
                         WalletLogPrintf("%s: Detected a used keypool key, mark all keypool key up to this key as used\n", __func__);
                         MarkReserveKeysAsUsed(mi->second);
 
-                        if (!TopUpKeyPool()) {
+                        if (!m_spk_man->TopUpKeyPool()) {
                             WalletLogPrintf("%s: Topping up keypool failed (locked wallet)\n", __func__);
                         }
                     }
@@ -1126,13 +1134,21 @@ CAmount CWallet::GetDebit(const CTxIn &txin, const isminefilter& filter) const
 
 isminetype CWallet::IsMine(const CTxOut& txout) const
 {
-    return ::IsMine(*this, txout.scriptPubKey);
+    return IsMine(txout.scriptPubKey);
+}
+
+isminetype CWallet::IsMine(const CTxDestination& dest) const
+{
+    return IsMine(GetScriptForDestination(dest));
 }
 
-isminetype IsMine(const CWallet& keystore, const CTxDestination& dest)
+isminetype CWallet::IsMine(const CScript& script) const
 {
-    CScript script = GetScriptForDestination(dest);
-    return IsMine(keystore, script);
+    isminetype result = ISMINE_NO;
+    if (auto spk_man = m_spk_man.get()) {
+        result = spk_man->IsMine(script);
+    }
+    return result;
 }
 
 CAmount CWallet::GetCredit(const CTxOut& txout, const isminefilter& filter) const
@@ -1156,7 +1172,7 @@ bool CWallet::IsChange(const CScript& script) const
     // a better way of identifying which outputs are 'the send' and which are
     // 'the change' will need to be implemented (maybe extend CWalletTx to remember
     // which output, if any, was change).
-    if (::IsMine(*this, script))
+    if (IsMine(script))
     {
         CTxDestination address;
         if (!ExtractDestination(script, address))
@@ -1246,6 +1262,26 @@ CAmount CWallet::GetChange(const CTransaction& tx) const
     return nChange;
 }
 
+bool CWallet::IsHDEnabled() const
+{
+    bool result = true;
+    if (auto spk_man = m_spk_man.get()) {
+        result &= spk_man->IsHDEnabled();
+    }
+    return result;
+}
+
+bool CWallet::CanGetAddresses(bool internal)
+{
+    {
+        auto spk_man = m_spk_man.get();
+        if (spk_man && spk_man->CanGetAddresses(internal)) {
+            return true;
+        }
+    }
+    return false;
+}
+
 void CWallet::SetWalletFlag(uint64_t flags)
 {
     LOCK(cs_wallet);
@@ -1302,7 +1338,9 @@ bool CWallet::DummySignInput(CTxIn &tx_in, const CTxOut &txout, bool use_max_sig
     const CScript& scriptPubKey = txout.scriptPubKey;
     SignatureData sigdata;
 
-    if (!ProduceSignature(*this, use_max_sig ? DUMMY_MAXIMUM_SIGNATURE_CREATOR : DUMMY_SIGNATURE_CREATOR, scriptPubKey, sigdata)) {
+    const SigningProvider* provider = GetSigningProvider();
+
+    if (!ProduceSignature(*provider, use_max_sig ? DUMMY_MAXIMUM_SIGNATURE_CREATOR : DUMMY_SIGNATURE_CREATOR, scriptPubKey, sigdata)) {
         return false;
     }
     UpdateInput(tx_in, sigdata);
@@ -1325,6 +1363,49 @@ bool CWallet::DummySignTx(CMutableTransaction &txNew, const std::vector<CTxOut>
     return true;
 }
 
+bool CWallet::ImportScripts(const std::set<CScript> scripts, int64_t timestamp)
+{
+    auto spk_man = GetLegacyScriptPubKeyMan();
+    if (!spk_man) {
+        return false;
+    }
+    AssertLockHeld(spk_man->cs_wallet);
+    return spk_man->ImportScripts(scripts, timestamp);
+}
+
+bool CWallet::ImportPrivKeys(const std::map<CKeyID, CKey>& privkey_map, const int64_t timestamp)
+{
+    auto spk_man = GetLegacyScriptPubKeyMan();
+    if (!spk_man) {
+        return false;
+    }
+    AssertLockHeld(spk_man->cs_wallet);
+    return spk_man->ImportPrivKeys(privkey_map, timestamp);
+}
+
+bool CWallet::ImportPubKeys(const std::vector<CKeyID>& ordered_pubkeys, const std::map<CKeyID, CPubKey>& pubkey_map, const std::map<CKeyID, std::pair<CPubKey, KeyOriginInfo>>& key_origins, const bool add_keypool, const bool internal, const int64_t timestamp)
+{
+    auto spk_man = GetLegacyScriptPubKeyMan();
+    if (!spk_man) {
+        return false;
+    }
+    AssertLockHeld(spk_man->cs_wallet);
+    return spk_man->ImportPubKeys(ordered_pubkeys, pubkey_map, key_origins, add_keypool, internal, timestamp);
+}
+
+bool CWallet::ImportScriptPubKeys(const std::string& label, const std::set<CScript>& script_pub_keys, const bool have_solving_data, const bool apply_label, const int64_t timestamp)
+{
+    auto spk_man = GetLegacyScriptPubKeyMan();
+    if (!spk_man) {
+        return false;
+    }
+    AssertLockHeld(spk_man->cs_wallet);
+    if (!spk_man->ImportScriptPubKeys(label, script_pub_keys, have_solving_data, apply_label, timestamp)) {
+        return false;
+    }
+    return true;
+}
+
 int64_t CalculateMaximumSignedTxSize(const CTransaction &tx, const CWallet *wallet, bool use_max_sig)
 {
     std::vector<CTxOut> txouts;
@@ -2001,7 +2082,9 @@ void CWallet::AvailableCoins(interfaces::Chain::Lock& locked_chain, std::vector<
                 continue;
             }
 
-            bool solvable = IsSolvable(*this, wtx.tx->vout[i].scriptPubKey);
+            const SigningProvider* provider = GetSigningProvider();
+
+            bool solvable = provider ? IsSolvable(*provider, wtx.tx->vout[i].scriptPubKey) : false;
             bool spendable = ((mine & ISMINE_SPENDABLE) != ISMINE_NO) || (((mine & ISMINE_WATCH_ONLY) != ISMINE_NO) && (coinControl && coinControl->fAllowWatchOnly && solvable));
 
             vCoins.push_back(COutput(&wtx, i, nDepth, spendable, solvable, safeTx, (coinControl && coinControl->fAllowWatchOnly)));
@@ -2235,7 +2318,13 @@ bool CWallet::SignTransaction(CMutableTransaction& tx)
         const CScript& scriptPubKey = mi->second.tx->vout[input.prevout.n].scriptPubKey;
         const CAmount& amount = mi->second.tx->vout[input.prevout.n].nValue;
         SignatureData sigdata;
-        if (!ProduceSignature(*this, MutableTransactionSignatureCreator(&tx, nIn, amount, SIGHASH_ALL), scriptPubKey, sigdata)) {
+
+        const SigningProvider* provider = GetSigningProvider();
+        if (!provider) {
+            return false;
+        }
+
+        if (!ProduceSignature(*provider, MutableTransactionSignatureCreator(&tx, nIn, amount, SIGHASH_ALL), scriptPubKey, sigdata)) {
             return false;
         }
         UpdateInput(input, sigdata);
@@ -2693,7 +2782,12 @@ bool CWallet::CreateTransaction(interfaces::Chain::Lock& locked_chain, const std
                 const CScript& scriptPubKey = coin.txout.scriptPubKey;
                 SignatureData sigdata;
 
-                if (!ProduceSignature(*this, MutableTransactionSignatureCreator(&txNew, nIn, coin.txout.nValue, SIGHASH_ALL), scriptPubKey, sigdata))
+                const SigningProvider* provider = GetSigningProvider();
+                if (!provider) {
+                    return false;
+                }
+
+                if (!ProduceSignature(*provider, MutableTransactionSignatureCreator(&txNew, nIn, coin.txout.nValue, SIGHASH_ALL), scriptPubKey, sigdata))
                 {
                     strFailReason = _("Signing transaction failed").translated;
                     return false;
@@ -2801,7 +2895,7 @@ DBErrors CWallet::LoadWallet(bool& fFirstRunRet)
         {
             setInternalKeyPool.clear();
             setExternalKeyPool.clear();
-            m_pool_key_to_index.clear();
+            m_spk_man->m_pool_key_to_index.clear();
             // Note: can't top-up keypool here, because wallet is locked.
             // User will be prompted to unlock wallet the next operation
             // that requires a new key.
@@ -2838,7 +2932,7 @@ DBErrors CWallet::ZapSelectTx(std::vector<uint256>& vHashIn, std::vector<uint256
         {
             setInternalKeyPool.clear();
             setExternalKeyPool.clear();
-            m_pool_key_to_index.clear();
+            m_spk_man->m_pool_key_to_index.clear();
             // Note: can't top-up keypool here, because wallet is locked.
             // User will be prompted to unlock wallet the next operation
             // that requires a new key.
@@ -2863,7 +2957,7 @@ DBErrors CWallet::ZapWalletTx(std::vector<CWalletTx>& vWtx)
             LOCK(cs_wallet);
             setInternalKeyPool.clear();
             setExternalKeyPool.clear();
-            m_pool_key_to_index.clear();
+            m_spk_man->m_pool_key_to_index.clear();
             // Note: can't top-up keypool here, because wallet is locked.
             // User will be prompted to unlock wallet the next operation
             // that requires a new key.
@@ -2887,7 +2981,7 @@ bool CWallet::SetAddressBookWithDB(WalletBatch& batch, const CTxDestination& add
         if (!strPurpose.empty()) /* update purpose only if requested */
             mapAddressBook[address].purpose = strPurpose;
     }
-    NotifyAddressBookChanged(this, address, strName, ::IsMine(*this, address) != ISMINE_NO,
+    NotifyAddressBookChanged(this, address, strName, IsMine(address) != ISMINE_NO,
                              strPurpose, (fUpdated ? CT_UPDATED : CT_NEW) );
     if (!strPurpose.empty() && !batch.WritePurpose(EncodeDestination(address), strPurpose))
         return false;
@@ -2914,17 +3008,50 @@ bool CWallet::DelAddressBook(const CTxDestination& address)
         mapAddressBook.erase(address);
     }
 
-    NotifyAddressBookChanged(this, address, "", ::IsMine(*this, address) != ISMINE_NO, "", CT_DELETED);
+    NotifyAddressBookChanged(this, address, "", IsMine(address) != ISMINE_NO, "", CT_DELETED);
 
     WalletBatch(*database).ErasePurpose(EncodeDestination(address));
     return WalletBatch(*database).EraseName(EncodeDestination(address));
 }
 
+size_t CWallet::KeypoolCountExternalKeys()
+{
+    AssertLockHeld(cs_wallet);
+
+    unsigned int count = 0;
+    if (auto spk_man = m_spk_man.get()) {
+        AssertLockHeld(spk_man->cs_wallet);
+        count += spk_man->KeypoolCountExternalKeys();
+    }
+
+    return count;
+}
+
+bool CWallet::TopUpKeyPool(unsigned int kpSize)
+{
+    bool res = true;
+    if (auto spk_man = m_spk_man.get()) {
+        res &= spk_man->TopUpKeyPool(kpSize);
+    }
+    return res;
+}
+
+bool CWallet::GetNewDestination(const OutputType type, const std::string label, CTxDestination& dest, std::string& error)
+{
+    error.clear();
+    bool result = false;
+    auto spk_man = m_spk_man.get();
+    if (spk_man) {
+        result = spk_man->GetNewDestination(type, label, dest, error);
+    }
+    return result;
+}
+
 bool CWallet::GetNewChangeDestination(const OutputType type, CTxDestination& dest, std::string& error)
 {
     error.clear();
 
-    TopUpKeyPool();
+    m_spk_man->TopUpKeyPool();
 
     ReserveDestination reservedest(this);
     if (!reservedest.GetReservedDestination(type, dest, true)) {
@@ -2936,6 +3063,15 @@ bool CWallet::GetNewChangeDestination(const OutputType type, CTxDestination& des
     return true;
 }
 
+int64_t CWallet::GetOldestKeyPoolTime()
+{
+    int64_t oldestKey = std::numeric_limits<int64_t>::max();
+    if (auto spk_man = m_spk_man.get()) {
+        oldestKey = spk_man->GetOldestKeyPoolTime();
+    }
+    return oldestKey;
+}
+
 std::map<CTxDestination, CAmount> CWallet::GetAddressBalances(interfaces::Chain::Lock& locked_chain)
 {
     std::map<CTxDestination, CAmount> balances;
@@ -3085,6 +3221,11 @@ std::set<CTxDestination> CWallet::GetLabelAddresses(const std::string& label) co
 
 bool ReserveDestination::GetReservedDestination(const OutputType type, CTxDestination& dest, bool internal)
 {
+    m_spk_man = pwallet->GetLegacyScriptPubKeyMan();
+    if (!m_spk_man) {
+        return false;
+    }
+
     if (!pwallet->CanGetAddresses(internal)) {
         return false;
     }
@@ -3092,14 +3233,14 @@ bool ReserveDestination::GetReservedDestination(const OutputType type, CTxDestin
     if (nIndex == -1)
     {
         CKeyPool keypool;
-        if (!pwallet->ReserveKeyFromKeyPool(nIndex, keypool, internal)) {
+        if (!m_spk_man->ReserveKeyFromKeyPool(nIndex, keypool, internal)) {
             return false;
         }
         vchPubKey = keypool.vchPubKey;
         fInternal = keypool.fInternal;
     }
     assert(vchPubKey.IsValid());
-    pwallet->LearnRelatedScripts(vchPubKey, type);
+    m_spk_man->LearnRelatedScripts(vchPubKey, type);
     address = GetDestinationForKey(vchPubKey, type);
     dest = address;
     return true;
@@ -3108,7 +3249,7 @@ bool ReserveDestination::GetReservedDestination(const OutputType type, CTxDestin
 void ReserveDestination::KeepDestination()
 {
     if (nIndex != -1)
-        pwallet->KeepKey(nIndex);
+        m_spk_man->KeepKey(nIndex);
     nIndex = -1;
     vchPubKey = CPubKey();
     address = CNoDestination();
@@ -3117,7 +3258,7 @@ void ReserveDestination::KeepDestination()
 void ReserveDestination::ReturnDestination()
 {
     if (nIndex != -1) {
-        pwallet->ReturnKey(nIndex, fInternal, vchPubKey);
+        m_spk_man->ReturnKey(nIndex, fInternal, vchPubKey);
     }
     nIndex = -1;
     vchPubKey = CPubKey();
@@ -3166,8 +3307,12 @@ void CWallet::GetKeyBirthTimes(interfaces::Chain::Lock& locked_chain, std::map<C
     AssertLockHeld(cs_wallet);
     mapKeyBirth.clear();
 
+    LegacyScriptPubKeyMan* spk_man = GetLegacyScriptPubKeyMan();
+    assert(spk_man != nullptr);
+    AssertLockHeld(spk_man->cs_wallet);
+
     // get birth times for keys with metadata
-    for (const auto& entry : mapKeyMetadata) {
+    for (const auto& entry : spk_man->mapKeyMetadata) {
         if (entry.second.nCreateTime) {
             mapKeyBirth[entry.first] = entry.second.nCreateTime;
         }
@@ -3177,7 +3322,7 @@ void CWallet::GetKeyBirthTimes(interfaces::Chain::Lock& locked_chain, std::map<C
     const Optional<int> tip_height = locked_chain.getHeight();
     const int max_height = tip_height && *tip_height > 144 ? *tip_height - 144 : 0; // the tip can be reorganized; use a 144-block safety margin
     std::map<CKeyID, int> mapKeyFirstBlock;
-    for (const CKeyID &keyid : GetKeys()) {
+    for (const CKeyID &keyid : spk_man->GetKeys()) {
         if (mapKeyBirth.count(keyid) == 0)
             mapKeyFirstBlock[keyid] = max_height;
     }
@@ -3194,7 +3339,7 @@ void CWallet::GetKeyBirthTimes(interfaces::Chain::Lock& locked_chain, std::map<C
             // ... which are already in a block
             for (const CTxOut &txout : wtx.tx->vout) {
                 // iterate over all their outputs
-                for (const auto &keyid : GetAffectedKeys(txout.scriptPubKey, *this)) {
+                for (const auto &keyid : GetAffectedKeys(txout.scriptPubKey, *spk_man)) {
                     // ... and all their affected keys
                     std::map<CKeyID, int>::iterator rit = mapKeyFirstBlock.find(keyid);
                     if (rit != mapKeyFirstBlock.end() && *height < rit->second)
@@ -3461,13 +3606,13 @@ std::shared_ptr<CWallet> CWallet::CreateWalletFromFile(interfaces::Chain& chain,
 
         bool hd_upgrade = false;
         bool split_upgrade = false;
-        if (walletInstance->CanSupportFeature(FEATURE_HD) && !walletInstance->IsHDEnabled()) {
+        if (walletInstance->CanSupportFeature(FEATURE_HD) && !walletInstance->m_spk_man->IsHDEnabled()) {
             walletInstance->WalletLogPrintf("Upgrading wallet to HD\n");
             walletInstance->SetMinVersion(FEATURE_HD);
 
             // generate a new master key
-            CPubKey masterPubKey = walletInstance->GenerateNewSeed();
-            walletInstance->SetHDSeed(masterPubKey);
+            CPubKey masterPubKey = walletInstance->m_spk_man->GenerateNewSeed();
+            walletInstance->m_spk_man->SetHDSeed(masterPubKey);
             hd_upgrade = true;
         }
         // Upgrade to HD chain split if necessary
@@ -3482,7 +3627,7 @@ std::shared_ptr<CWallet> CWallet::CreateWalletFromFile(interfaces::Chain& chain,
         }
         // Regenerate the keypool if upgraded to HD
         if (hd_upgrade) {
-            if (!walletInstance->TopUpKeyPool()) {
+            if (!walletInstance->m_spk_man->TopUpKeyPool()) {
                 error = _("Unable to generate keys").translated;
                 return nullptr;
             }
@@ -3497,12 +3642,12 @@ std::shared_ptr<CWallet> CWallet::CreateWalletFromFile(interfaces::Chain& chain,
         walletInstance->SetWalletFlags(wallet_creation_flags, false);
         if (!(wallet_creation_flags & (WALLET_FLAG_DISABLE_PRIVATE_KEYS | WALLET_FLAG_BLANK_WALLET))) {
             // generate a new seed
-            CPubKey seed = walletInstance->GenerateNewSeed();
-            walletInstance->SetHDSeed(seed);
+            CPubKey seed = walletInstance->m_spk_man->GenerateNewSeed();
+            walletInstance->m_spk_man->SetHDSeed(seed);
         }
 
         // Top up the keypool
-        if (walletInstance->CanGenerateKeys() && !walletInstance->TopUpKeyPool()) {
+        if (walletInstance->m_spk_man->CanGenerateKeys() && !walletInstance->m_spk_man->TopUpKeyPool()) {
             error = _("Unable to generate initial keys").translated;
             return nullptr;
         }
@@ -3858,3 +4003,18 @@ bool CWallet::Lock()
     NotifyStatusChanged(this);
     return true;
 }
+
+ScriptPubKeyMan* CWallet::GetScriptPubKeyMan() const
+{
+    return m_spk_man.get();
+}
+
+const SigningProvider* CWallet::GetSigningProvider() const
+{
+    return m_spk_man.get();
+}
+
+LegacyScriptPubKeyMan* CWallet::GetLegacyScriptPubKeyMan() const
+{
+    return m_spk_man.get();
+}
diff --git a/src/wallet/wallet.h b/src/wallet/wallet.h
index 7a0cdec5ef..f3b791441c 100644
--- a/src/wallet/wallet.h
+++ b/src/wallet/wallet.h
@@ -18,7 +18,7 @@
 #include <validationinterface.h>
 #include <wallet/coinselection.h>
 #include <wallet/crypter.h>
-#include <wallet/ismine.h>
+#include <wallet/scriptpubkeyman.h>
 #include <wallet/walletdb.h>
 #include <wallet/walletutil.h>
 
@@ -141,6 +141,7 @@ class ReserveDestination
 protected:
     //! The wallet to reserve from
     CWallet* pwallet;
+    LegacyScriptPubKeyMan* m_spk_man{nullptr};
     //! The index of the address's key in the keypool
     int64_t nIndex{-1};
     //! The public key for the address
@@ -581,10 +582,9 @@ struct CoinSelectionParams
 
 class WalletRescanReserver; //forward declarations for ScanForWalletTransactions/RescanFromTime
 /**
- * A CWallet is an extension of a keystore, which also maintains a set of transactions and balances,
- * and provides the ability to create new transactions.
+ * A CWallet maintains a set of transactions and balances, and provides the ability to create new transactions.
  */
-class CWallet final : public FillableSigningProvider, private interfaces::Chain::Notifications
+class CWallet final : public WalletStorage, private interfaces::Chain::Notifications
 {
 private:
     CKeyingMaterial vMasterKey GUARDED_BY(cs_KeyStore);
@@ -596,22 +596,8 @@ private:
     //! keeps track of whether Unlock has run a thorough check before
     bool fDecryptionThoroughlyChecked;
 
-    using CryptedKeyMap = std::map<CKeyID, std::pair<CPubKey, std::vector<unsigned char>>>;
-    using WatchOnlySet = std::set<CScript>;
-    using WatchKeyMap = std::map<CKeyID, CPubKey>;
-
     bool SetCrypted();
-
-    //! will encrypt previously unencrypted keys
-    bool EncryptKeys(CKeyingMaterial& vMasterKeyIn);
-
     bool Unlock(const CKeyingMaterial& vMasterKeyIn, bool accept_no_keys = false);
-    CryptedKeyMap mapCryptedKeys GUARDED_BY(cs_KeyStore);
-    WatchOnlySet setWatchOnly GUARDED_BY(cs_KeyStore);
-    WatchKeyMap mapWatchKeys GUARDED_BY(cs_KeyStore);
-
-    bool AddCryptedKeyInner(const CPubKey &vchPubKey, const std::vector<unsigned char> &vchCryptedSecret);
-    bool AddKeyPubKeyInner(const CKey& key, const CPubKey &pubkey);
 
     std::atomic<bool> fAbortRescan{false};
     std::atomic<bool> fScanningWallet{false}; // controlled by WalletRescanReserver
@@ -620,8 +606,6 @@ private:
     std::mutex mutexScanning;
     friend class WalletRescanReserver;
 
-    WalletBatch *encrypted_batch GUARDED_BY(cs_wallet) = nullptr;
-
     //! the current wallet version: clients below this version are not able to load the wallet
     int nWalletVersion GUARDED_BY(cs_wallet){FEATURE_BASE};
 
@@ -671,52 +655,12 @@ private:
      * Should be called with non-zero block_hash and posInBlock if this is for a transaction that is included in a block. */
     void SyncTransaction(const CTransactionRef& tx, CWalletTx::Status status, const uint256& block_hash, int posInBlock = 0, bool update_tx = true) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
 
-    /* the HD chain data model (external chain counters) */
-    CHDChain hdChain;
-
-    /* HD derive new child key (on internal or external chain) */
-    void DeriveNewChildKey(WalletBatch& batch, CKeyMetadata& metadata, CKey& secret, bool internal = false) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
-
-    std::set<int64_t> setInternalKeyPool GUARDED_BY(cs_wallet);
-    std::set<int64_t> setExternalKeyPool GUARDED_BY(cs_wallet);
-    std::set<int64_t> set_pre_split_keypool GUARDED_BY(cs_wallet);
-    int64_t m_max_keypool_index GUARDED_BY(cs_wallet) = 0;
-    std::map<CKeyID, int64_t> m_pool_key_to_index;
     std::atomic<uint64_t> m_wallet_flags{0};
 
-    int64_t nTimeFirstKey GUARDED_BY(cs_wallet) = 0;
-
-    /**
-     * Private version of AddWatchOnly method which does not accept a
-     * timestamp, and which will reset the wallet's nTimeFirstKey value to 1 if
-     * the watch key did not previously have a timestamp associated with it.
-     * Because this is an inherited virtual method, it is accessible despite
-     * being marked private, but it is marked private anyway to encourage use
-     * of the other AddWatchOnly which accepts a timestamp and sets
-     * nTimeFirstKey more intelligently for more efficient rescans.
-     */
-    bool AddWatchOnly(const CScript& dest) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
-    bool AddWatchOnlyWithDB(WalletBatch &batch, const CScript& dest) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
-    bool AddWatchOnlyInMem(const CScript &dest);
-
-    /** Add a KeyOriginInfo to the wallet */
-    bool AddKeyOriginWithDB(WalletBatch& batch, const CPubKey& pubkey, const KeyOriginInfo& info);
-
-    //! Adds a key to the store, and saves it to disk.
-    bool AddKeyPubKeyWithDB(WalletBatch &batch,const CKey& key, const CPubKey &pubkey) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
-
-    //! Adds a watch-only address to the store, and saves it to disk.
-    bool AddWatchOnlyWithDB(WalletBatch &batch, const CScript& dest, int64_t create_time) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
-
-    void AddKeypoolPubkeyWithDB(const CPubKey& pubkey, const bool internal, WalletBatch& batch);
-
     bool SetAddressBookWithDB(WalletBatch& batch, const CTxDestination& address, const std::string& strName, const std::string& strPurpose);
 
-    //! Adds a script to the store and saves it to disk
-    bool AddCScriptWithDB(WalletBatch& batch, const CScript& script);
-
     //! Unsets a wallet flag and saves it to disk
-    void UnsetWalletFlagWithDB(WalletBatch& batch, uint64_t flag);
+    void UnsetWalletFlagWithDB(WalletBatch& batch, uint64_t flag) override;
 
     /** Interface for accessing chain state. */
     interfaces::Chain* m_chain;
@@ -737,9 +681,6 @@ private:
      */
     uint256 m_last_block_processed GUARDED_BY(cs_wallet);
 
-    //! Fetches a key from the keypool
-    bool GetKeyFromPool(CPubKey &key, bool internal = false);
-
 public:
     /*
      * Main wallet lock.
@@ -754,6 +695,7 @@ public:
     {
         return *database;
     }
+    WalletDatabase& GetDatabase() override { return *database; }
 
     /**
      * Select a set of coins such that nValueRet >= nTargetValue and at least
@@ -769,15 +711,6 @@ public:
      */
     const std::string& GetName() const { return m_location.GetName(); }
 
-    void LoadKeyPool(int64_t nIndex, const CKeyPool &keypool) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
-    void MarkPreSplitKeys() EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
-
-    // Map from Key ID to key metadata.
-    std::map<CKeyID, CKeyMetadata> mapKeyMetadata GUARDED_BY(cs_wallet);
-
-    // Map from Script ID to key metadata (for watch-only keys).
-    std::map<CScriptID, CKeyMetadata> m_script_metadata GUARDED_BY(cs_wallet);
-
     typedef std::map<unsigned int, CMasterKey> MasterKeyMap;
     MasterKeyMap mapMasterKeys;
     unsigned int nMasterKeyMaxID = 0;
@@ -801,7 +734,7 @@ public:
     }
 
     bool IsCrypted() const { return fUseCrypto; }
-    bool IsLocked() const;
+    bool IsLocked() const override;
     bool Lock();
 
     /** Interface to assert chain access and if successful lock it */
@@ -831,7 +764,7 @@ public:
     const CWalletTx* GetWalletTx(const uint256& hash) const;
 
     //! check whether we are allowed to upgrade (or already support) to the named feature
-    bool CanSupportFeature(enum WalletFeature wf) const EXCLUSIVE_LOCKS_REQUIRED(cs_wallet) { AssertLockHeld(cs_wallet); return nWalletMaxVersion >= wf; }
+    bool CanSupportFeature(enum WalletFeature wf) const override EXCLUSIVE_LOCKS_REQUIRED(cs_wallet) { AssertLockHeld(cs_wallet); return nWalletMaxVersion >= wf; }
 
     /**
      * populate vCoins with vector of available COutputs.
@@ -881,34 +814,10 @@ public:
     int64_t ScanningDuration() const { return fScanningWallet ? GetTimeMillis() - m_scanning_start : 0; }
     double ScanningProgress() const { return fScanningWallet ? (double) m_scanning_progress : 0; }
 
-    /**
-     * keystore implementation
-     * Generate a new key
-     */
-    CPubKey GenerateNewKey(WalletBatch& batch, bool internal = false) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
-    //! Adds a key to the store, and saves it to disk.
-    bool AddKeyPubKey(const CKey& key, const CPubKey &pubkey) override EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
-    //! Adds a key to the store, without saving it to disk (used by LoadWallet)
-    bool LoadKey(const CKey& key, const CPubKey &pubkey) { return AddKeyPubKeyInner(key, pubkey); }
-    //! Load metadata (used by LoadWallet)
-    void LoadKeyMetadata(const CKeyID& keyID, const CKeyMetadata &metadata) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
-    void LoadScriptMetadata(const CScriptID& script_id, const CKeyMetadata &metadata) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
     //! Upgrade stored CKeyMetadata objects to store key origin info as KeyOriginInfo
     void UpgradeKeyMetadata() EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
 
     bool LoadMinVersion(int nVersion) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet) { AssertLockHeld(cs_wallet); nWalletVersion = nVersion; nWalletMaxVersion = std::max(nWalletMaxVersion, nVersion); return true; }
-    void UpdateTimeFirstKey(int64_t nCreateTime) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
-
-    //! Adds an encrypted key to the store, and saves it to disk.
-    bool AddCryptedKey(const CPubKey &vchPubKey, const std::vector<unsigned char> &vchCryptedSecret);
-    //! Adds an encrypted key to the store, without saving it to disk (used by LoadWallet)
-    bool LoadCryptedKey(const CPubKey &vchPubKey, const std::vector<unsigned char> &vchCryptedSecret);
-    bool GetKey(const CKeyID &address, CKey& keyOut) const override;
-    bool GetPubKey(const CKeyID &address, CPubKey& vchPubKeyOut) const override;
-    bool HaveKey(const CKeyID &address) const override;
-    std::set<CKeyID> GetKeys() const override;
-    bool AddCScript(const CScript& redeemScript) override;
-    bool LoadCScript(const CScript& redeemScript);
 
     //! Adds a destination data tuple to the store, and saves it to disk
     bool AddDestData(const CTxDestination& dest, const std::string& key, const std::string& value) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
@@ -921,18 +830,6 @@ public:
     //! Get all destination values matching a prefix.
     std::vector<std::string> GetDestValues(const std::string& prefix) const EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
 
-    //! Adds a watch-only address to the store, and saves it to disk.
-    bool AddWatchOnly(const CScript& dest, int64_t nCreateTime) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
-    bool RemoveWatchOnly(const CScript &dest) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
-    //! Adds a watch-only address to the store, without saving it to disk (used by LoadWallet)
-    bool LoadWatchOnly(const CScript &dest);
-    //! Returns whether the watch-only script is in the wallet
-    bool HaveWatchOnly(const CScript &dest) const;
-    //! Returns whether there are any watch-only things in the wallet
-    bool HaveWatchOnly() const;
-    //! Fetches a pubkey from mapWatchKeys if it exists there
-    bool GetWatchPubKey(const CKeyID &address, CPubKey &pubkey_out) const;
-
     //! Holds a timestamp at which point the wallet is scheduled (externally) to be relocked. Caller must arrange for actual relocking to occur via Lock().
     int64_t nRelockTime = 0;
 
@@ -1048,33 +945,10 @@ public:
     /** Absolute maximum transaction fee (in satoshis) used by default for the wallet */
     CAmount m_default_max_tx_fee{DEFAULT_TRANSACTION_MAXFEE};
 
-    bool NewKeyPool();
     size_t KeypoolCountExternalKeys() EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
     bool TopUpKeyPool(unsigned int kpSize = 0);
 
-    /**
-     * Reserves a key from the keypool and sets nIndex to its index
-     *
-     * @param[out] nIndex the index of the key in keypool
-     * @param[out] keypool the keypool the key was drawn from, which could be the
-     *     the pre-split pool if present, or the internal or external pool
-     * @param fRequestedInternal true if the caller would like the key drawn
-     *     from the internal keypool, false if external is preferred
-     *
-     * @return true if succeeded, false if failed due to empty keypool
-     * @throws std::runtime_error if keypool read failed, key was invalid,
-     *     was not found in the wallet, or was misclassified in the internal
-     *     or external keypool
-     */
-    bool ReserveKeyFromKeyPool(int64_t& nIndex, CKeyPool& keypool, bool fRequestedInternal);
-    void KeepKey(int64_t nIndex);
-    void ReturnKey(int64_t nIndex, bool fInternal, const CPubKey& pubkey);
     int64_t GetOldestKeyPoolTime();
-    /**
-     * Marks all keys in the keypool up to and including reserve_key as used.
-     */
-    void MarkReserveKeysAsUsed(int64_t keypool_id) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
-    const std::map<CKeyID, int64_t>& GetAllReserveKeys() const { return m_pool_key_to_index; }
 
     std::set<std::set<CTxDestination>> GetAddressGroupings() EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
     std::map<CTxDestination, CAmount> GetAddressBalances(interfaces::Chain::Lock& locked_chain);
@@ -1084,6 +958,8 @@ public:
     bool GetNewDestination(const OutputType type, const std::string label, CTxDestination& dest, std::string& error);
     bool GetNewChangeDestination(const OutputType type, CTxDestination& dest, std::string& error);
 
+    isminetype IsMine(const CTxDestination& dest) const;
+    isminetype IsMine(const CScript& script) const;
     isminetype IsMine(const CTxIn& txin) const;
     /**
      * Returns amount of debit if the input matches the
@@ -1120,7 +996,7 @@ public:
     }
 
     //! signify that a particular wallet feature is now used. this may change nWalletVersion and nWalletMaxVersion if those are lower
-    void SetMinVersion(enum WalletFeature, WalletBatch* batch_in = nullptr, bool fExplicit = false);
+    void SetMinVersion(enum WalletFeature, WalletBatch* batch_in = nullptr, bool fExplicit = false) override;
 
     //! change which version we're allowed to upgrade to (note that this does not immediately imply upgrading to that format)
     bool SetMaxVersion(int nVersion);
@@ -1199,31 +1075,12 @@ public:
 
     bool BackupWallet(const std::string& strDest);
 
-    /* Set the HD chain model (chain child index counters) */
-    void SetHDChain(const CHDChain& chain, bool memonly);
-    const CHDChain& GetHDChain() const { return hdChain; }
-
     /* Returns true if HD is enabled */
     bool IsHDEnabled() const;
 
-    /* Returns true if the wallet can generate new keys */
-    bool CanGenerateKeys();
-
     /* Returns true if the wallet can give out new addresses. This means it has keys in the keypool or can generate new keys */
     bool CanGetAddresses(bool internal = false);
 
-    /* Generates a new HD seed (will not be activated) */
-    CPubKey GenerateNewSeed();
-
-    /* Derives a new HD seed (will not be activated) */
-    CPubKey DeriveNewSeed(const CKey& key);
-
-    /* Set the current HD seed (will reset the chain child index counters)
-       Sets the seed's version based on the current wallet version (so the
-       caller must ensure the current wallet version is correct before calling
-       this function). */
-    void SetHDSeed(const CPubKey& key);
-
     /**
      * Blocks until the wallet state is up-to-date to /at least/ the current
      * chain at the time this function is entered
@@ -1232,35 +1089,21 @@ public:
      */
     void BlockUntilSyncedToCurrentChain() LOCKS_EXCLUDED(cs_main, cs_wallet);
 
-    /**
-     * Explicitly make the wallet learn the related scripts for outputs to the
-     * given key. This is purely to make the wallet file compatible with older
-     * software, as FillableSigningProvider automatically does this implicitly for all
-     * keys now.
-     */
-    void LearnRelatedScripts(const CPubKey& key, OutputType);
-
-    /**
-     * Same as LearnRelatedScripts, but when the OutputType is not known (and could
-     * be anything).
-     */
-    void LearnAllRelatedScripts(const CPubKey& key);
-
     /** set a single wallet flag */
-    void SetWalletFlag(uint64_t flags);
+    void SetWalletFlag(uint64_t flags) override;
 
     /** Unsets a single wallet flag */
     void UnsetWalletFlag(uint64_t flag);
 
     /** check if a certain wallet flag is set */
-    bool IsWalletFlagSet(uint64_t flag) const;
+    bool IsWalletFlagSet(uint64_t flag) const override;
 
     /** overwrite all flags by the given uint64_t
        returns false if unknown, non-tolerable flags are present */
     bool SetWalletFlags(uint64_t overwriteFlags, bool memOnly);
 
     /** Returns a bracketed wallet name for displaying in logs, will return [default wallet] if the wallet has no name */
-    const std::string GetDisplayName() const {
+    const std::string GetDisplayName() const override {
         std::string wallet_name = GetName().length() == 0 ? "default wallet" : GetName();
         return strprintf("[%s]", wallet_name);
     };
@@ -1271,8 +1114,28 @@ public:
         LogPrintf(("%s " + fmt).c_str(), GetDisplayName(), parameters...);
     };
 
-    /** Implement lookup of key origin information through wallet key metadata. */
-    bool GetKeyOrigin(const CKeyID& keyid, KeyOriginInfo& info) const override;
+    ScriptPubKeyMan* GetScriptPubKeyMan() const;
+    const SigningProvider* GetSigningProvider() const;
+    LegacyScriptPubKeyMan* GetLegacyScriptPubKeyMan() const;
+
+    // Temporary LegacyScriptPubKeyMan accessors and aliases.
+    friend class LegacyScriptPubKeyMan;
+    std::unique_ptr<LegacyScriptPubKeyMan> m_spk_man = MakeUnique<LegacyScriptPubKeyMan>(*this);
+    CCriticalSection& cs_KeyStore = m_spk_man->cs_KeyStore;
+    LegacyScriptPubKeyMan::KeyMap& mapKeys GUARDED_BY(cs_KeyStore) = m_spk_man->mapKeys;
+    LegacyScriptPubKeyMan::ScriptMap& mapScripts GUARDED_BY(cs_KeyStore) = m_spk_man->mapScripts;
+    LegacyScriptPubKeyMan::CryptedKeyMap& mapCryptedKeys GUARDED_BY(cs_KeyStore) = m_spk_man->mapCryptedKeys;
+    LegacyScriptPubKeyMan::WatchOnlySet& setWatchOnly GUARDED_BY(cs_KeyStore) = m_spk_man->setWatchOnly;
+    LegacyScriptPubKeyMan::WatchKeyMap& mapWatchKeys GUARDED_BY(cs_KeyStore) = m_spk_man->mapWatchKeys;
+    WalletBatch*& encrypted_batch GUARDED_BY(cs_wallet) = m_spk_man->encrypted_batch;
+    std::set<int64_t>& setInternalKeyPool GUARDED_BY(cs_wallet) = m_spk_man->setInternalKeyPool;
+    std::set<int64_t>& setExternalKeyPool GUARDED_BY(cs_wallet) = m_spk_man->setExternalKeyPool;
+    int64_t& nTimeFirstKey GUARDED_BY(cs_wallet) = m_spk_man->nTimeFirstKey;
+    std::map<CKeyID, CKeyMetadata>& mapKeyMetadata GUARDED_BY(cs_wallet) = m_spk_man->mapKeyMetadata;
+    std::map<CScriptID, CKeyMetadata>& m_script_metadata GUARDED_BY(cs_wallet) = m_spk_man->m_script_metadata;
+    void MarkPreSplitKeys() EXCLUSIVE_LOCKS_REQUIRED(cs_wallet) { AssertLockHeld(m_spk_man->cs_wallet); m_spk_man->MarkPreSplitKeys(); }
+    void MarkReserveKeysAsUsed(int64_t keypool_id) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet) { AssertLockHeld(m_spk_man->cs_wallet); m_spk_man->MarkReserveKeysAsUsed(keypool_id); }
+    using CryptedKeyMap = LegacyScriptPubKeyMan::CryptedKeyMap;
 };
 
 /**
diff --git a/src/wallet/walletdb.cpp b/src/wallet/walletdb.cpp
index edd8bab9ae..2ba7cdac36 100644
--- a/src/wallet/walletdb.cpp
+++ b/src/wallet/walletdb.cpp
@@ -12,7 +12,6 @@
 #include <sync.h>
 #include <util/system.h>
 #include <util/time.h>
-#include <wallet/scriptpubkeyman.h>
 #include <wallet/wallet.h>
 
 #include <atomic>
@@ -197,7 +196,7 @@ public:
 
 static bool
 ReadKeyValue(CWallet* pwallet, CDataStream& ssKey, CDataStream& ssValue,
-             CWalletScanState &wss, std::string& strType, std::string& strErr) EXCLUSIVE_LOCKS_REQUIRED(pwallet->cs_wallet)
+             CWalletScanState &wss, std::string& strType, std::string& strErr) EXCLUSIVE_LOCKS_REQUIRED(pwallet->cs_wallet, pwallet->GetLegacyScriptPubKeyMan()->cs_wallet)
 {
     try {
         // Unserialize
@@ -251,8 +250,9 @@ ReadKeyValue(CWallet* pwallet, CDataStream& ssKey, CDataStream& ssValue,
             ssKey >> script;
             char fYes;
             ssValue >> fYes;
-            if (fYes == '1')
-                pwallet->LoadWatchOnly(script);
+            if (fYes == '1') {
+                pwallet->GetLegacyScriptPubKeyMan()->LoadWatchOnly(script);
+            }
         } else if (strType == DBKeys::KEY) {
             CPubKey vchPubKey;
             ssKey >> vchPubKey;
@@ -303,12 +303,13 @@ ReadKeyValue(CWallet* pwallet, CDataStream& ssKey, CDataStream& ssValue,
                 strErr = "Error reading wallet database: CPrivKey corrupt";
                 return false;
             }
-            if (!pwallet->LoadKey(key, vchPubKey))
+            if (!pwallet->GetLegacyScriptPubKeyMan()->LoadKey(key, vchPubKey))
             {
-                strErr = "Error reading wallet database: LoadKey failed";
+                strErr = "Error reading wallet database: LegacyScriptPubKeyMan::LoadKey failed";
                 return false;
             }
         } else if (strType == DBKeys::MASTER_KEY) {
+            // Master encryption key is loaded into only the wallet and not any of the ScriptPubKeyMans.
             unsigned int nID;
             ssKey >> nID;
             CMasterKey kMasterKey;
@@ -333,9 +334,9 @@ ReadKeyValue(CWallet* pwallet, CDataStream& ssKey, CDataStream& ssValue,
             ssValue >> vchPrivKey;
             wss.nCKeys++;
 
-            if (!pwallet->LoadCryptedKey(vchPubKey, vchPrivKey))
+            if (!pwallet->GetLegacyScriptPubKeyMan()->LoadCryptedKey(vchPubKey, vchPrivKey))
             {
-                strErr = "Error reading wallet database: LoadCryptedKey failed";
+                strErr = "Error reading wallet database: LegacyScriptPubKeyMan::LoadCryptedKey failed";
                 return false;
             }
             wss.fIsEncrypted = true;
@@ -345,14 +346,14 @@ ReadKeyValue(CWallet* pwallet, CDataStream& ssKey, CDataStream& ssValue,
             CKeyMetadata keyMeta;
             ssValue >> keyMeta;
             wss.nKeyMeta++;
-            pwallet->LoadKeyMetadata(vchPubKey.GetID(), keyMeta);
+            pwallet->GetLegacyScriptPubKeyMan()->LoadKeyMetadata(vchPubKey.GetID(), keyMeta);
         } else if (strType == DBKeys::WATCHMETA) {
             CScript script;
             ssKey >> script;
             CKeyMetadata keyMeta;
             ssValue >> keyMeta;
             wss.nKeyMeta++;
-            pwallet->LoadScriptMetadata(CScriptID(script), keyMeta);
+            pwallet->GetLegacyScriptPubKeyMan()->LoadScriptMetadata(CScriptID(script), keyMeta);
         } else if (strType == DBKeys::DEFAULTKEY) {
             // We don't want or need the default key, but if there is one set,
             // we want to make sure that it is valid so that we can detect corruption
@@ -368,15 +369,15 @@ ReadKeyValue(CWallet* pwallet, CDataStream& ssKey, CDataStream& ssValue,
             CKeyPool keypool;
             ssValue >> keypool;
 
-            pwallet->LoadKeyPool(nIndex, keypool);
+            pwallet->GetLegacyScriptPubKeyMan()->LoadKeyPool(nIndex, keypool);
         } else if (strType == DBKeys::CSCRIPT) {
             uint160 hash;
             ssKey >> hash;
             CScript script;
             ssValue >> script;
-            if (!pwallet->LoadCScript(script))
+            if (!pwallet->GetLegacyScriptPubKeyMan()->LoadCScript(script))
             {
-                strErr = "Error reading wallet database: LoadCScript failed";
+                strErr = "Error reading wallet database: LegacyScriptPubKeyMan::LoadCScript failed";
                 return false;
             }
         } else if (strType == DBKeys::ORDERPOSNEXT) {
@@ -390,7 +391,7 @@ ReadKeyValue(CWallet* pwallet, CDataStream& ssKey, CDataStream& ssValue,
         } else if (strType == DBKeys::HDCHAIN) {
             CHDChain chain;
             ssValue >> chain;
-            pwallet->SetHDChain(chain, true);
+            pwallet->GetLegacyScriptPubKeyMan()->SetHDChain(chain, true);
         } else if (strType == DBKeys::FLAGS) {
             uint64_t flags;
             ssValue >> flags;
@@ -433,6 +434,7 @@ DBErrors WalletBatch::LoadWallet(CWallet* pwallet)
     DBErrors result = DBErrors::LOAD_OK;
 
     LOCK(pwallet->cs_wallet);
+    AssertLockHeld(pwallet->GetLegacyScriptPubKeyMan()->cs_wallet);
     try {
         int nMinVersion = 0;
         if (m_batch.Read(DBKeys::MINVERSION, nMinVersion)) {
@@ -513,8 +515,12 @@ DBErrors WalletBatch::LoadWallet(CWallet* pwallet)
            wss.nKeys, wss.nCKeys, wss.nKeyMeta, wss.nKeys + wss.nCKeys, wss.m_unknown_records);
 
     // nTimeFirstKey is only reliable if all keys have metadata
-    if ((wss.nKeys + wss.nCKeys + wss.nWatchKeys) != wss.nKeyMeta)
-        pwallet->UpdateTimeFirstKey(1);
+    if ((wss.nKeys + wss.nCKeys + wss.nWatchKeys) != wss.nKeyMeta) {
+        auto spk_man = pwallet->GetLegacyScriptPubKeyMan();
+        if (spk_man) {
+            spk_man->UpdateTimeFirstKey(1);
+        }
+    }
 
     for (const uint256& hash : wss.vWalletUpgrade)
         WriteTx(pwallet->mapWallet.at(hash));
@@ -707,6 +713,7 @@ bool WalletBatch::RecoverKeysOnlyFilter(void *callbackData, CDataStream ssKey, C
     {
         // Required in LoadKeyMetadata():
         LOCK(dummyWallet->cs_wallet);
+        AssertLockHeld(dummyWallet->GetLegacyScriptPubKeyMan()->cs_wallet);
         fReadOK = ReadKeyValue(dummyWallet, ssKey, ssValue,
                                dummyWss, strType, strErr);
     }
diff --git a/src/wallet/wallettool.cpp b/src/wallet/wallettool.cpp
index 0843194511..a6f49536b7 100644
--- a/src/wallet/wallettool.cpp
+++ b/src/wallet/wallettool.cpp
@@ -37,8 +37,9 @@ static std::shared_ptr<CWallet> CreateWallet(const std::string& name, const fs::
     wallet_instance->SetMinVersion(FEATURE_HD_SPLIT);
 
     // generate a new HD seed
-    CPubKey seed = wallet_instance->GenerateNewSeed();
-    wallet_instance->SetHDSeed(seed);
+    auto spk_man = wallet_instance->GetLegacyScriptPubKeyMan();
+    CPubKey seed = spk_man->GenerateNewSeed();
+    spk_man->SetHDSeed(seed);
 
     tfm::format(std::cout, "Topping up keypool...\n");
     wallet_instance->TopUpKeyPool();
@@ -94,7 +95,7 @@ static void WalletShowInfo(CWallet* wallet_instance)
 
     tfm::format(std::cout, "Wallet info\n===========\n");
     tfm::format(std::cout, "Encrypted: %s\n", wallet_instance->IsCrypted() ? "yes" : "no");
-    tfm::format(std::cout, "HD (hd seed available): %s\n", wallet_instance->GetHDChain().seed_id.IsNull() ? "no" : "yes");
+    tfm::format(std::cout, "HD (hd seed available): %s\n", wallet_instance->IsHDEnabled() ? "yes" : "no");
     tfm::format(std::cout, "Keypool Size: %u\n", wallet_instance->GetKeyPoolSize());
     tfm::format(std::cout, "Transactions: %zu\n", wallet_instance->mapWallet.size());
     tfm::format(std::cout, "Address Book: %zu\n", wallet_instance->mapAddressBook.size());
diff --git a/test/lint/lint-circular-dependencies.sh b/test/lint/lint-circular-dependencies.sh
index 8607fc4371..ccd12b5823 100755
--- a/test/lint/lint-circular-dependencies.sh
+++ b/test/lint/lint-circular-dependencies.sh
@@ -30,7 +30,7 @@ EXPECTED_CIRCULAR_DEPENDENCIES=(
     "policy/fees -> txmempool -> validation -> policy/fees"
     "qt/guiutil -> qt/walletmodel -> qt/optionsmodel -> qt/guiutil"
     "txmempool -> validation -> validationinterface -> txmempool"
-    "wallet/ismine -> wallet/wallet -> wallet/ismine"
+    "wallet/scriptpubkeyman -> wallet/wallet -> wallet/scriptpubkeyman"
 )
 
 EXIT_CODE=0
diff --git a/test/lint/lint-format-strings.py b/test/lint/lint-format-strings.py
index 9f34d0f4dd..99127e01f8 100755
--- a/test/lint/lint-format-strings.py
+++ b/test/lint/lint-format-strings.py
@@ -20,6 +20,9 @@ FALSE_POSITIVES = [
     ("src/wallet/wallet.h",  "WalletLogPrintf(std::string fmt, Params... parameters)"),
     ("src/wallet/wallet.h", "LogPrintf((\"%s \" + fmt).c_str(), GetDisplayName(), parameters...)"),
     ("src/logging.h", "LogPrintf(const char* fmt, const Args&... args)"),
+    ("src/wallet/scriptpubkeyman.h", "WalletLogPrintf(const std::string& fmt, const Params&... parameters)"),
+    ("src/wallet/scriptpubkeyman.cpp", "WalletLogPrintf(fmt, parameters...)"),
+    ("src/wallet/scriptpubkeyman.cpp", "WalletLogPrintf(const std::string& fmt, const Params&... parameters)"),
 ]
 
 
diff --git a/test/lint/lint-logs.sh b/test/lint/lint-logs.sh
index 632ed7c812..72b6b2e9d5 100755
--- a/test/lint/lint-logs.sh
+++ b/test/lint/lint-logs.sh
@@ -15,6 +15,7 @@
 export LC_ALL=C
 UNTERMINATED_LOGS=$(git grep --extended-regexp "LogPrintf?\(" -- "*.cpp" | \
     grep -v '\\n"' | \
+    grep -v '\.\.\.' | \
     grep -v "/\* Continued \*/" | \
     grep -v "LogPrint()" | \
     grep -v "LogPrintf()")