[wallet] Kill accounts

This commit does the following changes:

- [wallet] Remove 'account' argument from GetLegacyBalance()
  - GetLegacyBalance() is never called with an account argument.
    Remove the argument and helper functions.
- [wallet] Remove CWallet::ListAccountCreditDebit()
  - Function no longer used.
- [wallet] Remove AccountMove()
  - Function no longer used.
- [wallet] Remove AddAccountingEntry()
  - Function no longer used.
- [wallet] Remove GetAccountCreditDebit()
  - Function no longer used.
- [wallet] Don't rewrite accounting entries when reordering wallet transactions.
 - Accounting entries are deprecated. Don't rewrite them to the wallet
   database when re-ordering transactions.
- [wallet] Remove WriteAccountingEntry()
  - Function no longer used.
- [wallet] Don't read acentry key-values from wallet on load.
- [wallet] Remove ListAccountCreditDebit()
  - Function no longer used.
- [wallet] Remove CAccountingEntry class
  - No longer used
- [wallet] Remove GetLabelDestination
  - Function no longer used.
- [wallet] Delete unused account functions
  - ReadAccount
  - WriteAccount
  - EraseAccount
  - DeleteLabel
- [wallet] Remove fromAccount argument from CommitTransaction()
- [wallet] Remove strFromAccount.
  - No longer used.
- [wallet] Remove strSentAccount from GetAmounts().
  - No longer used.
- [wallet] Update zapwallettxes comment to remove accounts.
- [wallet] Remove CAccount
  - No longer used
- [docs] fix typo in release notes for PR 14023

12 files changed, 45 insertions, 447 deletions

diff --git a/doc/release-notes-14023.md b/doc/release-notes-14023.md
index b23c11268b..18ea6f26d0 100644
--- a/doc/release-notes-14023.md
+++ b/doc/release-notes-14023.md
@@ -1,5 +1,5 @@
-Accout API removed
-------------------
+Account API removed
+-------------------
 
 The 'account' API was deprecated in v0.17 and has been fully removed in v0.18.
 The 'label' API was introduced in v0.17 as a replacement for accounts.
diff --git a/src/interfaces/wallet.cpp b/src/interfaces/wallet.cpp
index 703c0811ac..2281f99194 100644
--- a/src/interfaces/wallet.cpp
+++ b/src/interfaces/wallet.cpp
@@ -39,12 +39,11 @@ public:
 
     bool commit(WalletValueMap value_map,
         WalletOrderForm order_form,
-        std::string from_account,
         std::string& reject_reason) override
     {
         LOCK2(cs_main, m_wallet.cs_wallet);
         CValidationState state;
-        if (!m_wallet.CommitTransaction(m_tx, std::move(value_map), std::move(order_form), std::move(from_account), m_key, g_connman.get(), state)) {
+        if (!m_wallet.CommitTransaction(m_tx, std::move(value_map), std::move(order_form), m_key, g_connman.get(), state)) {
             reject_reason = state.GetRejectReason();
             return false;
         }
diff --git a/src/interfaces/wallet.h b/src/interfaces/wallet.h
index ae54d42442..44240a5726 100644
--- a/src/interfaces/wallet.h
+++ b/src/interfaces/wallet.h
@@ -289,7 +289,6 @@ public:
     //! Send pending transaction and commit to wallet.
     virtual bool commit(WalletValueMap value_map,
         WalletOrderForm order_form,
-        std::string from_account,
         std::string& reject_reason) = 0;
 };
 
diff --git a/src/qt/walletmodel.cpp b/src/qt/walletmodel.cpp
index 18a5bda9c3..f7cc94ae32 100644
--- a/src/qt/walletmodel.cpp
+++ b/src/qt/walletmodel.cpp
@@ -253,7 +253,7 @@ WalletModel::SendCoinsReturn WalletModel::sendCoins(WalletModelTransaction &tran
 
         auto& newTx = transaction.getWtx();
         std::string rejectReason;
-        if (!newTx->commit({} /* mapValue */, std::move(vOrderForm), {} /* fromAccount */, rejectReason))
+        if (!newTx->commit({} /* mapValue */, std::move(vOrderForm), rejectReason))
             return SendCoinsReturn(TransactionCommitFailed, QString::fromStdString(rejectReason));
 
         CDataStream ssTx(SER_NETWORK, PROTOCOL_VERSION);
diff --git a/src/wallet/feebumper.cpp b/src/wallet/feebumper.cpp
index 2b8a0f6467..677bf74b5d 100644
--- a/src/wallet/feebumper.cpp
+++ b/src/wallet/feebumper.cpp
@@ -242,7 +242,7 @@ Result CommitTransaction(CWallet* wallet, const uint256& txid, CMutableTransacti
 
     CReserveKey reservekey(wallet);
     CValidationState state;
-    if (!wallet->CommitTransaction(tx, std::move(mapValue), oldWtx.vOrderForm, oldWtx.strFromAccount, reservekey, g_connman.get(), state)) {
+    if (!wallet->CommitTransaction(tx, std::move(mapValue), oldWtx.vOrderForm, reservekey, g_connman.get(), state)) {
         // NOTE: CommitTransaction never returns false, so this should never happen.
         errors.push_back(strprintf("The transaction was rejected: %s", FormatStateMessage(state)));
         return Result::WALLET_ERROR;
diff --git a/src/wallet/init.cpp b/src/wallet/init.cpp
index b9f267210e..b36287ff50 100644
--- a/src/wallet/init.cpp
+++ b/src/wallet/init.cpp
@@ -78,7 +78,7 @@ void WalletInit::AddWalletOptions() const
     gArgs.AddArg("-walletnotify=<cmd>", "Execute command when a wallet transaction changes (%s in cmd is replaced by TxID)", false, OptionsCategory::WALLET);
     gArgs.AddArg("-walletrbf", strprintf("Send transactions with full-RBF opt-in enabled (RPC only, default: %u)", DEFAULT_WALLET_RBF), false, OptionsCategory::WALLET);
     gArgs.AddArg("-zapwallettxes=<mode>", "Delete all wallet transactions and only recover those parts of the blockchain through -rescan on startup"
-                               " (1 = keep tx meta data e.g. account owner and payment request information, 2 = drop tx meta data)", false, OptionsCategory::WALLET);
+                               " (1 = keep tx meta data e.g. payment request information, 2 = drop tx meta data)", false, OptionsCategory::WALLET);
 
     gArgs.AddArg("-dblogsize=<n>", strprintf("Flush wallet database activity from memory to disk log every <n> megabytes (default: %u)", DEFAULT_WALLET_DBLOGSIZE), true, OptionsCategory::WALLET_DEBUG_TEST);
     gArgs.AddArg("-flushwallet", strprintf("Run a thread to flush wallet periodically (default: %u)", DEFAULT_FLUSHWALLET), true, OptionsCategory::WALLET_DEBUG_TEST);
diff --git a/src/wallet/rpcwallet.cpp b/src/wallet/rpcwallet.cpp
index c82c914e1e..76d4d55936 100644
--- a/src/wallet/rpcwallet.cpp
+++ b/src/wallet/rpcwallet.cpp
@@ -196,16 +196,6 @@ static UniValue getnewaddress(const JSONRPCRequest& request)
     return EncodeDestination(dest);
 }
 
-CTxDestination GetLabelDestination(CWallet* const pwallet, const std::string& label, bool bForceNew=false)
-{
-    CTxDestination dest;
-    if (!pwallet->GetLabelDestination(dest, label, bForceNew)) {
-        throw JSONRPCError(RPC_WALLET_KEYPOOL_RAN_OUT, "Error: Keypool ran out, please call keypoolrefill first");
-    }
-
-    return dest;
-}
-
 static UniValue getrawchangeaddress(const JSONRPCRequest& request)
 {
     std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
@@ -297,20 +287,6 @@ static UniValue setlabel(const JSONRPCRequest& request)
         pwallet->SetAddressBook(dest, label, "send");
     }
 
-    // Detect when there are no addresses using this label.
-    // If so, delete the account record for it. Labels, unlike addresses, can be deleted,
-    // and if we wouldn't do this, the record would stick around forever.
-    bool found_address = false;
-    for (const std::pair<const CTxDestination, CAddressBookData>& item : pwallet->mapAddressBook) {
-        if (item.second.name == label) {
-            found_address = true;
-            break;
-        }
-    }
-    if (!found_address) {
-        pwallet->DeleteLabel(old_label);
-    }
-
     return NullUniValue;
 }
 
@@ -348,7 +324,7 @@ static CTransactionRef SendMoney(CWallet * const pwallet, const CTxDestination &
         throw JSONRPCError(RPC_WALLET_ERROR, strError);
     }
     CValidationState state;
-    if (!pwallet->CommitTransaction(tx, std::move(mapValue), {} /* orderForm */, "" /* account */, reservekey, g_connman.get(), state)) {
+    if (!pwallet->CommitTransaction(tx, std::move(mapValue), {} /* orderForm */, reservekey, g_connman.get(), state)) {
         strError = strprintf("Error: The transaction was rejected! Reason given: %s", FormatStateMessage(state));
         throw JSONRPCError(RPC_WALLET_ERROR, strError);
     }
@@ -904,7 +880,7 @@ static UniValue sendmany(const JSONRPCRequest& request)
     EnsureWalletIsUnlocked(pwallet);
 
     // Check funds
-    if (totalAmount > pwallet->GetLegacyBalance(ISMINE_SPENDABLE, nMinDepth, nullptr)) {
+    if (totalAmount > pwallet->GetLegacyBalance(ISMINE_SPENDABLE, nMinDepth)) {
         throw JSONRPCError(RPC_WALLET_INSUFFICIENT_FUNDS, "Wallet has insufficient funds");
     }
 
@@ -921,7 +897,7 @@ static UniValue sendmany(const JSONRPCRequest& request)
     if (!fCreated)
         throw JSONRPCError(RPC_WALLET_INSUFFICIENT_FUNDS, strFailReason);
     CValidationState state;
-    if (!pwallet->CommitTransaction(tx, std::move(mapValue), {} /* orderForm */, "" /* account */, keyChange, g_connman.get(), state)) {
+    if (!pwallet->CommitTransaction(tx, std::move(mapValue), {} /* orderForm */, keyChange, g_connman.get(), state)) {
         strFailReason = strprintf("Transaction commit failed:: %s", FormatStateMessage(state));
         throw JSONRPCError(RPC_WALLET_ERROR, strFailReason);
     }
@@ -1404,11 +1380,10 @@ static void MaybePushAddress(UniValue & entry, const CTxDestination &dest)
 static void ListTransactions(CWallet* const pwallet, const CWalletTx& wtx, int nMinDepth, bool fLong, UniValue& ret, const isminefilter& filter) EXCLUSIVE_LOCKS_REQUIRED(cs_main)
 {
     CAmount nFee;
-    std::string dummy_account;
     std::list<COutputEntry> listReceived;
     std::list<COutputEntry> listSent;
 
-    wtx.GetAmounts(listReceived, listSent, nFee, dummy_account, filter);
+    wtx.GetAmounts(listReceived, listSent, nFee, filter);
 
     bool involvesWatchonly = wtx.IsFromMe(ISMINE_WATCH_ONLY);
 
@@ -1563,10 +1538,8 @@ UniValue listtransactions(const JSONRPCRequest& request)
         // iterate backwards until we have nCount items to return:
         for (CWallet::TxItems::const_reverse_iterator it = txOrdered.rbegin(); it != txOrdered.rend(); ++it)
         {
-            CWalletTx *const pwtx = (*it).second.first;
-            if (pwtx != nullptr) {
-                ListTransactions(pwallet, *pwtx, 0, true, ret, filter);
-            }
+            CWalletTx *const pwtx = (*it).second;
+            ListTransactions(pwallet, *pwtx, 0, true, ret, filter);
             if ((int)ret.size() >= (nCount+nFrom)) break;
         }
     }
diff --git a/src/wallet/test/wallet_tests.cpp b/src/wallet/test/wallet_tests.cpp
index f44311b0be..b436efc276 100644
--- a/src/wallet/test/wallet_tests.cpp
+++ b/src/wallet/test/wallet_tests.cpp
@@ -297,7 +297,7 @@ public:
         CCoinControl dummy;
         BOOST_CHECK(wallet->CreateTransaction({recipient}, tx, reservekey, fee, changePos, error, dummy));
         CValidationState state;
-        BOOST_CHECK(wallet->CommitTransaction(tx, {}, {}, {}, reservekey, nullptr, state));
+        BOOST_CHECK(wallet->CommitTransaction(tx, {}, {}, reservekey, nullptr, state));
         CMutableTransaction blocktx;
         {
             LOCK(wallet->cs_wallet);
diff --git a/src/wallet/wallet.cpp b/src/wallet/wallet.cpp
index d0857bcb72..d29c0e27b2 100644
--- a/src/wallet/wallet.cpp
+++ b/src/wallet/wallet.cpp
@@ -585,7 +585,6 @@ void CWallet::SyncMetaData(std::pair<TxSpends::iterator, TxSpends::iterator> ran
         // nTimeReceived not copied on purpose
         copyTo->nTimeSmart = copyFrom->nTimeSmart;
         copyTo->fFromMe = copyFrom->fFromMe;
-        copyTo->strFromAccount = copyFrom->strFromAccount;
         // nOrderPos not copied on purpose
         // cached members not copied on purpose
     }
@@ -735,44 +734,30 @@ DBErrors CWallet::ReorderTransactions()
     // Old wallets didn't have any defined order for transactions
     // Probably a bad idea to change the output of this
 
-    // First: get all CWalletTx and CAccountingEntry into a sorted-by-time multimap.
-    typedef std::pair<CWalletTx*, CAccountingEntry*> TxPair;
-    typedef std::multimap<int64_t, TxPair > TxItems;
+    // First: get all CWalletTx into a sorted-by-time multimap.
+    typedef std::multimap<int64_t, CWalletTx*> TxItems;
     TxItems txByTime;
 
     for (auto& entry : mapWallet)
     {
         CWalletTx* wtx = &entry.second;
-        txByTime.insert(std::make_pair(wtx->nTimeReceived, TxPair(wtx, nullptr)));
-    }
-    std::list<CAccountingEntry> acentries;
-    batch.ListAccountCreditDebit("", acentries);
-    for (CAccountingEntry& entry : acentries)
-    {
-        txByTime.insert(std::make_pair(entry.nTime, TxPair(nullptr, &entry)));
+        txByTime.insert(std::make_pair(wtx->nTimeReceived, wtx));
     }
 
     nOrderPosNext = 0;
     std::vector<int64_t> nOrderPosOffsets;
     for (TxItems::iterator it = txByTime.begin(); it != txByTime.end(); ++it)
     {
-        CWalletTx *const pwtx = (*it).second.first;
-        CAccountingEntry *const pacentry = (*it).second.second;
-        int64_t& nOrderPos = (pwtx != nullptr) ? pwtx->nOrderPos : pacentry->nOrderPos;
+        CWalletTx *const pwtx = (*it).second;
+        int64_t& nOrderPos = pwtx->nOrderPos;
 
         if (nOrderPos == -1)
         {
             nOrderPos = nOrderPosNext++;
             nOrderPosOffsets.push_back(nOrderPos);
 
-            if (pwtx)
-            {
-                if (!batch.WriteTx(*pwtx))
-                    return DBErrors::LOAD_FAIL;
-            }
-            else
-                if (!batch.WriteAccountingEntry(pacentry->nEntryNo, *pacentry))
-                    return DBErrors::LOAD_FAIL;
+            if (!batch.WriteTx(*pwtx))
+                return DBErrors::LOAD_FAIL;
         }
         else
         {
@@ -789,14 +774,8 @@ DBErrors CWallet::ReorderTransactions()
                 continue;
 
             // Since we're changing the order, write it back
-            if (pwtx)
-            {
-                if (!batch.WriteTx(*pwtx))
-                    return DBErrors::LOAD_FAIL;
-            }
-            else
-                if (!batch.WriteAccountingEntry(pacentry->nEntryNo, *pacentry))
-                    return DBErrors::LOAD_FAIL;
+            if (!batch.WriteTx(*pwtx))
+                return DBErrors::LOAD_FAIL;
         }
     }
     batch.WriteOrderPosNext(nOrderPosNext);
@@ -816,80 +795,6 @@ int64_t CWallet::IncOrderPosNext(WalletBatch *batch)
     return nRet;
 }
 
-bool CWallet::AccountMove(std::string strFrom, std::string strTo, CAmount nAmount, std::string strComment)
-{
-    WalletBatch batch(*database);
-    if (!batch.TxnBegin())
-        return false;
-
-    int64_t nNow = GetAdjustedTime();
-
-    // Debit
-    CAccountingEntry debit;
-    debit.nOrderPos = IncOrderPosNext(&batch);
-    debit.strAccount = strFrom;
-    debit.nCreditDebit = -nAmount;
-    debit.nTime = nNow;
-    debit.strOtherAccount = strTo;
-    debit.strComment = strComment;
-    AddAccountingEntry(debit, &batch);
-
-    // Credit
-    CAccountingEntry credit;
-    credit.nOrderPos = IncOrderPosNext(&batch);
-    credit.strAccount = strTo;
-    credit.nCreditDebit = nAmount;
-    credit.nTime = nNow;
-    credit.strOtherAccount = strFrom;
-    credit.strComment = strComment;
-    AddAccountingEntry(credit, &batch);
-
-    if (!batch.TxnCommit())
-        return false;
-
-    return true;
-}
-
-bool CWallet::GetLabelDestination(CTxDestination &dest, const std::string& label, bool bForceNew)
-{
-    WalletBatch batch(*database);
-
-    CAccount account;
-    batch.ReadAccount(label, account);
-
-    if (!bForceNew) {
-        if (!account.vchPubKey.IsValid())
-            bForceNew = true;
-        else {
-            // Check if the current key has been used (TODO: check other addresses with the same key)
-            CScript scriptPubKey = GetScriptForDestination(GetDestinationForKey(account.vchPubKey, m_default_address_type));
-            for (std::map<uint256, CWalletTx>::iterator it = mapWallet.begin();
-                 it != mapWallet.end() && account.vchPubKey.IsValid();
-                 ++it)
-                for (const CTxOut& txout : (*it).second.tx->vout)
-                    if (txout.scriptPubKey == scriptPubKey) {
-                        bForceNew = true;
-                        break;
-                    }
-        }
-    }
-
-    // Generate a new key
-    if (bForceNew) {
-        if (!GetKeyFromPool(account.vchPubKey, false))
-            return false;
-
-        LearnRelatedScripts(account.vchPubKey, m_default_address_type);
-        dest = GetDestinationForKey(account.vchPubKey, m_default_address_type);
-        SetAddressBook(dest, label, "receive");
-        batch.WriteAccount(label, account);
-    } else {
-        dest = GetDestinationForKey(account.vchPubKey, m_default_address_type);
-    }
-
-    return true;
-}
-
 void CWallet::MarkDirty()
 {
     {
@@ -944,7 +849,7 @@ bool CWallet::AddToWallet(const CWalletTx& wtxIn, bool fFlushOnClose)
     if (fInsertedNew) {
         wtx.nTimeReceived = GetAdjustedTime();
         wtx.nOrderPos = IncOrderPosNext(&batch);
-        wtx.m_it_wtxOrdered = wtxOrdered.insert(std::make_pair(wtx.nOrderPos, TxPair(&wtx, nullptr)));
+        wtx.m_it_wtxOrdered = wtxOrdered.insert(std::make_pair(wtx.nOrderPos, &wtx));
         wtx.nTimeSmart = ComputeTimeSmart(wtx);
         AddToSpends(hash);
     }
@@ -1019,7 +924,7 @@ void CWallet::LoadToWallet(const CWalletTx& wtxIn)
     CWalletTx& wtx = ins.first->second;
     wtx.BindWallet(this);
     if (/* insertion took place */ ins.second) {
-        wtx.m_it_wtxOrdered = wtxOrdered.insert(std::make_pair(wtx.nOrderPos, TxPair(&wtx, nullptr)));
+        wtx.m_it_wtxOrdered = wtxOrdered.insert(std::make_pair(wtx.nOrderPos, &wtx));
     }
     AddToSpends(hash);
     for (const CTxIn& txin : wtx.tx->vin) {
@@ -1615,12 +1520,11 @@ int CalculateMaximumSignedInputSize(const CTxOut& txout, const CWallet* wallet,
 }
 
 void CWalletTx::GetAmounts(std::list<COutputEntry>& listReceived,
-                           std::list<COutputEntry>& listSent, CAmount& nFee, std::string& strSentAccount, const isminefilter& filter) const
+                           std::list<COutputEntry>& listSent, CAmount& nFee, const isminefilter& filter) const
 {
     nFee = 0;
     listReceived.clear();
     listSent.clear();
-    strSentAccount = strFromAccount;
 
     // Compute fee:
     CAmount nDebit = GetDebit(filter);
@@ -2189,7 +2093,7 @@ CAmount CWallet::GetImmatureWatchOnlyBalance() const
 // wallet, and then subtracts the values of TxIns spending from the wallet. This
 // also has fewer restrictions on which unconfirmed transactions are considered
 // trusted.
-CAmount CWallet::GetLegacyBalance(const isminefilter& filter, int minDepth, const std::string* account) const
+CAmount CWallet::GetLegacyBalance(const isminefilter& filter, int minDepth) const
 {
     LOCK2(cs_main, cs_wallet);
 
@@ -2208,21 +2112,17 @@ CAmount CWallet::GetLegacyBalance(const isminefilter& filter, int minDepth, cons
         for (const CTxOut& out : wtx.tx->vout) {
             if (outgoing && IsChange(out)) {
                 debit -= out.nValue;
-            } else if (IsMine(out) & filter && depth >= minDepth && (!account || *account == GetLabelName(out.scriptPubKey))) {
+            } else if (IsMine(out) & filter && depth >= minDepth) {
                 balance += out.nValue;
             }
         }
 
         // For outgoing txs, subtract amount debited.
-        if (outgoing && (!account || *account == wtx.strFromAccount)) {
+        if (outgoing) {
             balance -= debit;
         }
     }
 
-    if (account) {
-        balance += WalletBatch(*database).GetAccountCreditDebit(*account);
-    }
-
     return balance;
 }
 
@@ -3054,7 +2954,7 @@ bool CWallet::CreateTransaction(const std::vector<CRecipient>& vecSend, CTransac
 /**
  * Call after CreateTransaction unless you want to abort
  */
-bool CWallet::CommitTransaction(CTransactionRef tx, mapValue_t mapValue, std::vector<std::pair<std::string, std::string>> orderForm, std::string fromAccount, CReserveKey& reservekey, CConnman* connman, CValidationState& state)
+bool CWallet::CommitTransaction(CTransactionRef tx, mapValue_t mapValue, std::vector<std::pair<std::string, std::string>> orderForm, CReserveKey& reservekey, CConnman* connman, CValidationState& state)
 {
     {
         LOCK2(cs_main, cs_wallet);
@@ -3062,7 +2962,6 @@ bool CWallet::CommitTransaction(CTransactionRef tx, mapValue_t mapValue, std::ve
         CWalletTx wtxNew(this, std::move(tx));
         wtxNew.mapValue = std::move(mapValue);
         wtxNew.vOrderForm = std::move(orderForm);
-        wtxNew.strFromAccount = std::move(fromAccount);
         wtxNew.fTimeReceivedIsTxTime = true;
         wtxNew.fFromMe = true;
 
@@ -3102,31 +3001,6 @@ bool CWallet::CommitTransaction(CTransactionRef tx, mapValue_t mapValue, std::ve
     return true;
 }
 
-void CWallet::ListAccountCreditDebit(const std::string& strAccount, std::list<CAccountingEntry>& entries) {
-    WalletBatch batch(*database);
-    return batch.ListAccountCreditDebit(strAccount, entries);
-}
-
-bool CWallet::AddAccountingEntry(const CAccountingEntry& acentry)
-{
-    WalletBatch batch(*database);
-
-    return AddAccountingEntry(acentry, &batch);
-}
-
-bool CWallet::AddAccountingEntry(const CAccountingEntry& acentry, WalletBatch *batch)
-{
-    if (!batch->WriteAccountingEntry(++nAccountingEntryNumber, acentry)) {
-        return false;
-    }
-
-    laccentries.push_back(acentry);
-    CAccountingEntry & entry = laccentries.back();
-    wtxOrdered.insert(std::make_pair(entry.nOrderPos, TxPair(nullptr, &entry)));
-
-    return true;
-}
-
 DBErrors CWallet::LoadWallet(bool& fFirstRunRet)
 {
     LOCK2(cs_main, cs_wallet);
@@ -3660,12 +3534,6 @@ std::set<CTxDestination> CWallet::GetLabelAddresses(const std::string& label) co
     return result;
 }
 
-void CWallet::DeleteLabel(const std::string& label)
-{
-    WalletBatch batch(*database);
-    batch.EraseAccount(label);
-}
-
 bool CReserveKey::GetReservedKey(CPubKey& pubkey, bool internal)
 {
     if (nIndex == -1)
@@ -3856,19 +3724,14 @@ unsigned int CWallet::ComputeTimeSmart(const CWalletTx& wtx) const
             int64_t latestTolerated = latestNow + 300;
             const TxItems& txOrdered = wtxOrdered;
             for (auto it = txOrdered.rbegin(); it != txOrdered.rend(); ++it) {
-                CWalletTx* const pwtx = it->second.first;
+                CWalletTx* const pwtx = it->second;
                 if (pwtx == &wtx) {
                     continue;
                 }
-                CAccountingEntry* const pacentry = it->second.second;
                 int64_t nSmartTime;
-                if (pwtx) {
-                    nSmartTime = pwtx->nTimeSmart;
-                    if (!nSmartTime) {
-                        nSmartTime = pwtx->nTimeReceived;
-                    }
-                } else {
-                    nSmartTime = pacentry->nTime;
+                nSmartTime = pwtx->nTimeSmart;
+                if (!nSmartTime) {
+                    nSmartTime = pwtx->nTimeReceived;
                 }
                 if (nSmartTime <= latestTolerated) {
                     latestEntry = nSmartTime;
@@ -4313,7 +4176,6 @@ std::shared_ptr<CWallet> CWallet::CreateWalletFromFile(const std::string& name,
                     copyTo->nTimeReceived = copyFrom->nTimeReceived;
                     copyTo->nTimeSmart = copyFrom->nTimeSmart;
                     copyTo->fFromMe = copyFrom->fFromMe;
-                    copyTo->strFromAccount = copyFrom->strFromAccount;
                     copyTo->nOrderPos = copyFrom->nOrderPos;
                     batch.WriteTx(*copyTo);
                 }
diff --git a/src/wallet/wallet.h b/src/wallet/wallet.h
index 15062680de..192bdbf370 100644
--- a/src/wallet/wallet.h
+++ b/src/wallet/wallet.h
@@ -340,9 +340,8 @@ public:
      * externally and came in through the network or sendrawtransaction RPC.
      */
     char fFromMe;
-    std::string strFromAccount;
     int64_t nOrderPos; //!< position in ordered transaction list
-    std::multimap<int64_t, std::pair<CWalletTx*, CAccountingEntry*>>::const_iterator m_it_wtxOrdered;
+    std::multimap<int64_t, CWalletTx*>::const_iterator m_it_wtxOrdered;
 
     // memory only
     mutable bool fDebitCached;
@@ -379,7 +378,6 @@ public:
         nTimeReceived = 0;
         nTimeSmart = 0;
         fFromMe = false;
-        strFromAccount.clear();
         fDebitCached = false;
         fCreditCached = false;
         fImmatureCreditCached = false;
@@ -408,7 +406,7 @@ public:
         char fSpent = false;
         mapValue_t mapValueCopy = mapValue;
 
-        mapValueCopy["fromaccount"] = strFromAccount;
+        mapValueCopy["fromaccount"] = "";
         WriteOrderPos(nOrderPos, mapValueCopy);
         if (nTimeSmart) {
             mapValueCopy["timesmart"] = strprintf("%u", nTimeSmart);
@@ -429,7 +427,6 @@ public:
         std::vector<CMerkleTx> vUnused; //!< Used to be vtxPrev
         s >> vUnused >> mapValue >> vOrderForm >> fTimeReceivedIsTxTime >> nTimeReceived >> fFromMe >> fSpent;
 
-        strFromAccount = std::move(mapValue["fromaccount"]);
         ReadOrderPos(nOrderPos, mapValue);
         nTimeSmart = mapValue.count("timesmart") ? (unsigned int)atoi64(mapValue["timesmart"]) : 0;
 
@@ -474,7 +471,7 @@ public:
     }
 
     void GetAmounts(std::list<COutputEntry>& listReceived,
-                    std::list<COutputEntry>& listSent, CAmount& nFee, std::string& strSentAccount, const isminefilter& filter) const;
+                    std::list<COutputEntry>& listSent, CAmount& nFee, const isminefilter& filter) const;
 
     bool IsFromMe(const isminefilter& filter) const
     {
@@ -569,89 +566,6 @@ public:
     }
 };
 
-/**
- * DEPRECATED Internal transfers.
- * Database key is acentry<account><counter>.
- */
-class CAccountingEntry
-{
-public:
-    std::string strAccount;
-    CAmount nCreditDebit;
-    int64_t nTime;
-    std::string strOtherAccount;
-    std::string strComment;
-    mapValue_t mapValue;
-    int64_t nOrderPos; //!< position in ordered transaction list
-    uint64_t nEntryNo;
-
-    CAccountingEntry()
-    {
-        SetNull();
-    }
-
-    void SetNull()
-    {
-        nCreditDebit = 0;
-        nTime = 0;
-        strAccount.clear();
-        strOtherAccount.clear();
-        strComment.clear();
-        nOrderPos = -1;
-        nEntryNo = 0;
-    }
-
-    template <typename Stream>
-    void Serialize(Stream& s) const {
-        int nVersion = s.GetVersion();
-        if (!(s.GetType() & SER_GETHASH)) {
-            s << nVersion;
-        }
-        //! Note: strAccount is serialized as part of the key, not here.
-        s << nCreditDebit << nTime << strOtherAccount;
-
-        mapValue_t mapValueCopy = mapValue;
-        WriteOrderPos(nOrderPos, mapValueCopy);
-
-        std::string strCommentCopy = strComment;
-        if (!mapValueCopy.empty() || !_ssExtra.empty()) {
-            CDataStream ss(s.GetType(), s.GetVersion());
-            ss.insert(ss.begin(), '\0');
-            ss << mapValueCopy;
-            ss.insert(ss.end(), _ssExtra.begin(), _ssExtra.end());
-            strCommentCopy.append(ss.str());
-        }
-        s << strCommentCopy;
-    }
-
-    template <typename Stream>
-    void Unserialize(Stream& s) {
-        int nVersion = s.GetVersion();
-        if (!(s.GetType() & SER_GETHASH)) {
-            s >> nVersion;
-        }
-        //! Note: strAccount is serialized as part of the key, not here.
-        s >> nCreditDebit >> nTime >> LIMITED_STRING(strOtherAccount, 65536) >> LIMITED_STRING(strComment, 65536);
-
-        size_t nSepPos = strComment.find("\0", 0, 1);
-        mapValue.clear();
-        if (std::string::npos != nSepPos) {
-            CDataStream ss(std::vector<char>(strComment.begin() + nSepPos + 1, strComment.end()), s.GetType(), s.GetVersion());
-            ss >> mapValue;
-            _ssExtra = std::vector<char>(ss.begin(), ss.end());
-        }
-        ReadOrderPos(nOrderPos, mapValue);
-        if (std::string::npos != nSepPos) {
-            strComment.erase(nSepPos);
-        }
-
-        mapValue.erase("n");
-    }
-
-private:
-    std::vector<char> _ssExtra;
-};
-
 struct CoinSelectionParams
 {
     bool use_bnb = true;
@@ -826,10 +740,8 @@ public:
     }
 
     std::map<uint256, CWalletTx> mapWallet;
-    std::list<CAccountingEntry> laccentries;
 
-    typedef std::pair<CWalletTx*, CAccountingEntry*> TxPair;
-    typedef std::multimap<int64_t, TxPair > TxItems;
+    typedef std::multimap<int64_t, CWalletTx*> TxItems;
     TxItems wtxOrdered;
 
     int64_t nOrderPosNext = 0;
@@ -941,8 +853,6 @@ public:
      */
     int64_t IncOrderPosNext(WalletBatch *batch = nullptr) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
     DBErrors ReorderTransactions();
-    bool AccountMove(std::string strFrom, std::string strTo, CAmount nAmount, std::string strComment = "") EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
-    bool GetLabelDestination(CTxDestination &dest, const std::string& label, bool bForceNew = false);
 
     void MarkDirty();
     bool AddToWallet(const CWalletTx& wtxIn, bool fFlushOnClose=true);
@@ -962,7 +872,7 @@ public:
     CAmount GetImmatureBalance() const;
     CAmount GetUnconfirmedWatchOnlyBalance() const;
     CAmount GetImmatureWatchOnlyBalance() const;
-    CAmount GetLegacyBalance(const isminefilter& filter, int minDepth, const std::string* account) const;
+    CAmount GetLegacyBalance(const isminefilter& filter, int minDepth) const;
     CAmount GetAvailableBalance(const CCoinControl* coinControl = nullptr) const;
 
     OutputType TransactionChangeType(OutputType change_type, const std::vector<CRecipient>& vecSend);
@@ -981,11 +891,8 @@ public:
      */
     bool CreateTransaction(const std::vector<CRecipient>& vecSend, CTransactionRef& tx, CReserveKey& reservekey, CAmount& nFeeRet, int& nChangePosInOut,
                            std::string& strFailReason, const CCoinControl& coin_control, bool sign = true);
-    bool CommitTransaction(CTransactionRef tx, mapValue_t mapValue, std::vector<std::pair<std::string, std::string>> orderForm, std::string fromAccount, CReserveKey& reservekey, CConnman* connman, CValidationState& state);
+    bool CommitTransaction(CTransactionRef tx, mapValue_t mapValue, std::vector<std::pair<std::string, std::string>> orderForm, CReserveKey& reservekey, CConnman* connman, CValidationState& state);
 
-    void ListAccountCreditDebit(const std::string& strAccount, std::list<CAccountingEntry>& entries);
-    bool AddAccountingEntry(const CAccountingEntry&);
-    bool AddAccountingEntry(const CAccountingEntry&, WalletBatch *batch);
     bool DummySignTx(CMutableTransaction &txNew, const std::set<CTxOut> &txouts, bool use_max_sig = false) const
     {
         std::vector<CTxOut> v_txouts(txouts.size());
@@ -1044,7 +951,6 @@ public:
     std::map<CTxDestination, CAmount> GetAddressBalances() EXCLUSIVE_LOCKS_REQUIRED(cs_main);
 
     std::set<CTxDestination> GetLabelAddresses(const std::string& label) const;
-    void DeleteLabel(const std::string& label);
 
     isminetype IsMine(const CTxIn& txin) const;
     /**
@@ -1251,37 +1157,6 @@ public:
     void KeepScript() override { KeepKey(); }
 };
 
-
-/**
- * DEPRECATED Account information.
- * Stored in wallet with key "acc"+string account name.
- */
-class CAccount
-{
-public:
-    CPubKey vchPubKey;
-
-    CAccount()
-    {
-        SetNull();
-    }
-
-    void SetNull()
-    {
-        vchPubKey = CPubKey();
-    }
-
-    ADD_SERIALIZE_METHODS;
-
-    template <typename Stream, typename Operation>
-    inline void SerializationOp(Stream& s, Operation ser_action) {
-        int nVersion = s.GetVersion();
-        if (!(s.GetType() & SER_GETHASH))
-            READWRITE(nVersion);
-        READWRITE(vchPubKey);
-    }
-};
-
 /** RAII object to check and reserve a wallet rescan */
 class WalletRescanReserver
 {
diff --git a/src/wallet/walletdb.cpp b/src/wallet/walletdb.cpp
index 1b787be198..5ce4d080e5 100644
--- a/src/wallet/walletdb.cpp
+++ b/src/wallet/walletdb.cpp
@@ -17,6 +17,7 @@
 #include <wallet/wallet.h>
 
 #include <atomic>
+#include <string>
 
 #include <boost/thread.hpp>
 
@@ -150,82 +151,6 @@ bool WalletBatch::WriteMinVersion(int nVersion)
     return WriteIC(std::string("minversion"), nVersion);
 }
 
-bool WalletBatch::ReadAccount(const std::string& strAccount, CAccount& account)
-{
-    account.SetNull();
-    return m_batch.Read(std::make_pair(std::string("acc"), strAccount), account);
-}
-
-bool WalletBatch::WriteAccount(const std::string& strAccount, const CAccount& account)
-{
-    return WriteIC(std::make_pair(std::string("acc"), strAccount), account);
-}
-
-bool WalletBatch::EraseAccount(const std::string& strAccount)
-{
-    return EraseIC(std::make_pair(std::string("acc"), strAccount));
-}
-
-bool WalletBatch::WriteAccountingEntry(const uint64_t nAccEntryNum, const CAccountingEntry& acentry)
-{
-    return WriteIC(std::make_pair(std::string("acentry"), std::make_pair(acentry.strAccount, nAccEntryNum)), acentry);
-}
-
-CAmount WalletBatch::GetAccountCreditDebit(const std::string& strAccount)
-{
-    std::list<CAccountingEntry> entries;
-    ListAccountCreditDebit(strAccount, entries);
-
-    CAmount nCreditDebit = 0;
-    for (const CAccountingEntry& entry : entries)
-        nCreditDebit += entry.nCreditDebit;
-
-    return nCreditDebit;
-}
-
-void WalletBatch::ListAccountCreditDebit(const std::string& strAccount, std::list<CAccountingEntry>& entries)
-{
-    bool fAllAccounts = (strAccount == "*");
-
-    Dbc* pcursor = m_batch.GetCursor();
-    if (!pcursor)
-        throw std::runtime_error(std::string(__func__) + ": cannot create DB cursor");
-    bool setRange = true;
-    while (true)
-    {
-        // Read next record
-        CDataStream ssKey(SER_DISK, CLIENT_VERSION);
-        if (setRange)
-            ssKey << std::make_pair(std::string("acentry"), std::make_pair((fAllAccounts ? std::string("") : strAccount), uint64_t(0)));
-        CDataStream ssValue(SER_DISK, CLIENT_VERSION);
-        int ret = m_batch.ReadAtCursor(pcursor, ssKey, ssValue, setRange);
-        setRange = false;
-        if (ret == DB_NOTFOUND)
-            break;
-        else if (ret != 0)
-        {
-            pcursor->close();
-            throw std::runtime_error(std::string(__func__) + ": error scanning DB");
-        }
-
-        // Unserialize
-        std::string strType;
-        ssKey >> strType;
-        if (strType != "acentry")
-            break;
-        CAccountingEntry acentry;
-        ssKey >> acentry.strAccount;
-        if (!fAllAccounts && acentry.strAccount != strAccount)
-            break;
-
-        ssValue >> acentry;
-        ssKey >> acentry.nEntryNo;
-        entries.push_back(acentry);
-    }
-
-    pcursor->close();
-}
-
 class CWalletScanState {
 public:
     unsigned int nKeys;
@@ -284,9 +209,10 @@ ReadKeyValue(CWallet* pwallet, CDataStream& ssKey, CDataStream& ssValue,
                 {
                     char fTmp;
                     char fUnused;
-                    ssValue >> fTmp >> fUnused >> wtx.strFromAccount;
-                    strErr = strprintf("LoadWallet() upgrading tx ver=%d %d '%s' %s",
-                                       wtx.fTimeReceivedIsTxTime, fTmp, wtx.strFromAccount, hash.ToString());
+                    std::string unused_string;
+                    ssValue >> fTmp >> fUnused >> unused_string;
+                    strErr = strprintf("LoadWallet() upgrading tx ver=%d %d %s",
+                                       wtx.fTimeReceivedIsTxTime, fTmp, hash.ToString());
                     wtx.fTimeReceivedIsTxTime = fTmp;
                 }
                 else
@@ -302,24 +228,6 @@ ReadKeyValue(CWallet* pwallet, CDataStream& ssKey, CDataStream& ssValue,
 
             pwallet->LoadToWallet(wtx);
         }
-        else if (strType == "acentry")
-        {
-            std::string strAccount;
-            ssKey >> strAccount;
-            uint64_t nNumber;
-            ssKey >> nNumber;
-            if (nNumber > pwallet->nAccountingEntryNumber) {
-                pwallet->nAccountingEntryNumber = nNumber;
-            }
-
-            if (!wss.fAnyUnordered)
-            {
-                CAccountingEntry acentry;
-                ssValue >> acentry;
-                if (acentry.nOrderPos == -1)
-                    wss.fAnyUnordered = true;
-            }
-        }
         else if (strType == "watchs")
         {
             wss.nWatchKeys++;
@@ -510,7 +418,7 @@ ReadKeyValue(CWallet* pwallet, CDataStream& ssKey, CDataStream& ssValue,
                 return false;
             }
         } else if (strType != "bestblock" && strType != "bestblock_nomerkle" &&
-                strType != "minversion") {
+                strType != "minversion" && strType != "acentry") {
             wss.m_unknown_records++;
         }
     } catch (...)
@@ -625,12 +533,6 @@ DBErrors WalletBatch::LoadWallet(CWallet* pwallet)
     if (wss.fAnyUnordered)
         result = pwallet->ReorderTransactions();
 
-    pwallet->laccentries.clear();
-    ListAccountCreditDebit("*", pwallet->laccentries);
-    for (CAccountingEntry& entry : pwallet->laccentries) {
-        pwallet->wtxOrdered.insert(make_pair(entry.nOrderPos, CWallet::TxPair(nullptr, &entry)));
-    }
-
     return result;
 }
 
diff --git a/src/wallet/walletdb.h b/src/wallet/walletdb.h
index 0e6cb1bba4..5584407a56 100644
--- a/src/wallet/walletdb.h
+++ b/src/wallet/walletdb.h
@@ -31,8 +31,6 @@
 
 static const bool DEFAULT_FLUSHWALLET = true;
 
-class CAccount;
-class CAccountingEntry;
 struct CBlockLocator;
 class CKeyPool;
 class CMasterKey;
@@ -199,21 +197,11 @@ public:
 
     bool WriteMinVersion(int nVersion);
 
-    /// This writes directly to the database, and will not update the CWallet's cached accounting entries!
-    /// Use wallet.AddAccountingEntry instead, to write *and* update its caches.
-    bool WriteAccountingEntry(const uint64_t nAccEntryNum, const CAccountingEntry& acentry);
-    bool ReadAccount(const std::string& strAccount, CAccount& account);
-    bool WriteAccount(const std::string& strAccount, const CAccount& account);
-    bool EraseAccount(const std::string& strAccount);
-
     /// Write destination data key,value tuple to database
     bool WriteDestData(const std::string &address, const std::string &key, const std::string &value);
     /// Erase destination data tuple from wallet database
     bool EraseDestData(const std::string &address, const std::string &key);
 
-    CAmount GetAccountCreditDebit(const std::string& strAccount);
-    void ListAccountCreditDebit(const std::string& strAccount, std::list<CAccountingEntry>& acentries);
-
     DBErrors LoadWallet(CWallet* pwallet);
     DBErrors FindWalletTx(std::vector<uint256>& vTxHash, std::vector<CWalletTx>& vWtx);
     DBErrors ZapWalletTx(std::vector<CWalletTx>& vWtx);