preciousblock (0.16.2 RPC) blockchain getbestblockhash getblock getblockchaininfo getblockcount getblockhash getblockheader getchaintips getchaintxstats getdifficulty getmempoolancestors getmempooldescendants getmempoolentry getmempoolinfo getrawmempool gettxout gettxoutproof gettxoutsetinfo preciousblock pruneblockchain savemempool verifychain verifytxoutproof control getmemoryinfo help logging stop uptime generating generate generatetoaddress mining getblocktemplate getmininginfo getnetworkhashps prioritisetransaction submitblock network addnode clearbanned disconnectnode getaddednodeinfo getconnectioncount getnettotals getnetworkinfo getpeerinfo listbanned ping setban setnetworkactive rawtransactions combinerawtransaction createrawtransaction decoderawtransaction decodescript fundrawtransaction getrawtransaction sendrawtransaction signrawtransaction util createmultisig estimatefee estimatesmartfee signmessagewithprivkey validateaddress verifymessage wallet abandontransaction abortrescan addmultisigaddress backupwallet bumpfee dumpprivkey dumpwallet encryptwallet getaccount getaccountaddress getaddressesbyaccount getbalance getnewaddress getrawchangeaddress getreceivedbyaccount getreceivedbyaddress gettransaction getunconfirmedbalance getwalletinfo importaddress importmulti importprivkey importprunedfunds importpubkey importwallet keypoolrefill listaccounts listaddressgroupings listlockunspent listreceivedbyaccount listreceivedbyaddress listsinceblock listtransactions listunspent listwallets lockunspent move removeprunedfunds rescanblockchain sendfrom sendmany sendtoaddress setaccount settxfee signmessage walletlock walletpassphrase walletpassphrasechange preciousblock "blockhash" Treats a block as if it were received before others with the same work. A later preciousblock call can override the effect of an earlier one. The effects of preciousblock are not retained across restarts. Arguments: 1. "blockhash" (string, required) the hash of the block to mark as precious Result: Examples: > bitcoin-cli preciousblock "blockhash" > curl --user myusername --data-binary '{"jsonrpc": "1.0", "id":"curltest", "method": "preciousblock", "params": ["blockhash"] }' -H 'content-type: text/plain;' http://127.0.0.1:8332/