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path: root/src/rpc/rawtransaction.cpp
blob: bd56e584e1872bebb6b478cc5d6a7afaa172a65d (plain)
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// Copyright (c) 2010 Satoshi Nakamoto
// Copyright (c) 2009-2020 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.

#include <chain.h>
#include <coins.h>
#include <consensus/amount.h>
#include <consensus/validation.h>
#include <core_io.h>
#include <index/txindex.h>
#include <key_io.h>
#include <merkleblock.h>
#include <node/blockstorage.h>
#include <node/coin.h>
#include <node/context.h>
#include <node/psbt.h>
#include <node/transaction.h>
#include <policy/packages.h>
#include <policy/policy.h>
#include <policy/rbf.h>
#include <primitives/transaction.h>
#include <psbt.h>
#include <random.h>
#include <rpc/blockchain.h>
#include <rpc/rawtransaction_util.h>
#include <rpc/server.h>
#include <rpc/util.h>
#include <script/script.h>
#include <script/sign.h>
#include <script/signingprovider.h>
#include <script/standard.h>
#include <uint256.h>
#include <util/bip32.h>
#include <util/moneystr.h>
#include <util/strencodings.h>
#include <util/string.h>
#include <validation.h>
#include <validationinterface.h>

#include <numeric>
#include <stdint.h>

#include <univalue.h>

static void TxToJSON(const CTransaction& tx, const uint256 hashBlock, UniValue& entry, CChainState& active_chainstate)
{
    // Call into TxToUniv() in bitcoin-common to decode the transaction hex.
    //
    // Blockchain contextual information (confirmations and blocktime) is not
    // available to code in bitcoin-common, so we query them here and push the
    // data into the returned UniValue.
    TxToUniv(tx, uint256(), entry, true, RPCSerializationFlags());

    if (!hashBlock.IsNull()) {
        LOCK(cs_main);

        entry.pushKV("blockhash", hashBlock.GetHex());
        CBlockIndex* pindex = active_chainstate.m_blockman.LookupBlockIndex(hashBlock);
        if (pindex) {
            if (active_chainstate.m_chain.Contains(pindex)) {
                entry.pushKV("confirmations", 1 + active_chainstate.m_chain.Height() - pindex->nHeight);
                entry.pushKV("time", pindex->GetBlockTime());
                entry.pushKV("blocktime", pindex->GetBlockTime());
            }
            else
                entry.pushKV("confirmations", 0);
        }
    }
}

static std::vector<RPCArg> CreateTxDoc()
{
    return {
        {"inputs", RPCArg::Type::ARR, RPCArg::Optional::NO, "The inputs",
            {
                {"", RPCArg::Type::OBJ, RPCArg::Optional::OMITTED, "",
                    {
                        {"txid", RPCArg::Type::STR_HEX, RPCArg::Optional::NO, "The transaction id"},
                        {"vout", RPCArg::Type::NUM, RPCArg::Optional::NO, "The output number"},
                        {"sequence", RPCArg::Type::NUM, RPCArg::DefaultHint{"depends on the value of the 'replaceable' and 'locktime' arguments"}, "The sequence number"},
                    },
                },
            },
        },
        {"outputs", RPCArg::Type::ARR, RPCArg::Optional::NO, "The outputs (key-value pairs), where none of the keys are duplicated.\n"
                "That is, each address can only appear once and there can only be one 'data' object.\n"
                "For compatibility reasons, a dictionary, which holds the key-value pairs directly, is also\n"
                "                             accepted as second parameter.",
            {
                {"", RPCArg::Type::OBJ_USER_KEYS, RPCArg::Optional::OMITTED, "",
                    {
                        {"address", RPCArg::Type::AMOUNT, RPCArg::Optional::NO, "A key-value pair. The key (string) is the bitcoin address, the value (float or string) is the amount in " + CURRENCY_UNIT},
                    },
                },
                {"", RPCArg::Type::OBJ, RPCArg::Optional::OMITTED, "",
                    {
                        {"data", RPCArg::Type::STR_HEX, RPCArg::Optional::NO, "A key-value pair. The key must be \"data\", the value is hex-encoded data"},
                    },
                },
            },
        },
        {"locktime", RPCArg::Type::NUM, RPCArg::Default{0}, "Raw locktime. Non-0 value also locktime-activates inputs"},
        {"replaceable", RPCArg::Type::BOOL, RPCArg::Default{false}, "Marks this transaction as BIP125-replaceable.\n"
                "Allows this transaction to be replaced by a transaction with higher fees. If provided, it is an error if explicit sequence numbers are incompatible."},
    };
}

static RPCHelpMan getrawtransaction()
{
    return RPCHelpMan{
                "getrawtransaction",
                "\nReturn the raw transaction data.\n"

                "\nBy default, this call only returns a transaction if it is in the mempool. If -txindex is enabled\n"
                "and no blockhash argument is passed, it will return the transaction if it is in the mempool or any block.\n"
                "If a blockhash argument is passed, it will return the transaction if\n"
                "the specified block is available and the transaction is in that block.\n"
                "\nHint: Use gettransaction for wallet transactions.\n"

                "\nIf verbose is 'true', returns an Object with information about 'txid'.\n"
                "If verbose is 'false' or omitted, returns a string that is serialized, hex-encoded data for 'txid'.\n",
                {
                    {"txid", RPCArg::Type::STR_HEX, RPCArg::Optional::NO, "The transaction id"},
                    {"verbose", RPCArg::Type::BOOL, RPCArg::Default{false}, "If false, return a string, otherwise return a json object"},
                    {"blockhash", RPCArg::Type::STR_HEX, RPCArg::Optional::OMITTED_NAMED_ARG, "The block in which to look for the transaction"},
                },
                {
                    RPCResult{"if verbose is not set or set to false",
                         RPCResult::Type::STR, "data", "The serialized, hex-encoded data for 'txid'"
                     },
                     RPCResult{"if verbose is set to true",
                         RPCResult::Type::OBJ, "", "",
                         {
                             {RPCResult::Type::BOOL, "in_active_chain", /* optional */ true, "Whether specified block is in the active chain or not (only present with explicit \"blockhash\" argument)"},
                             {RPCResult::Type::STR_HEX, "hex", "The serialized, hex-encoded data for 'txid'"},
                             {RPCResult::Type::STR_HEX, "txid", "The transaction id (same as provided)"},
                             {RPCResult::Type::STR_HEX, "hash", "The transaction hash (differs from txid for witness transactions)"},
                             {RPCResult::Type::NUM, "size", "The serialized transaction size"},
                             {RPCResult::Type::NUM, "vsize", "The virtual transaction size (differs from size for witness transactions)"},
                             {RPCResult::Type::NUM, "weight", "The transaction's weight (between vsize*4-3 and vsize*4)"},
                             {RPCResult::Type::NUM, "version", "The version"},
                             {RPCResult::Type::NUM_TIME, "locktime", "The lock time"},
                             {RPCResult::Type::ARR, "vin", "",
                             {
                                 {RPCResult::Type::OBJ, "", "",
                                 {
                                     {RPCResult::Type::STR_HEX, "txid", "The transaction id"},
                                     {RPCResult::Type::NUM, "vout", "The output number"},
                                     {RPCResult::Type::OBJ, "scriptSig", "The script",
                                     {
                                         {RPCResult::Type::STR, "asm", "asm"},
                                         {RPCResult::Type::STR_HEX, "hex", "hex"},
                                     }},
                                     {RPCResult::Type::NUM, "sequence", "The script sequence number"},
                                     {RPCResult::Type::ARR, "txinwitness", /* optional */ true, "",
                                     {
                                         {RPCResult::Type::STR_HEX, "hex", "hex-encoded witness data (if any)"},
                                     }},
                                 }},
                             }},
                             {RPCResult::Type::ARR, "vout", "",
                             {
                                 {RPCResult::Type::OBJ, "", "",
                                 {
                                     {RPCResult::Type::NUM, "value", "The value in " + CURRENCY_UNIT},
                                     {RPCResult::Type::NUM, "n", "index"},
                                     {RPCResult::Type::OBJ, "scriptPubKey", "",
                                     {
                                         {RPCResult::Type::STR, "asm", "the asm"},
                                         {RPCResult::Type::STR, "hex", "the hex"},
                                         {RPCResult::Type::STR, "type", "The type, eg 'pubkeyhash'"},
                                         {RPCResult::Type::STR, "address", /* optional */ true, "The Bitcoin address (only if a well-defined address exists)"},
                                     }},
                                 }},
                             }},
                             {RPCResult::Type::STR_HEX, "blockhash", /* optional */ true, "the block hash"},
                             {RPCResult::Type::NUM, "confirmations", /* optional */ true, "The confirmations"},
                             {RPCResult::Type::NUM_TIME, "blocktime", /* optional */ true, "The block time expressed in " + UNIX_EPOCH_TIME},
                             {RPCResult::Type::NUM, "time", /* optional */ true, "Same as \"blocktime\""},
                        }
                    },
                },
                RPCExamples{
                    HelpExampleCli("getrawtransaction", "\"mytxid\"")
            + HelpExampleCli("getrawtransaction", "\"mytxid\" true")
            + HelpExampleRpc("getrawtransaction", "\"mytxid\", true")
            + HelpExampleCli("getrawtransaction", "\"mytxid\" false \"myblockhash\"")
            + HelpExampleCli("getrawtransaction", "\"mytxid\" true \"myblockhash\"")
                },
        [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
{
    const NodeContext& node = EnsureAnyNodeContext(request.context);
    ChainstateManager& chainman = EnsureChainman(node);

    bool in_active_chain = true;
    uint256 hash = ParseHashV(request.params[0], "parameter 1");
    CBlockIndex* blockindex = nullptr;

    if (hash == Params().GenesisBlock().hashMerkleRoot) {
        // Special exception for the genesis block coinbase transaction
        throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "The genesis block coinbase is not considered an ordinary transaction and cannot be retrieved");
    }

    // Accept either a bool (true) or a num (>=1) to indicate verbose output.
    bool fVerbose = false;
    if (!request.params[1].isNull()) {
        fVerbose = request.params[1].isNum() ? (request.params[1].get_int() != 0) : request.params[1].get_bool();
    }

    if (!request.params[2].isNull()) {
        LOCK(cs_main);

        uint256 blockhash = ParseHashV(request.params[2], "parameter 3");
        blockindex = chainman.m_blockman.LookupBlockIndex(blockhash);
        if (!blockindex) {
            throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Block hash not found");
        }
        in_active_chain = chainman.ActiveChain().Contains(blockindex);
    }

    bool f_txindex_ready = false;
    if (g_txindex && !blockindex) {
        f_txindex_ready = g_txindex->BlockUntilSyncedToCurrentChain();
    }

    uint256 hash_block;
    const CTransactionRef tx = GetTransaction(blockindex, node.mempool.get(), hash, Params().GetConsensus(), hash_block);
    if (!tx) {
        std::string errmsg;
        if (blockindex) {
            if (!(blockindex->nStatus & BLOCK_HAVE_DATA)) {
                throw JSONRPCError(RPC_MISC_ERROR, "Block not available");
            }
            errmsg = "No such transaction found in the provided block";
        } else if (!g_txindex) {
            errmsg = "No such mempool transaction. Use -txindex or provide a block hash to enable blockchain transaction queries";
        } else if (!f_txindex_ready) {
            errmsg = "No such mempool transaction. Blockchain transactions are still in the process of being indexed";
        } else {
            errmsg = "No such mempool or blockchain transaction";
        }
        throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, errmsg + ". Use gettransaction for wallet transactions.");
    }

    if (!fVerbose) {
        return EncodeHexTx(*tx, RPCSerializationFlags());
    }

    UniValue result(UniValue::VOBJ);
    if (blockindex) result.pushKV("in_active_chain", in_active_chain);
    TxToJSON(*tx, hash_block, result, chainman.ActiveChainstate());
    return result;
},
    };
}

static RPCHelpMan gettxoutproof()
{
    return RPCHelpMan{"gettxoutproof",
                "\nReturns a hex-encoded proof that \"txid\" was included in a block.\n"
                "\nNOTE: By default this function only works sometimes. This is when there is an\n"
                "unspent output in the utxo for this transaction. To make it always work,\n"
                "you need to maintain a transaction index, using the -txindex command line option or\n"
                "specify the block in which the transaction is included manually (by blockhash).\n",
                {
                    {"txids", RPCArg::Type::ARR, RPCArg::Optional::NO, "The txids to filter",
                        {
                            {"txid", RPCArg::Type::STR_HEX, RPCArg::Optional::OMITTED, "A transaction hash"},
                        },
                        },
                    {"blockhash", RPCArg::Type::STR_HEX, RPCArg::Optional::OMITTED_NAMED_ARG, "If specified, looks for txid in the block with this hash"},
                },
                RPCResult{
                    RPCResult::Type::STR, "data", "A string that is a serialized, hex-encoded data for the proof."
                },
                RPCExamples{""},
        [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
{
    std::set<uint256> setTxids;
    UniValue txids = request.params[0].get_array();
    if (txids.empty()) {
        throw JSONRPCError(RPC_INVALID_PARAMETER, "Parameter 'txids' cannot be empty");
    }
    for (unsigned int idx = 0; idx < txids.size(); idx++) {
        auto ret = setTxids.insert(ParseHashV(txids[idx], "txid"));
        if (!ret.second) {
            throw JSONRPCError(RPC_INVALID_PARAMETER, std::string("Invalid parameter, duplicated txid: ") + txids[idx].get_str());
        }
    }

    CBlockIndex* pblockindex = nullptr;
    uint256 hashBlock;
    ChainstateManager& chainman = EnsureAnyChainman(request.context);
    if (!request.params[1].isNull()) {
        LOCK(cs_main);
        hashBlock = ParseHashV(request.params[1], "blockhash");
        pblockindex = chainman.m_blockman.LookupBlockIndex(hashBlock);
        if (!pblockindex) {
            throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Block not found");
        }
    } else {
        LOCK(cs_main);
        CChainState& active_chainstate = chainman.ActiveChainstate();

        // Loop through txids and try to find which block they're in. Exit loop once a block is found.
        for (const auto& tx : setTxids) {
            const Coin& coin = AccessByTxid(active_chainstate.CoinsTip(), tx);
            if (!coin.IsSpent()) {
                pblockindex = active_chainstate.m_chain[coin.nHeight];
                break;
            }
        }
    }


    // Allow txindex to catch up if we need to query it and before we acquire cs_main.
    if (g_txindex && !pblockindex) {
        g_txindex->BlockUntilSyncedToCurrentChain();
    }

    LOCK(cs_main);

    if (pblockindex == nullptr) {
        const CTransactionRef tx = GetTransaction(/* block_index */ nullptr, /* mempool */ nullptr, *setTxids.begin(), Params().GetConsensus(), hashBlock);
        if (!tx || hashBlock.IsNull()) {
            throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Transaction not yet in block");
        }
        pblockindex = chainman.m_blockman.LookupBlockIndex(hashBlock);
        if (!pblockindex) {
            throw JSONRPCError(RPC_INTERNAL_ERROR, "Transaction index corrupt");
        }
    }

    CBlock block;
    if (!ReadBlockFromDisk(block, pblockindex, Params().GetConsensus())) {
        throw JSONRPCError(RPC_INTERNAL_ERROR, "Can't read block from disk");
    }

    unsigned int ntxFound = 0;
    for (const auto& tx : block.vtx) {
        if (setTxids.count(tx->GetHash())) {
            ntxFound++;
        }
    }
    if (ntxFound != setTxids.size()) {
        throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Not all transactions found in specified or retrieved block");
    }

    CDataStream ssMB(SER_NETWORK, PROTOCOL_VERSION | SERIALIZE_TRANSACTION_NO_WITNESS);
    CMerkleBlock mb(block, setTxids);
    ssMB << mb;
    std::string strHex = HexStr(ssMB);
    return strHex;
},
    };
}

static RPCHelpMan verifytxoutproof()
{
    return RPCHelpMan{"verifytxoutproof",
                "\nVerifies that a proof points to a transaction in a block, returning the transaction it commits to\n"
                "and throwing an RPC error if the block is not in our best chain\n",
                {
                    {"proof", RPCArg::Type::STR_HEX, RPCArg::Optional::NO, "The hex-encoded proof generated by gettxoutproof"},
                },
                RPCResult{
                    RPCResult::Type::ARR, "", "",
                    {
                        {RPCResult::Type::STR_HEX, "txid", "The txid(s) which the proof commits to, or empty array if the proof can not be validated."},
                    }
                },
                RPCExamples{""},
        [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
{
    CDataStream ssMB(ParseHexV(request.params[0], "proof"), SER_NETWORK, PROTOCOL_VERSION | SERIALIZE_TRANSACTION_NO_WITNESS);
    CMerkleBlock merkleBlock;
    ssMB >> merkleBlock;

    UniValue res(UniValue::VARR);

    std::vector<uint256> vMatch;
    std::vector<unsigned int> vIndex;
    if (merkleBlock.txn.ExtractMatches(vMatch, vIndex) != merkleBlock.header.hashMerkleRoot)
        return res;

    ChainstateManager& chainman = EnsureAnyChainman(request.context);
    LOCK(cs_main);

    const CBlockIndex* pindex = chainman.m_blockman.LookupBlockIndex(merkleBlock.header.GetHash());
    if (!pindex || !chainman.ActiveChain().Contains(pindex) || pindex->nTx == 0) {
        throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Block not found in chain");
    }

    // Check if proof is valid, only add results if so
    if (pindex->nTx == merkleBlock.txn.GetNumTransactions()) {
        for (const uint256& hash : vMatch) {
            res.push_back(hash.GetHex());
        }
    }

    return res;
},
    };
}

static RPCHelpMan createrawtransaction()
{
    return RPCHelpMan{"createrawtransaction",
                "\nCreate a transaction spending the given inputs and creating new outputs.\n"
                "Outputs can be addresses or data.\n"
                "Returns hex-encoded raw transaction.\n"
                "Note that the transaction's inputs are not signed, and\n"
                "it is not stored in the wallet or transmitted to the network.\n",
                CreateTxDoc(),
                RPCResult{
                    RPCResult::Type::STR_HEX, "transaction", "hex string of the transaction"
                },
                RPCExamples{
                    HelpExampleCli("createrawtransaction", "\"[{\\\"txid\\\":\\\"myid\\\",\\\"vout\\\":0}]\" \"[{\\\"address\\\":0.01}]\"")
            + HelpExampleCli("createrawtransaction", "\"[{\\\"txid\\\":\\\"myid\\\",\\\"vout\\\":0}]\" \"[{\\\"data\\\":\\\"00010203\\\"}]\"")
            + HelpExampleRpc("createrawtransaction", "\"[{\\\"txid\\\":\\\"myid\\\",\\\"vout\\\":0}]\", \"[{\\\"address\\\":0.01}]\"")
            + HelpExampleRpc("createrawtransaction", "\"[{\\\"txid\\\":\\\"myid\\\",\\\"vout\\\":0}]\", \"[{\\\"data\\\":\\\"00010203\\\"}]\"")
                },
        [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
{
    RPCTypeCheck(request.params, {
        UniValue::VARR,
        UniValueType(), // ARR or OBJ, checked later
        UniValue::VNUM,
        UniValue::VBOOL
        }, true
    );

    bool rbf = false;
    if (!request.params[3].isNull()) {
        rbf = request.params[3].isTrue();
    }
    CMutableTransaction rawTx = ConstructTransaction(request.params[0], request.params[1], request.params[2], rbf);

    return EncodeHexTx(CTransaction(rawTx));
},
    };
}

static RPCHelpMan decoderawtransaction()
{
    return RPCHelpMan{"decoderawtransaction",
                "\nReturn a JSON object representing the serialized, hex-encoded transaction.\n",
                {
                    {"hexstring", RPCArg::Type::STR_HEX, RPCArg::Optional::NO, "The transaction hex string"},
                    {"iswitness", RPCArg::Type::BOOL, RPCArg::DefaultHint{"depends on heuristic tests"}, "Whether the transaction hex is a serialized witness transaction.\n"
                        "If iswitness is not present, heuristic tests will be used in decoding.\n"
                        "If true, only witness deserialization will be tried.\n"
                        "If false, only non-witness deserialization will be tried.\n"
                        "This boolean should reflect whether the transaction has inputs\n"
                        "(e.g. fully valid, or on-chain transactions), if known by the caller."
                    },
                },
                RPCResult{
                    RPCResult::Type::OBJ, "", "",
                    {
                        {RPCResult::Type::STR_HEX, "txid", "The transaction id"},
                        {RPCResult::Type::STR_HEX, "hash", "The transaction hash (differs from txid for witness transactions)"},
                        {RPCResult::Type::NUM, "size", "The transaction size"},
                        {RPCResult::Type::NUM, "vsize", "The virtual transaction size (differs from size for witness transactions)"},
                        {RPCResult::Type::NUM, "weight", "The transaction's weight (between vsize*4 - 3 and vsize*4)"},
                        {RPCResult::Type::NUM, "version", "The version"},
                        {RPCResult::Type::NUM_TIME, "locktime", "The lock time"},
                        {RPCResult::Type::ARR, "vin", "",
                        {
                            {RPCResult::Type::OBJ, "", "",
                            {
                                {RPCResult::Type::STR_HEX, "coinbase", /* optional */ true, ""},
                                {RPCResult::Type::STR_HEX, "txid", /* optional */ true, "The transaction id"},
                                {RPCResult::Type::NUM, "vout", /* optional */ true, "The output number"},
                                {RPCResult::Type::OBJ, "scriptSig", /* optional */ true, "The script",
                                {
                                    {RPCResult::Type::STR, "asm", "asm"},
                                    {RPCResult::Type::STR_HEX, "hex", "hex"},
                                }},
                                {RPCResult::Type::ARR, "txinwitness", /* optional */ true, "",
                                {
                                    {RPCResult::Type::STR_HEX, "hex", "hex-encoded witness data (if any)"},
                                }},
                                {RPCResult::Type::NUM, "sequence", "The script sequence number"},
                            }},
                        }},
                        {RPCResult::Type::ARR, "vout", "",
                        {
                            {RPCResult::Type::OBJ, "", "",
                            {
                                {RPCResult::Type::NUM, "value", "The value in " + CURRENCY_UNIT},
                                {RPCResult::Type::NUM, "n", "index"},
                                {RPCResult::Type::OBJ, "scriptPubKey", "",
                                {
                                    {RPCResult::Type::STR, "asm", "the asm"},
                                    {RPCResult::Type::STR_HEX, "hex", "the hex"},
                                    {RPCResult::Type::STR, "type", "The type, eg 'pubkeyhash'"},
                                    {RPCResult::Type::STR, "address", /* optional */ true, "The Bitcoin address (only if a well-defined address exists)"},
                                }},
                            }},
                        }},
                    }
                },
                RPCExamples{
                    HelpExampleCli("decoderawtransaction", "\"hexstring\"")
            + HelpExampleRpc("decoderawtransaction", "\"hexstring\"")
                },
        [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
{
    RPCTypeCheck(request.params, {UniValue::VSTR, UniValue::VBOOL});

    CMutableTransaction mtx;

    bool try_witness = request.params[1].isNull() ? true : request.params[1].get_bool();
    bool try_no_witness = request.params[1].isNull() ? true : !request.params[1].get_bool();

    if (!DecodeHexTx(mtx, request.params[0].get_str(), try_no_witness, try_witness)) {
        throw JSONRPCError(RPC_DESERIALIZATION_ERROR, "TX decode failed");
    }

    UniValue result(UniValue::VOBJ);
    TxToUniv(CTransaction(std::move(mtx)), uint256(), result, false);

    return result;
},
    };
}

static std::string GetAllOutputTypes()
{
    std::vector<std::string> ret;
    using U = std::underlying_type<TxoutType>::type;
    for (U i = (U)TxoutType::NONSTANDARD; i <= (U)TxoutType::WITNESS_UNKNOWN; ++i) {
        ret.emplace_back(GetTxnOutputType(static_cast<TxoutType>(i)));
    }
    return Join(ret, ", ");
}

static RPCHelpMan decodescript()
{
    return RPCHelpMan{
        "decodescript",
        "\nDecode a hex-encoded script.\n",
        {
            {"hexstring", RPCArg::Type::STR_HEX, RPCArg::Optional::NO, "the hex-encoded script"},
        },
        RPCResult{
            RPCResult::Type::OBJ, "", "",
            {
                {RPCResult::Type::STR, "asm", "Script public key"},
                {RPCResult::Type::STR, "type", "The output type (e.g. " + GetAllOutputTypes() + ")"},
                {RPCResult::Type::STR, "address", /* optional */ true, "The Bitcoin address (only if a well-defined address exists)"},
                {RPCResult::Type::STR, "p2sh", /*optional=*/true,
                 "address of P2SH script wrapping this redeem script (not returned for types that should not be wrapped)"},
                {RPCResult::Type::OBJ, "segwit", /*optional=*/true,
                 "Result of a witness script public key wrapping this redeem script (not returned for types that should not be wrapped)",
                 {
                     {RPCResult::Type::STR, "asm", "String representation of the script public key"},
                     {RPCResult::Type::STR_HEX, "hex", "Hex string of the script public key"},
                     {RPCResult::Type::STR, "type", "The type of the script public key (e.g. witness_v0_keyhash or witness_v0_scripthash)"},
                     {RPCResult::Type::STR, "address", /* optional */ true, "The Bitcoin address (only if a well-defined address exists)"},
                     {RPCResult::Type::STR, "p2sh-segwit", "address of the P2SH script wrapping this witness redeem script"},
                 }},
            },
        },
        RPCExamples{
            HelpExampleCli("decodescript", "\"hexstring\"")
          + HelpExampleRpc("decodescript", "\"hexstring\"")
        },
        [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
{
    RPCTypeCheck(request.params, {UniValue::VSTR});

    UniValue r(UniValue::VOBJ);
    CScript script;
    if (request.params[0].get_str().size() > 0){
        std::vector<unsigned char> scriptData(ParseHexV(request.params[0], "argument"));
        script = CScript(scriptData.begin(), scriptData.end());
    } else {
        // Empty scripts are valid
    }
    ScriptPubKeyToUniv(script, r, /* include_hex */ false);

    std::vector<std::vector<unsigned char>> solutions_data;
    const TxoutType which_type{Solver(script, solutions_data)};

    const bool can_wrap{[&] {
        switch (which_type) {
        case TxoutType::MULTISIG:
        case TxoutType::NONSTANDARD:
        case TxoutType::PUBKEY:
        case TxoutType::PUBKEYHASH:
        case TxoutType::WITNESS_V0_KEYHASH:
        case TxoutType::WITNESS_V0_SCRIPTHASH:
            // Can be wrapped if the checks below pass
            break;
        case TxoutType::NULL_DATA:
        case TxoutType::SCRIPTHASH:
        case TxoutType::WITNESS_UNKNOWN:
        case TxoutType::WITNESS_V1_TAPROOT:
            // Should not be wrapped
            return false;
        } // no default case, so the compiler can warn about missing cases
        if (!script.HasValidOps() || script.IsUnspendable()) {
            return false;
        }
        for (CScript::const_iterator it{script.begin()}; it != script.end();) {
            opcodetype op;
            CHECK_NONFATAL(script.GetOp(it, op));
            if (op == OP_CHECKSIGADD || IsOpSuccess(op)) {
                return false;
            }
        }
        return true;
    }()};

    if (can_wrap) {
        r.pushKV("p2sh", EncodeDestination(ScriptHash(script)));
        // P2SH and witness programs cannot be wrapped in P2WSH, if this script
        // is a witness program, don't return addresses for a segwit programs.
        const bool can_wrap_P2WSH{[&] {
            switch (which_type) {
            case TxoutType::MULTISIG:
            case TxoutType::PUBKEY:
            // Uncompressed pubkeys cannot be used with segwit checksigs.
            // If the script contains an uncompressed pubkey, skip encoding of a segwit program.
                for (const auto& solution : solutions_data) {
                    if ((solution.size() != 1) && !CPubKey(solution).IsCompressed()) {
                        return false;
                    }
                }
                return true;
            case TxoutType::NONSTANDARD:
            case TxoutType::PUBKEYHASH:
                // Can be P2WSH wrapped
                return true;
            case TxoutType::NULL_DATA:
            case TxoutType::SCRIPTHASH:
            case TxoutType::WITNESS_UNKNOWN:
            case TxoutType::WITNESS_V0_KEYHASH:
            case TxoutType::WITNESS_V0_SCRIPTHASH:
            case TxoutType::WITNESS_V1_TAPROOT:
                // Should not be wrapped
                return false;
            } // no default case, so the compiler can warn about missing cases
            CHECK_NONFATAL(false);
        }()};
        if (can_wrap_P2WSH) {
            UniValue sr(UniValue::VOBJ);
            CScript segwitScr;
            if (which_type == TxoutType::PUBKEY) {
                segwitScr = GetScriptForDestination(WitnessV0KeyHash(Hash160(solutions_data[0])));
            } else if (which_type == TxoutType::PUBKEYHASH) {
                segwitScr = GetScriptForDestination(WitnessV0KeyHash(uint160{solutions_data[0]}));
            } else {
                // Scripts that are not fit for P2WPKH are encoded as P2WSH.
                segwitScr = GetScriptForDestination(WitnessV0ScriptHash(script));
            }
            ScriptPubKeyToUniv(segwitScr, sr, /* include_hex */ true);
            sr.pushKV("p2sh-segwit", EncodeDestination(ScriptHash(segwitScr)));
            r.pushKV("segwit", sr);
        }
    }

    return r;
},
    };
}

static RPCHelpMan combinerawtransaction()
{
    return RPCHelpMan{"combinerawtransaction",
                "\nCombine multiple partially signed transactions into one transaction.\n"
                "The combined transaction may be another partially signed transaction or a \n"
                "fully signed transaction.",
                {
                    {"txs", RPCArg::Type::ARR, RPCArg::Optional::NO, "The hex strings of partially signed transactions",
                        {
                            {"hexstring", RPCArg::Type::STR_HEX, RPCArg::Optional::OMITTED, "A hex-encoded raw transaction"},
                        },
                        },
                },
                RPCResult{
                    RPCResult::Type::STR, "", "The hex-encoded raw transaction with signature(s)"
                },
                RPCExamples{
                    HelpExampleCli("combinerawtransaction", R"('["myhex1", "myhex2", "myhex3"]')")
                },
        [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
{

    UniValue txs = request.params[0].get_array();
    std::vector<CMutableTransaction> txVariants(txs.size());

    for (unsigned int idx = 0; idx < txs.size(); idx++) {
        if (!DecodeHexTx(txVariants[idx], txs[idx].get_str())) {
            throw JSONRPCError(RPC_DESERIALIZATION_ERROR, strprintf("TX decode failed for tx %d. Make sure the tx has at least one input.", idx));
        }
    }

    if (txVariants.empty()) {
        throw JSONRPCError(RPC_DESERIALIZATION_ERROR, "Missing transactions");
    }

    // mergedTx will end up with all the signatures; it
    // starts as a clone of the rawtx:
    CMutableTransaction mergedTx(txVariants[0]);

    // Fetch previous transactions (inputs):
    CCoinsView viewDummy;
    CCoinsViewCache view(&viewDummy);
    {
        NodeContext& node = EnsureAnyNodeContext(request.context);
        const CTxMemPool& mempool = EnsureMemPool(node);
        ChainstateManager& chainman = EnsureChainman(node);
        LOCK2(cs_main, mempool.cs);
        CCoinsViewCache &viewChain = chainman.ActiveChainstate().CoinsTip();
        CCoinsViewMemPool viewMempool(&viewChain, mempool);
        view.SetBackend(viewMempool); // temporarily switch cache backend to db+mempool view

        for (const CTxIn& txin : mergedTx.vin) {
            view.AccessCoin(txin.prevout); // Load entries from viewChain into view; can fail.
        }

        view.SetBackend(viewDummy); // switch back to avoid locking mempool for too long
    }

    // Use CTransaction for the constant parts of the
    // transaction to avoid rehashing.
    const CTransaction txConst(mergedTx);
    // Sign what we can:
    for (unsigned int i = 0; i < mergedTx.vin.size(); i++) {
        CTxIn& txin = mergedTx.vin[i];
        const Coin& coin = view.AccessCoin(txin.prevout);
        if (coin.IsSpent()) {
            throw JSONRPCError(RPC_VERIFY_ERROR, "Input not found or already spent");
        }
        SignatureData sigdata;

        // ... and merge in other signatures:
        for (const CMutableTransaction& txv : txVariants) {
            if (txv.vin.size() > i) {
                sigdata.MergeSignatureData(DataFromTransaction(txv, i, coin.out));
            }
        }
        ProduceSignature(DUMMY_SIGNING_PROVIDER, MutableTransactionSignatureCreator(&mergedTx, i, coin.out.nValue, 1), coin.out.scriptPubKey, sigdata);

        UpdateInput(txin, sigdata);
    }

    return EncodeHexTx(CTransaction(mergedTx));
},
    };
}

static RPCHelpMan signrawtransactionwithkey()
{
    return RPCHelpMan{"signrawtransactionwithkey",
                "\nSign inputs for raw transaction (serialized, hex-encoded).\n"
                "The second argument is an array of base58-encoded private\n"
                "keys that will be the only keys used to sign the transaction.\n"
                "The third optional argument (may be null) is an array of previous transaction outputs that\n"
                "this transaction depends on but may not yet be in the block chain.\n",
                {
                    {"hexstring", RPCArg::Type::STR, RPCArg::Optional::NO, "The transaction hex string"},
                    {"privkeys", RPCArg::Type::ARR, RPCArg::Optional::NO, "The base58-encoded private keys for signing",
                        {
                            {"privatekey", RPCArg::Type::STR_HEX, RPCArg::Optional::OMITTED, "private key in base58-encoding"},
                        },
                        },
                    {"prevtxs", RPCArg::Type::ARR, RPCArg::Optional::OMITTED_NAMED_ARG, "The previous dependent transaction outputs",
                        {
                            {"", RPCArg::Type::OBJ, RPCArg::Optional::OMITTED, "",
                                {
                                    {"txid", RPCArg::Type::STR_HEX, RPCArg::Optional::NO, "The transaction id"},
                                    {"vout", RPCArg::Type::NUM, RPCArg::Optional::NO, "The output number"},
                                    {"scriptPubKey", RPCArg::Type::STR_HEX, RPCArg::Optional::NO, "script key"},
                                    {"redeemScript", RPCArg::Type::STR_HEX, RPCArg::Optional::OMITTED, "(required for P2SH) redeem script"},
                                    {"witnessScript", RPCArg::Type::STR_HEX, RPCArg::Optional::OMITTED, "(required for P2WSH or P2SH-P2WSH) witness script"},
                                    {"amount", RPCArg::Type::AMOUNT, RPCArg::Optional::OMITTED, "(required for Segwit inputs) the amount spent"},
                                },
                                },
                        },
                        },
                    {"sighashtype", RPCArg::Type::STR, RPCArg::Default{"DEFAULT"}, "The signature hash type. Must be one of:\n"
            "       \"DEFAULT\"\n"
            "       \"ALL\"\n"
            "       \"NONE\"\n"
            "       \"SINGLE\"\n"
            "       \"ALL|ANYONECANPAY\"\n"
            "       \"NONE|ANYONECANPAY\"\n"
            "       \"SINGLE|ANYONECANPAY\"\n"
                    },
                },
                RPCResult{
                    RPCResult::Type::OBJ, "", "",
                    {
                        {RPCResult::Type::STR_HEX, "hex", "The hex-encoded raw transaction with signature(s)"},
                        {RPCResult::Type::BOOL, "complete", "If the transaction has a complete set of signatures"},
                        {RPCResult::Type::ARR, "errors", /* optional */ true, "Script verification errors (if there are any)",
                        {
                            {RPCResult::Type::OBJ, "", "",
                            {
                                {RPCResult::Type::STR_HEX, "txid", "The hash of the referenced, previous transaction"},
                                {RPCResult::Type::NUM, "vout", "The index of the output to spent and used as input"},
                                {RPCResult::Type::ARR, "witness", "",
                                {
                                    {RPCResult::Type::STR_HEX, "witness", ""},
                                }},
                                {RPCResult::Type::STR_HEX, "scriptSig", "The hex-encoded signature script"},
                                {RPCResult::Type::NUM, "sequence", "Script sequence number"},
                                {RPCResult::Type::STR, "error", "Verification or signing error related to the input"},
                            }},
                        }},
                    }
                },
                RPCExamples{
                    HelpExampleCli("signrawtransactionwithkey", "\"myhex\" \"[\\\"key1\\\",\\\"key2\\\"]\"")
            + HelpExampleRpc("signrawtransactionwithkey", "\"myhex\", \"[\\\"key1\\\",\\\"key2\\\"]\"")
                },
        [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
{
    RPCTypeCheck(request.params, {UniValue::VSTR, UniValue::VARR, UniValue::VARR, UniValue::VSTR}, true);

    CMutableTransaction mtx;
    if (!DecodeHexTx(mtx, request.params[0].get_str())) {
        throw JSONRPCError(RPC_DESERIALIZATION_ERROR, "TX decode failed. Make sure the tx has at least one input.");
    }

    FillableSigningProvider keystore;
    const UniValue& keys = request.params[1].get_array();
    for (unsigned int idx = 0; idx < keys.size(); ++idx) {
        UniValue k = keys[idx];
        CKey key = DecodeSecret(k.get_str());
        if (!key.IsValid()) {
            throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Invalid private key");
        }
        keystore.AddKey(key);
    }

    // Fetch previous transactions (inputs):
    std::map<COutPoint, Coin> coins;
    for (const CTxIn& txin : mtx.vin) {
        coins[txin.prevout]; // Create empty map entry keyed by prevout.
    }
    NodeContext& node = EnsureAnyNodeContext(request.context);
    FindCoins(node, coins);

    // Parse the prevtxs array
    ParsePrevouts(request.params[2], &keystore, coins);

    UniValue result(UniValue::VOBJ);
    SignTransaction(mtx, &keystore, coins, request.params[3], result);
    return result;
},
    };
}

static RPCHelpMan sendrawtransaction()
{
    return RPCHelpMan{"sendrawtransaction",
                "\nSubmit a raw transaction (serialized, hex-encoded) to local node and network.\n"
                "\nThe transaction will be sent unconditionally to all peers, so using sendrawtransaction\n"
                "for manual rebroadcast may degrade privacy by leaking the transaction's origin, as\n"
                "nodes will normally not rebroadcast non-wallet transactions already in their mempool.\n"
                "\nA specific exception, RPC_TRANSACTION_ALREADY_IN_CHAIN, may throw if the transaction cannot be added to the mempool.\n"
                "\nRelated RPCs: createrawtransaction, signrawtransactionwithkey\n",
                {
                    {"hexstring", RPCArg::Type::STR_HEX, RPCArg::Optional::NO, "The hex string of the raw transaction"},
                    {"maxfeerate", RPCArg::Type::AMOUNT, RPCArg::Default{FormatMoney(DEFAULT_MAX_RAW_TX_FEE_RATE.GetFeePerK())},
                        "Reject transactions whose fee rate is higher than the specified value, expressed in " + CURRENCY_UNIT +
                            "/kvB.\nSet to 0 to accept any fee rate.\n"},
                },
                RPCResult{
                    RPCResult::Type::STR_HEX, "", "The transaction hash in hex"
                },
                RPCExamples{
            "\nCreate a transaction\n"
            + HelpExampleCli("createrawtransaction", "\"[{\\\"txid\\\" : \\\"mytxid\\\",\\\"vout\\\":0}]\" \"{\\\"myaddress\\\":0.01}\"") +
            "Sign the transaction, and get back the hex\n"
            + HelpExampleCli("signrawtransactionwithwallet", "\"myhex\"") +
            "\nSend the transaction (signed hex)\n"
            + HelpExampleCli("sendrawtransaction", "\"signedhex\"") +
            "\nAs a JSON-RPC call\n"
            + HelpExampleRpc("sendrawtransaction", "\"signedhex\"")
                },
        [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
{
    RPCTypeCheck(request.params, {
        UniValue::VSTR,
        UniValueType(), // VNUM or VSTR, checked inside AmountFromValue()
    });

    CMutableTransaction mtx;
    if (!DecodeHexTx(mtx, request.params[0].get_str())) {
        throw JSONRPCError(RPC_DESERIALIZATION_ERROR, "TX decode failed. Make sure the tx has at least one input.");
    }
    CTransactionRef tx(MakeTransactionRef(std::move(mtx)));

    const CFeeRate max_raw_tx_fee_rate = request.params[1].isNull() ?
                                             DEFAULT_MAX_RAW_TX_FEE_RATE :
                                             CFeeRate(AmountFromValue(request.params[1]));

    int64_t virtual_size = GetVirtualTransactionSize(*tx);
    CAmount max_raw_tx_fee = max_raw_tx_fee_rate.GetFee(virtual_size);

    std::string err_string;
    AssertLockNotHeld(cs_main);
    NodeContext& node = EnsureAnyNodeContext(request.context);
    const TransactionError err = BroadcastTransaction(node, tx, err_string, max_raw_tx_fee, /*relay*/ true, /*wait_callback*/ true);
    if (TransactionError::OK != err) {
        throw JSONRPCTransactionError(err, err_string);
    }

    return tx->GetHash().GetHex();
},
    };
}

static RPCHelpMan testmempoolaccept()
{
    return RPCHelpMan{"testmempoolaccept",
                "\nReturns result of mempool acceptance tests indicating if raw transaction(s) (serialized, hex-encoded) would be accepted by mempool.\n"
                "\nIf multiple transactions are passed in, parents must come before children and package policies apply: the transactions cannot conflict with any mempool transactions or each other.\n"
                "\nIf one transaction fails, other transactions may not be fully validated (the 'allowed' key will be blank).\n"
                "\nThe maximum number of transactions allowed is " + ToString(MAX_PACKAGE_COUNT) + ".\n"
                "\nThis checks if transactions violate the consensus or policy rules.\n"
                "\nSee sendrawtransaction call.\n",
                {
                    {"rawtxs", RPCArg::Type::ARR, RPCArg::Optional::NO, "An array of hex strings of raw transactions.",
                        {
                            {"rawtx", RPCArg::Type::STR_HEX, RPCArg::Optional::OMITTED, ""},
                        },
                        },
                    {"maxfeerate", RPCArg::Type::AMOUNT, RPCArg::Default{FormatMoney(DEFAULT_MAX_RAW_TX_FEE_RATE.GetFeePerK())},
                     "Reject transactions whose fee rate is higher than the specified value, expressed in " + CURRENCY_UNIT + "/kvB\n"},
                },
                RPCResult{
                    RPCResult::Type::ARR, "", "The result of the mempool acceptance test for each raw transaction in the input array.\n"
                        "Returns results for each transaction in the same order they were passed in.\n"
                        "Transactions that cannot be fully validated due to failures in other transactions will not contain an 'allowed' result.\n",
                    {
                        {RPCResult::Type::OBJ, "", "",
                        {
                            {RPCResult::Type::STR_HEX, "txid", "The transaction hash in hex"},
                            {RPCResult::Type::STR_HEX, "wtxid", "The transaction witness hash in hex"},
                            {RPCResult::Type::STR, "package-error", /* optional */ true, "Package validation error, if any (only possible if rawtxs had more than 1 transaction)."},
                            {RPCResult::Type::BOOL, "allowed", /* optional */ true, "Whether this tx would be accepted to the mempool and pass client-specified maxfeerate. "
                                                               "If not present, the tx was not fully validated due to a failure in another tx in the list."},
                            {RPCResult::Type::NUM, "vsize", /* optional */ true, "Virtual transaction size as defined in BIP 141. This is different from actual serialized size for witness transactions as witness data is discounted (only present when 'allowed' is true)"},
                            {RPCResult::Type::OBJ, "fees", /* optional */ true, "Transaction fees (only present if 'allowed' is true)",
                            {
                                {RPCResult::Type::STR_AMOUNT, "base", "transaction fee in " + CURRENCY_UNIT},
                            }},
                            {RPCResult::Type::STR, "reject-reason", /* optional */ true, "Rejection string (only present when 'allowed' is false)"},
                        }},
                    }
                },
                RPCExamples{
            "\nCreate a transaction\n"
            + HelpExampleCli("createrawtransaction", "\"[{\\\"txid\\\" : \\\"mytxid\\\",\\\"vout\\\":0}]\" \"{\\\"myaddress\\\":0.01}\"") +
            "Sign the transaction, and get back the hex\n"
            + HelpExampleCli("signrawtransactionwithwallet", "\"myhex\"") +
            "\nTest acceptance of the transaction (signed hex)\n"
            + HelpExampleCli("testmempoolaccept", R"('["signedhex"]')") +
            "\nAs a JSON-RPC call\n"
            + HelpExampleRpc("testmempoolaccept", "[\"signedhex\"]")
                },
        [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
{
    RPCTypeCheck(request.params, {
        UniValue::VARR,
        UniValueType(), // VNUM or VSTR, checked inside AmountFromValue()
    });
    const UniValue raw_transactions = request.params[0].get_array();
    if (raw_transactions.size() < 1 || raw_transactions.size() > MAX_PACKAGE_COUNT) {
        throw JSONRPCError(RPC_INVALID_PARAMETER,
                           "Array must contain between 1 and " + ToString(MAX_PACKAGE_COUNT) + " transactions.");
    }

    const CFeeRate max_raw_tx_fee_rate = request.params[1].isNull() ?
                                             DEFAULT_MAX_RAW_TX_FEE_RATE :
                                             CFeeRate(AmountFromValue(request.params[1]));

    std::vector<CTransactionRef> txns;
    txns.reserve(raw_transactions.size());
    for (const auto& rawtx : raw_transactions.getValues()) {
        CMutableTransaction mtx;
        if (!DecodeHexTx(mtx, rawtx.get_str())) {
            throw JSONRPCError(RPC_DESERIALIZATION_ERROR,
                               "TX decode failed: " + rawtx.get_str() + " Make sure the tx has at least one input.");
        }
        txns.emplace_back(MakeTransactionRef(std::move(mtx)));
    }

    NodeContext& node = EnsureAnyNodeContext(request.context);
    CTxMemPool& mempool = EnsureMemPool(node);
    ChainstateManager& chainman = EnsureChainman(node);
    CChainState& chainstate = chainman.ActiveChainstate();
    const PackageMempoolAcceptResult package_result = [&] {
        LOCK(::cs_main);
        if (txns.size() > 1) return ProcessNewPackage(chainstate, mempool, txns, /* test_accept */ true);
        return PackageMempoolAcceptResult(txns[0]->GetWitnessHash(),
               chainman.ProcessTransaction(txns[0], /*test_accept=*/ true));
    }();

    UniValue rpc_result(UniValue::VARR);
    // We will check transaction fees while we iterate through txns in order. If any transaction fee
    // exceeds maxfeerate, we will leave the rest of the validation results blank, because it
    // doesn't make sense to return a validation result for a transaction if its ancestor(s) would
    // not be submitted.
    bool exit_early{false};
    for (const auto& tx : txns) {
        UniValue result_inner(UniValue::VOBJ);
        result_inner.pushKV("txid", tx->GetHash().GetHex());
        result_inner.pushKV("wtxid", tx->GetWitnessHash().GetHex());
        if (package_result.m_state.GetResult() == PackageValidationResult::PCKG_POLICY) {
            result_inner.pushKV("package-error", package_result.m_state.GetRejectReason());
        }
        auto it = package_result.m_tx_results.find(tx->GetWitnessHash());
        if (exit_early || it == package_result.m_tx_results.end()) {
            // Validation unfinished. Just return the txid and wtxid.
            rpc_result.push_back(result_inner);
            continue;
        }
        const auto& tx_result = it->second;
        if (tx_result.m_result_type == MempoolAcceptResult::ResultType::VALID) {
            const CAmount fee = tx_result.m_base_fees.value();
            // Check that fee does not exceed maximum fee
            const int64_t virtual_size = tx_result.m_vsize.value();
            const CAmount max_raw_tx_fee = max_raw_tx_fee_rate.GetFee(virtual_size);
            if (max_raw_tx_fee && fee > max_raw_tx_fee) {
                result_inner.pushKV("allowed", false);
                result_inner.pushKV("reject-reason", "max-fee-exceeded");
                exit_early = true;
            } else {
                // Only return the fee and vsize if the transaction would pass ATMP.
                // These can be used to calculate the feerate.
                result_inner.pushKV("allowed", true);
                result_inner.pushKV("vsize", virtual_size);
                UniValue fees(UniValue::VOBJ);
                fees.pushKV("base", ValueFromAmount(fee));
                result_inner.pushKV("fees", fees);
            }
        } else {
            result_inner.pushKV("allowed", false);
            const TxValidationState state = tx_result.m_state;
            if (state.GetResult() == TxValidationResult::TX_MISSING_INPUTS) {
                result_inner.pushKV("reject-reason", "missing-inputs");
            } else {
                result_inner.pushKV("reject-reason", state.GetRejectReason());
            }
        }
        rpc_result.push_back(result_inner);
    }
    return rpc_result;
},
    };
}

static RPCHelpMan decodepsbt()
{
    return RPCHelpMan{"decodepsbt",
                "\nReturn a JSON object representing the serialized, base64-encoded partially signed Bitcoin transaction.\n",
                {
                    {"psbt", RPCArg::Type::STR, RPCArg::Optional::NO, "The PSBT base64 string"},
                },
                RPCResult{
                    RPCResult::Type::OBJ, "", "",
                    {
                        {RPCResult::Type::OBJ, "tx", "The decoded network-serialized unsigned transaction.",
                        {
                            {RPCResult::Type::ELISION, "", "The layout is the same as the output of decoderawtransaction."},
                        }},
                        {RPCResult::Type::OBJ_DYN, "unknown", "The unknown global fields",
                        {
                             {RPCResult::Type::STR_HEX, "key", "(key-value pair) An unknown key-value pair"},
                        }},
                        {RPCResult::Type::ARR, "inputs", "",
                        {
                            {RPCResult::Type::OBJ, "", "",
                            {
                                {RPCResult::Type::OBJ, "non_witness_utxo", /* optional */ true, "Decoded network transaction for non-witness UTXOs",
                                {
                                    {RPCResult::Type::ELISION, "",""},
                                }},
                                {RPCResult::Type::OBJ, "witness_utxo", /* optional */ true, "Transaction output for witness UTXOs",
                                {
                                    {RPCResult::Type::NUM, "amount", "The value in " + CURRENCY_UNIT},
                                    {RPCResult::Type::OBJ, "scriptPubKey", "",
                                    {
                                        {RPCResult::Type::STR, "asm", "The asm"},
                                        {RPCResult::Type::STR_HEX, "hex", "The hex"},
                                        {RPCResult::Type::STR, "type", "The type, eg 'pubkeyhash'"},
                                        {RPCResult::Type::STR, "address", /* optional */ true, "The Bitcoin address (only if a well-defined address exists)"},
                                    }},
                                }},
                                {RPCResult::Type::OBJ_DYN, "partial_signatures", /* optional */ true, "",
                                {
                                    {RPCResult::Type::STR, "pubkey", "The public key and signature that corresponds to it."},
                                }},
                                {RPCResult::Type::STR, "sighash", /* optional */ true, "The sighash type to be used"},
                                {RPCResult::Type::OBJ, "redeem_script", /* optional */ true, "",
                                {
                                    {RPCResult::Type::STR, "asm", "The asm"},
                                    {RPCResult::Type::STR_HEX, "hex", "The hex"},
                                    {RPCResult::Type::STR, "type", "The type, eg 'pubkeyhash'"},
                                }},
                                {RPCResult::Type::OBJ, "witness_script", /* optional */ true, "",
                                {
                                    {RPCResult::Type::STR, "asm", "The asm"},
                                    {RPCResult::Type::STR_HEX, "hex", "The hex"},
                                    {RPCResult::Type::STR, "type", "The type, eg 'pubkeyhash'"},
                                }},
                                {RPCResult::Type::ARR, "bip32_derivs", /* optional */ true, "",
                                {
                                    {RPCResult::Type::OBJ, "", "",
                                    {
                                        {RPCResult::Type::STR, "pubkey", "The public key with the derivation path as the value."},
                                        {RPCResult::Type::STR, "master_fingerprint", "The fingerprint of the master key"},
                                        {RPCResult::Type::STR, "path", "The path"},
                                    }},
                                }},
                                {RPCResult::Type::OBJ, "final_scriptSig", /* optional */ true, "",
                                {
                                    {RPCResult::Type::STR, "asm", "The asm"},
                                    {RPCResult::Type::STR, "hex", "The hex"},
                                }},
                                {RPCResult::Type::ARR, "final_scriptwitness", /* optional */ true, "",
                                {
                                    {RPCResult::Type::STR_HEX, "", "hex-encoded witness data (if any)"},
                                }},
                                {RPCResult::Type::OBJ_DYN, "unknown", /* optional */ true, "The unknown global fields",
                                {
                                    {RPCResult::Type::STR_HEX, "key", "(key-value pair) An unknown key-value pair"},
                                }},
                            }},
                        }},
                        {RPCResult::Type::ARR, "outputs", "",
                        {
                            {RPCResult::Type::OBJ, "", "",
                            {
                                {RPCResult::Type::OBJ, "redeem_script", /* optional */ true, "",
                                {
                                    {RPCResult::Type::STR, "asm", "The asm"},
                                    {RPCResult::Type::STR_HEX, "hex", "The hex"},
                                    {RPCResult::Type::STR, "type", "The type, eg 'pubkeyhash'"},
                                }},
                                {RPCResult::Type::OBJ, "witness_script", /* optional */ true, "",
                                {
                                    {RPCResult::Type::STR, "asm", "The asm"},
                                    {RPCResult::Type::STR_HEX, "hex", "The hex"},
                                    {RPCResult::Type::STR, "type", "The type, eg 'pubkeyhash'"},
                                }},
                                {RPCResult::Type::ARR, "bip32_derivs", /* optional */ true, "",
                                {
                                    {RPCResult::Type::OBJ, "", "",
                                    {
                                        {RPCResult::Type::STR, "pubkey", "The public key this path corresponds to"},
                                        {RPCResult::Type::STR, "master_fingerprint", "The fingerprint of the master key"},
                                        {RPCResult::Type::STR, "path", "The path"},
                                    }},
                                }},
                                {RPCResult::Type::OBJ_DYN, "unknown", /* optional */ true, "The unknown global fields",
                                {
                                    {RPCResult::Type::STR_HEX, "key", "(key-value pair) An unknown key-value pair"},
                                }},
                            }},
                        }},
                        {RPCResult::Type::STR_AMOUNT, "fee", /* optional */ true, "The transaction fee paid if all UTXOs slots in the PSBT have been filled."},
                    }
                },
                RPCExamples{
                    HelpExampleCli("decodepsbt", "\"psbt\"")
                },
        [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
{
    RPCTypeCheck(request.params, {UniValue::VSTR});

    // Unserialize the transactions
    PartiallySignedTransaction psbtx;
    std::string error;
    if (!DecodeBase64PSBT(psbtx, request.params[0].get_str(), error)) {
        throw JSONRPCError(RPC_DESERIALIZATION_ERROR, strprintf("TX decode failed %s", error));
    }

    UniValue result(UniValue::VOBJ);

    // Add the decoded tx
    UniValue tx_univ(UniValue::VOBJ);
    TxToUniv(CTransaction(*psbtx.tx), uint256(), tx_univ, false);
    result.pushKV("tx", tx_univ);

    // Unknown data
    UniValue unknowns(UniValue::VOBJ);
    for (auto entry : psbtx.unknown) {
        unknowns.pushKV(HexStr(entry.first), HexStr(entry.second));
    }
    result.pushKV("unknown", unknowns);

    // inputs
    CAmount total_in = 0;
    bool have_all_utxos = true;
    UniValue inputs(UniValue::VARR);
    for (unsigned int i = 0; i < psbtx.inputs.size(); ++i) {
        const PSBTInput& input = psbtx.inputs[i];
        UniValue in(UniValue::VOBJ);
        // UTXOs
        bool have_a_utxo = false;
        CTxOut txout;
        if (!input.witness_utxo.IsNull()) {
            txout = input.witness_utxo;

            UniValue o(UniValue::VOBJ);
            ScriptPubKeyToUniv(txout.scriptPubKey, o, /* include_hex */ true);

            UniValue out(UniValue::VOBJ);
            out.pushKV("amount", ValueFromAmount(txout.nValue));
            out.pushKV("scriptPubKey", o);

            in.pushKV("witness_utxo", out);

            have_a_utxo = true;
        }
        if (input.non_witness_utxo) {
            txout = input.non_witness_utxo->vout[psbtx.tx->vin[i].prevout.n];

            UniValue non_wit(UniValue::VOBJ);
            TxToUniv(*input.non_witness_utxo, uint256(), non_wit, false);
            in.pushKV("non_witness_utxo", non_wit);

            have_a_utxo = true;
        }
        if (have_a_utxo) {
            if (MoneyRange(txout.nValue) && MoneyRange(total_in + txout.nValue)) {
                total_in += txout.nValue;
            } else {
                // Hack to just not show fee later
                have_all_utxos = false;
            }
        } else {
            have_all_utxos = false;
        }

        // Partial sigs
        if (!input.partial_sigs.empty()) {
            UniValue partial_sigs(UniValue::VOBJ);
            for (const auto& sig : input.partial_sigs) {
                partial_sigs.pushKV(HexStr(sig.second.first), HexStr(sig.second.second));
            }
            in.pushKV("partial_signatures", partial_sigs);
        }

        // Sighash
        if (input.sighash_type > 0) {
            in.pushKV("sighash", SighashToStr((unsigned char)input.sighash_type));
        }

        // Redeem script and witness script
        if (!input.redeem_script.empty()) {
            UniValue r(UniValue::VOBJ);
            ScriptToUniv(input.redeem_script, r);
            in.pushKV("redeem_script", r);
        }
        if (!input.witness_script.empty()) {
            UniValue r(UniValue::VOBJ);
            ScriptToUniv(input.witness_script, r);
            in.pushKV("witness_script", r);
        }

        // keypaths
        if (!input.hd_keypaths.empty()) {
            UniValue keypaths(UniValue::VARR);
            for (auto entry : input.hd_keypaths) {
                UniValue keypath(UniValue::VOBJ);
                keypath.pushKV("pubkey", HexStr(entry.first));

                keypath.pushKV("master_fingerprint", strprintf("%08x", ReadBE32(entry.second.fingerprint)));
                keypath.pushKV("path", WriteHDKeypath(entry.second.path));
                keypaths.push_back(keypath);
            }
            in.pushKV("bip32_derivs", keypaths);
        }

        // Final scriptSig and scriptwitness
        if (!input.final_script_sig.empty()) {
            UniValue scriptsig(UniValue::VOBJ);
            scriptsig.pushKV("asm", ScriptToAsmStr(input.final_script_sig, true));
            scriptsig.pushKV("hex", HexStr(input.final_script_sig));
            in.pushKV("final_scriptSig", scriptsig);
        }
        if (!input.final_script_witness.IsNull()) {
            UniValue txinwitness(UniValue::VARR);
            for (const auto& item : input.final_script_witness.stack) {
                txinwitness.push_back(HexStr(item));
            }
            in.pushKV("final_scriptwitness", txinwitness);
        }

        // Unknown data
        if (input.unknown.size() > 0) {
            UniValue unknowns(UniValue::VOBJ);
            for (auto entry : input.unknown) {
                unknowns.pushKV(HexStr(entry.first), HexStr(entry.second));
            }
            in.pushKV("unknown", unknowns);
        }

        inputs.push_back(in);
    }
    result.pushKV("inputs", inputs);

    // outputs
    CAmount output_value = 0;
    UniValue outputs(UniValue::VARR);
    for (unsigned int i = 0; i < psbtx.outputs.size(); ++i) {
        const PSBTOutput& output = psbtx.outputs[i];
        UniValue out(UniValue::VOBJ);
        // Redeem script and witness script
        if (!output.redeem_script.empty()) {
            UniValue r(UniValue::VOBJ);
            ScriptToUniv(output.redeem_script, r);
            out.pushKV("redeem_script", r);
        }
        if (!output.witness_script.empty()) {
            UniValue r(UniValue::VOBJ);
            ScriptToUniv(output.witness_script, r);
            out.pushKV("witness_script", r);
        }

        // keypaths
        if (!output.hd_keypaths.empty()) {
            UniValue keypaths(UniValue::VARR);
            for (auto entry : output.hd_keypaths) {
                UniValue keypath(UniValue::VOBJ);
                keypath.pushKV("pubkey", HexStr(entry.first));
                keypath.pushKV("master_fingerprint", strprintf("%08x", ReadBE32(entry.second.fingerprint)));
                keypath.pushKV("path", WriteHDKeypath(entry.second.path));
                keypaths.push_back(keypath);
            }
            out.pushKV("bip32_derivs", keypaths);
        }

        // Unknown data
        if (output.unknown.size() > 0) {
            UniValue unknowns(UniValue::VOBJ);
            for (auto entry : output.unknown) {
                unknowns.pushKV(HexStr(entry.first), HexStr(entry.second));
            }
            out.pushKV("unknown", unknowns);
        }

        outputs.push_back(out);

        // Fee calculation
        if (MoneyRange(psbtx.tx->vout[i].nValue) && MoneyRange(output_value + psbtx.tx->vout[i].nValue)) {
            output_value += psbtx.tx->vout[i].nValue;
        } else {
            // Hack to just not show fee later
            have_all_utxos = false;
        }
    }
    result.pushKV("outputs", outputs);
    if (have_all_utxos) {
        result.pushKV("fee", ValueFromAmount(total_in - output_value));
    }

    return result;
},
    };
}

static RPCHelpMan combinepsbt()
{
    return RPCHelpMan{"combinepsbt",
                "\nCombine multiple partially signed Bitcoin transactions into one transaction.\n"
                "Implements the Combiner role.\n",
                {
                    {"txs", RPCArg::Type::ARR, RPCArg::Optional::NO, "The base64 strings of partially signed transactions",
                        {
                            {"psbt", RPCArg::Type::STR, RPCArg::Optional::OMITTED, "A base64 string of a PSBT"},
                        },
                        },
                },
                RPCResult{
                    RPCResult::Type::STR, "", "The base64-encoded partially signed transaction"
                },
                RPCExamples{
                    HelpExampleCli("combinepsbt", R"('["mybase64_1", "mybase64_2", "mybase64_3"]')")
                },
        [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
{
    RPCTypeCheck(request.params, {UniValue::VARR}, true);

    // Unserialize the transactions
    std::vector<PartiallySignedTransaction> psbtxs;
    UniValue txs = request.params[0].get_array();
    if (txs.empty()) {
        throw JSONRPCError(RPC_INVALID_PARAMETER, "Parameter 'txs' cannot be empty");
    }
    for (unsigned int i = 0; i < txs.size(); ++i) {
        PartiallySignedTransaction psbtx;
        std::string error;
        if (!DecodeBase64PSBT(psbtx, txs[i].get_str(), error)) {
            throw JSONRPCError(RPC_DESERIALIZATION_ERROR, strprintf("TX decode failed %s", error));
        }
        psbtxs.push_back(psbtx);
    }

    PartiallySignedTransaction merged_psbt;
    const TransactionError error = CombinePSBTs(merged_psbt, psbtxs);
    if (error != TransactionError::OK) {
        throw JSONRPCTransactionError(error);
    }

    CDataStream ssTx(SER_NETWORK, PROTOCOL_VERSION);
    ssTx << merged_psbt;
    return EncodeBase64(ssTx);
},
    };
}

static RPCHelpMan finalizepsbt()
{
    return RPCHelpMan{"finalizepsbt",
                "Finalize the inputs of a PSBT. If the transaction is fully signed, it will produce a\n"
                "network serialized transaction which can be broadcast with sendrawtransaction. Otherwise a PSBT will be\n"
                "created which has the final_scriptSig and final_scriptWitness fields filled for inputs that are complete.\n"
                "Implements the Finalizer and Extractor roles.\n",
                {
                    {"psbt", RPCArg::Type::STR, RPCArg::Optional::NO, "A base64 string of a PSBT"},
                    {"extract", RPCArg::Type::BOOL, RPCArg::Default{true}, "If true and the transaction is complete,\n"
            "                             extract and return the complete transaction in normal network serialization instead of the PSBT."},
                },
                RPCResult{
                    RPCResult::Type::OBJ, "", "",
                    {
                        {RPCResult::Type::STR, "psbt", /* optional */ true, "The base64-encoded partially signed transaction if not extracted"},
                        {RPCResult::Type::STR_HEX, "hex", /* optional */ true, "The hex-encoded network transaction if extracted"},
                        {RPCResult::Type::BOOL, "complete", "If the transaction has a complete set of signatures"},
                    }
                },
                RPCExamples{
                    HelpExampleCli("finalizepsbt", "\"psbt\"")
                },
        [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
{
    RPCTypeCheck(request.params, {UniValue::VSTR, UniValue::VBOOL}, true);

    // Unserialize the transactions
    PartiallySignedTransaction psbtx;
    std::string error;
    if (!DecodeBase64PSBT(psbtx, request.params[0].get_str(), error)) {
        throw JSONRPCError(RPC_DESERIALIZATION_ERROR, strprintf("TX decode failed %s", error));
    }

    bool extract = request.params[1].isNull() || (!request.params[1].isNull() && request.params[1].get_bool());

    CMutableTransaction mtx;
    bool complete = FinalizeAndExtractPSBT(psbtx, mtx);

    UniValue result(UniValue::VOBJ);
    CDataStream ssTx(SER_NETWORK, PROTOCOL_VERSION);
    std::string result_str;

    if (complete && extract) {
        ssTx << mtx;
        result_str = HexStr(ssTx);
        result.pushKV("hex", result_str);
    } else {
        ssTx << psbtx;
        result_str = EncodeBase64(ssTx.str());
        result.pushKV("psbt", result_str);
    }
    result.pushKV("complete", complete);

    return result;
},
    };
}

static RPCHelpMan createpsbt()
{
    return RPCHelpMan{"createpsbt",
                "\nCreates a transaction in the Partially Signed Transaction format.\n"
                "Implements the Creator role.\n",
                CreateTxDoc(),
                RPCResult{
                    RPCResult::Type::STR, "", "The resulting raw transaction (base64-encoded string)"
                },
                RPCExamples{
                    HelpExampleCli("createpsbt", "\"[{\\\"txid\\\":\\\"myid\\\",\\\"vout\\\":0}]\" \"[{\\\"data\\\":\\\"00010203\\\"}]\"")
                },
        [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
{

    RPCTypeCheck(request.params, {
        UniValue::VARR,
        UniValueType(), // ARR or OBJ, checked later
        UniValue::VNUM,
        UniValue::VBOOL,
        }, true
    );

    bool rbf = false;
    if (!request.params[3].isNull()) {
        rbf = request.params[3].isTrue();
    }
    CMutableTransaction rawTx = ConstructTransaction(request.params[0], request.params[1], request.params[2], rbf);

    // Make a blank psbt
    PartiallySignedTransaction psbtx;
    psbtx.tx = rawTx;
    for (unsigned int i = 0; i < rawTx.vin.size(); ++i) {
        psbtx.inputs.push_back(PSBTInput());
    }
    for (unsigned int i = 0; i < rawTx.vout.size(); ++i) {
        psbtx.outputs.push_back(PSBTOutput());
    }

    // Serialize the PSBT
    CDataStream ssTx(SER_NETWORK, PROTOCOL_VERSION);
    ssTx << psbtx;

    return EncodeBase64(ssTx);
},
    };
}

static RPCHelpMan converttopsbt()
{
    return RPCHelpMan{"converttopsbt",
                "\nConverts a network serialized transaction to a PSBT. This should be used only with createrawtransaction and fundrawtransaction\n"
                "createpsbt and walletcreatefundedpsbt should be used for new applications.\n",
                {
                    {"hexstring", RPCArg::Type::STR_HEX, RPCArg::Optional::NO, "The hex string of a raw transaction"},
                    {"permitsigdata", RPCArg::Type::BOOL, RPCArg::Default{false}, "If true, any signatures in the input will be discarded and conversion\n"
                            "                              will continue. If false, RPC will fail if any signatures are present."},
                    {"iswitness", RPCArg::Type::BOOL, RPCArg::DefaultHint{"depends on heuristic tests"}, "Whether the transaction hex is a serialized witness transaction.\n"
                        "If iswitness is not present, heuristic tests will be used in decoding.\n"
                        "If true, only witness deserialization will be tried.\n"
                        "If false, only non-witness deserialization will be tried.\n"
                        "This boolean should reflect whether the transaction has inputs\n"
                        "(e.g. fully valid, or on-chain transactions), if known by the caller."
                    },
                },
                RPCResult{
                    RPCResult::Type::STR, "", "The resulting raw transaction (base64-encoded string)"
                },
                RPCExamples{
                            "\nCreate a transaction\n"
                            + HelpExampleCli("createrawtransaction", "\"[{\\\"txid\\\":\\\"myid\\\",\\\"vout\\\":0}]\" \"[{\\\"data\\\":\\\"00010203\\\"}]\"") +
                            "\nConvert the transaction to a PSBT\n"
                            + HelpExampleCli("converttopsbt", "\"rawtransaction\"")
                },
        [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
{
    RPCTypeCheck(request.params, {UniValue::VSTR, UniValue::VBOOL, UniValue::VBOOL}, true);

    // parse hex string from parameter
    CMutableTransaction tx;
    bool permitsigdata = request.params[1].isNull() ? false : request.params[1].get_bool();
    bool witness_specified = !request.params[2].isNull();
    bool iswitness = witness_specified ? request.params[2].get_bool() : false;
    const bool try_witness = witness_specified ? iswitness : true;
    const bool try_no_witness = witness_specified ? !iswitness : true;
    if (!DecodeHexTx(tx, request.params[0].get_str(), try_no_witness, try_witness)) {
        throw JSONRPCError(RPC_DESERIALIZATION_ERROR, "TX decode failed");
    }

    // Remove all scriptSigs and scriptWitnesses from inputs
    for (CTxIn& input : tx.vin) {
        if ((!input.scriptSig.empty() || !input.scriptWitness.IsNull()) && !permitsigdata) {
            throw JSONRPCError(RPC_DESERIALIZATION_ERROR, "Inputs must not have scriptSigs and scriptWitnesses");
        }
        input.scriptSig.clear();
        input.scriptWitness.SetNull();
    }

    // Make a blank psbt
    PartiallySignedTransaction psbtx;
    psbtx.tx = tx;
    for (unsigned int i = 0; i < tx.vin.size(); ++i) {
        psbtx.inputs.push_back(PSBTInput());
    }
    for (unsigned int i = 0; i < tx.vout.size(); ++i) {
        psbtx.outputs.push_back(PSBTOutput());
    }

    // Serialize the PSBT
    CDataStream ssTx(SER_NETWORK, PROTOCOL_VERSION);
    ssTx << psbtx;

    return EncodeBase64(ssTx);
},
    };
}

static RPCHelpMan utxoupdatepsbt()
{
    return RPCHelpMan{"utxoupdatepsbt",
            "\nUpdates all segwit inputs and outputs in a PSBT with data from output descriptors, the UTXO set or the mempool.\n",
            {
                {"psbt", RPCArg::Type::STR, RPCArg::Optional::NO, "A base64 string of a PSBT"},
                {"descriptors", RPCArg::Type::ARR, RPCArg::Optional::OMITTED_NAMED_ARG, "An array of either strings or objects", {
                    {"", RPCArg::Type::STR, RPCArg::Optional::OMITTED, "An output descriptor"},
                    {"", RPCArg::Type::OBJ, RPCArg::Optional::OMITTED, "An object with an output descriptor and extra information", {
                         {"desc", RPCArg::Type::STR, RPCArg::Optional::NO, "An output descriptor"},
                         {"range", RPCArg::Type::RANGE, RPCArg::Default{1000}, "Up to what index HD chains should be explored (either end or [begin,end])"},
                    }},
                }},
            },
            RPCResult {
                    RPCResult::Type::STR, "", "The base64-encoded partially signed transaction with inputs updated"
            },
            RPCExamples {
                HelpExampleCli("utxoupdatepsbt", "\"psbt\"")
            },
        [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
{
    RPCTypeCheck(request.params, {UniValue::VSTR, UniValue::VARR}, true);

    // Unserialize the transactions
    PartiallySignedTransaction psbtx;
    std::string error;
    if (!DecodeBase64PSBT(psbtx, request.params[0].get_str(), error)) {
        throw JSONRPCError(RPC_DESERIALIZATION_ERROR, strprintf("TX decode failed %s", error));
    }

    // Parse descriptors, if any.
    FlatSigningProvider provider;
    if (!request.params[1].isNull()) {
        auto descs = request.params[1].get_array();
        for (size_t i = 0; i < descs.size(); ++i) {
            EvalDescriptorStringOrObject(descs[i], provider);
        }
    }
    // We don't actually need private keys further on; hide them as a precaution.
    HidingSigningProvider public_provider(&provider, /*hide_secret=*/true, /*hide_origin=*/false);

    // Fetch previous transactions (inputs):
    CCoinsView viewDummy;
    CCoinsViewCache view(&viewDummy);
    {
        NodeContext& node = EnsureAnyNodeContext(request.context);
        const CTxMemPool& mempool = EnsureMemPool(node);
        ChainstateManager& chainman = EnsureChainman(node);
        LOCK2(cs_main, mempool.cs);
        CCoinsViewCache &viewChain = chainman.ActiveChainstate().CoinsTip();
        CCoinsViewMemPool viewMempool(&viewChain, mempool);
        view.SetBackend(viewMempool); // temporarily switch cache backend to db+mempool view

        for (const CTxIn& txin : psbtx.tx->vin) {
            view.AccessCoin(txin.prevout); // Load entries from viewChain into view; can fail.
        }

        view.SetBackend(viewDummy); // switch back to avoid locking mempool for too long
    }

    // Fill the inputs
    const PrecomputedTransactionData txdata = PrecomputePSBTData(psbtx);
    for (unsigned int i = 0; i < psbtx.tx->vin.size(); ++i) {
        PSBTInput& input = psbtx.inputs.at(i);

        if (input.non_witness_utxo || !input.witness_utxo.IsNull()) {
            continue;
        }

        const Coin& coin = view.AccessCoin(psbtx.tx->vin[i].prevout);

        if (IsSegWitOutput(provider, coin.out.scriptPubKey)) {
            input.witness_utxo = coin.out;
        }

        // Update script/keypath information using descriptor data.
        // Note that SignPSBTInput does a lot more than just constructing ECDSA signatures
        // we don't actually care about those here, in fact.
        SignPSBTInput(public_provider, psbtx, i, &txdata, /*sighash=*/1);
    }

    // Update script/keypath information using descriptor data.
    for (unsigned int i = 0; i < psbtx.tx->vout.size(); ++i) {
        UpdatePSBTOutput(public_provider, psbtx, i);
    }

    CDataStream ssTx(SER_NETWORK, PROTOCOL_VERSION);
    ssTx << psbtx;
    return EncodeBase64(ssTx);
},
    };
}

static RPCHelpMan joinpsbts()
{
    return RPCHelpMan{"joinpsbts",
            "\nJoins multiple distinct PSBTs with different inputs and outputs into one PSBT with inputs and outputs from all of the PSBTs\n"
            "No input in any of the PSBTs can be in more than one of the PSBTs.\n",
            {
                {"txs", RPCArg::Type::ARR, RPCArg::Optional::NO, "The base64 strings of partially signed transactions",
                    {
                        {"psbt", RPCArg::Type::STR, RPCArg::Optional::NO, "A base64 string of a PSBT"}
                    }}
            },
            RPCResult {
                    RPCResult::Type::STR, "", "The base64-encoded partially signed transaction"
            },
            RPCExamples {
                HelpExampleCli("joinpsbts", "\"psbt\"")
            },
        [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
{
    RPCTypeCheck(request.params, {UniValue::VARR}, true);

    // Unserialize the transactions
    std::vector<PartiallySignedTransaction> psbtxs;
    UniValue txs = request.params[0].get_array();

    if (txs.size() <= 1) {
        throw JSONRPCError(RPC_INVALID_PARAMETER, "At least two PSBTs are required to join PSBTs.");
    }

    uint32_t best_version = 1;
    uint32_t best_locktime = 0xffffffff;
    for (unsigned int i = 0; i < txs.size(); ++i) {
        PartiallySignedTransaction psbtx;
        std::string error;
        if (!DecodeBase64PSBT(psbtx, txs[i].get_str(), error)) {
            throw JSONRPCError(RPC_DESERIALIZATION_ERROR, strprintf("TX decode failed %s", error));
        }
        psbtxs.push_back(psbtx);
        // Choose the highest version number
        if (static_cast<uint32_t>(psbtx.tx->nVersion) > best_version) {
            best_version = static_cast<uint32_t>(psbtx.tx->nVersion);
        }
        // Choose the lowest lock time
        if (psbtx.tx->nLockTime < best_locktime) {
            best_locktime = psbtx.tx->nLockTime;
        }
    }

    // Create a blank psbt where everything will be added
    PartiallySignedTransaction merged_psbt;
    merged_psbt.tx = CMutableTransaction();
    merged_psbt.tx->nVersion = static_cast<int32_t>(best_version);
    merged_psbt.tx->nLockTime = best_locktime;

    // Merge
    for (auto& psbt : psbtxs) {
        for (unsigned int i = 0; i < psbt.tx->vin.size(); ++i) {
            if (!merged_psbt.AddInput(psbt.tx->vin[i], psbt.inputs[i])) {
                throw JSONRPCError(RPC_INVALID_PARAMETER, strprintf("Input %s:%d exists in multiple PSBTs", psbt.tx->vin[i].prevout.hash.ToString(), psbt.tx->vin[i].prevout.n));
            }
        }
        for (unsigned int i = 0; i < psbt.tx->vout.size(); ++i) {
            merged_psbt.AddOutput(psbt.tx->vout[i], psbt.outputs[i]);
        }
        merged_psbt.unknown.insert(psbt.unknown.begin(), psbt.unknown.end());
    }

    // Generate list of shuffled indices for shuffling inputs and outputs of the merged PSBT
    std::vector<int> input_indices(merged_psbt.inputs.size());
    std::iota(input_indices.begin(), input_indices.end(), 0);
    std::vector<int> output_indices(merged_psbt.outputs.size());
    std::iota(output_indices.begin(), output_indices.end(), 0);

    // Shuffle input and output indices lists
    Shuffle(input_indices.begin(), input_indices.end(), FastRandomContext());
    Shuffle(output_indices.begin(), output_indices.end(), FastRandomContext());

    PartiallySignedTransaction shuffled_psbt;
    shuffled_psbt.tx = CMutableTransaction();
    shuffled_psbt.tx->nVersion = merged_psbt.tx->nVersion;
    shuffled_psbt.tx->nLockTime = merged_psbt.tx->nLockTime;
    for (int i : input_indices) {
        shuffled_psbt.AddInput(merged_psbt.tx->vin[i], merged_psbt.inputs[i]);
    }
    for (int i : output_indices) {
        shuffled_psbt.AddOutput(merged_psbt.tx->vout[i], merged_psbt.outputs[i]);
    }
    shuffled_psbt.unknown.insert(merged_psbt.unknown.begin(), merged_psbt.unknown.end());

    CDataStream ssTx(SER_NETWORK, PROTOCOL_VERSION);
    ssTx << shuffled_psbt;
    return EncodeBase64(ssTx);
},
    };
}

static RPCHelpMan analyzepsbt()
{
    return RPCHelpMan{"analyzepsbt",
            "\nAnalyzes and provides information about the current status of a PSBT and its inputs\n",
            {
                {"psbt", RPCArg::Type::STR, RPCArg::Optional::NO, "A base64 string of a PSBT"}
            },
            RPCResult {
                RPCResult::Type::OBJ, "", "",
                {
                    {RPCResult::Type::ARR, "inputs", /* optional */ true, "",
                    {
                        {RPCResult::Type::OBJ, "", "",
                        {
                            {RPCResult::Type::BOOL, "has_utxo", "Whether a UTXO is provided"},
                            {RPCResult::Type::BOOL, "is_final", "Whether the input is finalized"},
                            {RPCResult::Type::OBJ, "missing", /* optional */ true, "Things that are missing that are required to complete this input",
                            {
                                {RPCResult::Type::ARR, "pubkeys", /* optional */ true, "",
                                {
                                    {RPCResult::Type::STR_HEX, "keyid", "Public key ID, hash160 of the public key, of a public key whose BIP 32 derivation path is missing"},
                                }},
                                {RPCResult::Type::ARR, "signatures", /* optional */ true, "",
                                {
                                    {RPCResult::Type::STR_HEX, "keyid", "Public key ID, hash160 of the public key, of a public key whose signature is missing"},
                                }},
                                {RPCResult::Type::STR_HEX, "redeemscript", /* optional */ true, "Hash160 of the redeemScript that is missing"},
                                {RPCResult::Type::STR_HEX, "witnessscript", /* optional */ true, "SHA256 of the witnessScript that is missing"},
                            }},
                            {RPCResult::Type::STR, "next", /* optional */ true, "Role of the next person that this input needs to go to"},
                        }},
                    }},
                    {RPCResult::Type::NUM, "estimated_vsize", /* optional */ true, "Estimated vsize of the final signed transaction"},
                    {RPCResult::Type::STR_AMOUNT, "estimated_feerate", /* optional */ true, "Estimated feerate of the final signed transaction in " + CURRENCY_UNIT + "/kvB. Shown only if all UTXO slots in the PSBT have been filled"},
                    {RPCResult::Type::STR_AMOUNT, "fee", /* optional */ true, "The transaction fee paid. Shown only if all UTXO slots in the PSBT have been filled"},
                    {RPCResult::Type::STR, "next", "Role of the next person that this psbt needs to go to"},
                    {RPCResult::Type::STR, "error", /* optional */ true, "Error message (if there is one)"},
                }
            },
            RPCExamples {
                HelpExampleCli("analyzepsbt", "\"psbt\"")
            },
        [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
{
    RPCTypeCheck(request.params, {UniValue::VSTR});

    // Unserialize the transaction
    PartiallySignedTransaction psbtx;
    std::string error;
    if (!DecodeBase64PSBT(psbtx, request.params[0].get_str(), error)) {
        throw JSONRPCError(RPC_DESERIALIZATION_ERROR, strprintf("TX decode failed %s", error));
    }

    PSBTAnalysis psbta = AnalyzePSBT(psbtx);

    UniValue result(UniValue::VOBJ);
    UniValue inputs_result(UniValue::VARR);
    for (const auto& input : psbta.inputs) {
        UniValue input_univ(UniValue::VOBJ);
        UniValue missing(UniValue::VOBJ);

        input_univ.pushKV("has_utxo", input.has_utxo);
        input_univ.pushKV("is_final", input.is_final);
        input_univ.pushKV("next", PSBTRoleName(input.next));

        if (!input.missing_pubkeys.empty()) {
            UniValue missing_pubkeys_univ(UniValue::VARR);
            for (const CKeyID& pubkey : input.missing_pubkeys) {
                missing_pubkeys_univ.push_back(HexStr(pubkey));
            }
            missing.pushKV("pubkeys", missing_pubkeys_univ);
        }
        if (!input.missing_redeem_script.IsNull()) {
            missing.pushKV("redeemscript", HexStr(input.missing_redeem_script));
        }
        if (!input.missing_witness_script.IsNull()) {
            missing.pushKV("witnessscript", HexStr(input.missing_witness_script));
        }
        if (!input.missing_sigs.empty()) {
            UniValue missing_sigs_univ(UniValue::VARR);
            for (const CKeyID& pubkey : input.missing_sigs) {
                missing_sigs_univ.push_back(HexStr(pubkey));
            }
            missing.pushKV("signatures", missing_sigs_univ);
        }
        if (!missing.getKeys().empty()) {
            input_univ.pushKV("missing", missing);
        }
        inputs_result.push_back(input_univ);
    }
    if (!inputs_result.empty()) result.pushKV("inputs", inputs_result);

    if (psbta.estimated_vsize != std::nullopt) {
        result.pushKV("estimated_vsize", (int)*psbta.estimated_vsize);
    }
    if (psbta.estimated_feerate != std::nullopt) {
        result.pushKV("estimated_feerate", ValueFromAmount(psbta.estimated_feerate->GetFeePerK()));
    }
    if (psbta.fee != std::nullopt) {
        result.pushKV("fee", ValueFromAmount(*psbta.fee));
    }
    result.pushKV("next", PSBTRoleName(psbta.next));
    if (!psbta.error.empty()) {
        result.pushKV("error", psbta.error);
    }

    return result;
},
    };
}

void RegisterRawTransactionRPCCommands(CRPCTable &t)
{
// clang-format off
static const CRPCCommand commands[] =
{ //  category               actor (function)
  //  ---------------------  -----------------------
    { "rawtransactions",     &getrawtransaction,          },
    { "rawtransactions",     &createrawtransaction,       },
    { "rawtransactions",     &decoderawtransaction,       },
    { "rawtransactions",     &decodescript,               },
    { "rawtransactions",     &sendrawtransaction,         },
    { "rawtransactions",     &combinerawtransaction,      },
    { "rawtransactions",     &signrawtransactionwithkey,  },
    { "rawtransactions",     &testmempoolaccept,          },
    { "rawtransactions",     &decodepsbt,                 },
    { "rawtransactions",     &combinepsbt,                },
    { "rawtransactions",     &finalizepsbt,               },
    { "rawtransactions",     &createpsbt,                 },
    { "rawtransactions",     &converttopsbt,              },
    { "rawtransactions",     &utxoupdatepsbt,             },
    { "rawtransactions",     &joinpsbts,                  },
    { "rawtransactions",     &analyzepsbt,                },

    { "blockchain",          &gettxoutproof,              },
    { "blockchain",          &verifytxoutproof,           },
};
// clang-format on
    for (const auto& c : commands) {
        t.appendCommand(c.name, &c);
    }
}