lockunspent (0.18.0 RPC) blockchain getbestblockhash getblock getblockchaininfo getblockcount getblockhash getblockheader getblockstats getchaintips getchaintxstats getdifficulty getmempoolancestors getmempooldescendants getmempoolentry getmempoolinfo getrawmempool gettxout gettxoutproof gettxoutsetinfo preciousblock pruneblockchain savemempool scantxoutset verifychain verifytxoutproof control getmemoryinfo getrpcinfo help logging stop uptime generating generate generatetoaddress mining getblocktemplate getmininginfo getnetworkhashps prioritisetransaction submitblock submitheader network addnode clearbanned disconnectnode getaddednodeinfo getconnectioncount getnettotals getnetworkinfo getnodeaddresses getpeerinfo listbanned ping setban setnetworkactive rawtransactions analyzepsbt combinepsbt combinerawtransaction converttopsbt createpsbt createrawtransaction decodepsbt decoderawtransaction decodescript finalizepsbt fundrawtransaction getrawtransaction joinpsbts sendrawtransaction signrawtransactionwithkey testmempoolaccept utxoupdatepsbt util createmultisig deriveaddresses estimatesmartfee getdescriptorinfo signmessagewithprivkey validateaddress verifymessage wallet abandontransaction abortrescan addmultisigaddress backupwallet bumpfee createwallet dumpprivkey dumpwallet encryptwallet getaddressesbylabel getaddressinfo getbalance getnewaddress getrawchangeaddress getreceivedbyaddress getreceivedbylabel gettransaction getunconfirmedbalance getwalletinfo importaddress importmulti importprivkey importprunedfunds importpubkey importwallet keypoolrefill listaddressgroupings listlabels listlockunspent listreceivedbyaddress listreceivedbylabel listsinceblock listtransactions listunspent listwalletdir listwallets loadwallet lockunspent removeprunedfunds rescanblockchain sendmany sendtoaddress sethdseed setlabel settxfee signmessage signrawtransactionwithwallet unloadwallet walletcreatefundedpsbt walletlock walletpassphrase walletpassphrasechange walletprocesspsbt zmq getzmqnotifications lockunspent unlock ( [{"txid":"hex","vout":n},...] ) Updates list of temporarily unspendable outputs. Temporarily lock (unlock=false) or unlock (unlock=true) specified transaction outputs. If no transaction outputs are specified when unlocking then all current locked transaction outputs are unlocked. A locked transaction output will not be chosen by automatic coin selection, when spending bitcoins. Locks are stored in memory only. Nodes start with zero locked outputs, and the locked output list is always cleared (by virtue of process exit) when a node stops or fails. Also see the listunspent call Arguments: 1. unlock (boolean, required) Whether to unlock (true) or lock (false) the specified transactions 2. transactions (json array, optional, default=empty array) A json array of objects. Each object the txid (string) vout (numeric). [ { (json object) "txid": "hex", (string, required) The transaction id "vout": n, (numeric, required) The output number }, ... ] Result: true|false (boolean) Whether the command was successful or not Examples: List the unspent transactions > bitcoin-cli listunspent Lock an unspent transaction > bitcoin-cli lockunspent false "[{\"txid\":\"a08e6907dbbd3d809776dbfc5d82e371b764ed838b5655e72f463568df1aadf0\",\"vout\":1}]" List the locked transactions > bitcoin-cli listlockunspent Unlock the transaction again > bitcoin-cli lockunspent true "[{\"txid\":\"a08e6907dbbd3d809776dbfc5d82e371b764ed838b5655e72f463568df1aadf0\",\"vout\":1}]" As a JSON-RPC call > curl --user myusername --data-binary '{"jsonrpc": "1.0", "id":"curltest", "method": "lockunspent", "params": [false, "[{\"txid\":\"a08e6907dbbd3d809776dbfc5d82e371b764ed838b5655e72f463568df1aadf0\",\"vout\":1}]"] }' -H 'content-type: text/plain;' http://127.0.0.1:8332/