gettxspendingprevout

blockchain safe since 24.0.1

scans the mempool to find transactions spending any of the given outputs

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Run this RPC switch to raw JSON

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Replace $BITCOIN_RPC_USER / $BITCOIN_RPC_PASSWORD with credentials from your bitcoind's bitcoin.conf, and replace localhost:8332 with your node's RPC address.

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gettxspendingprevout [{"txid":"hex","vout":n},...]

Scans the mempool to find transactions spending any of the given outputs

Arguments:
1. outputs                 (json array, required) The transaction outputs that we want to check, and within each, the txid (string) vout (numeric).
     [
       {                   (json object)
         "txid": "hex",    (string, required) The transaction id
         "vout": n,        (numeric, required) The output number
       },
       ...
     ]

Result:
[                              (json array)
  {                            (json object)
    "txid" : "hex",            (string) the transaction id of the checked output
    "vout" : n,                (numeric) the vout value of the checked output
    "spendingtxid" : "hex"     (string, optional) the transaction id of the mempool transaction spending this output (omitted if unspent)
  },
  ...
]

Examples:
> bitcoin-cli gettxspendingprevout "[{\"txid\":\"a08e6907dbbd3d809776dbfc5d82e371b764ed838b5655e72f463568df1aadf0\",\"vout\":3}]"
> curl --user myusername --data-binary '{"jsonrpc": "1.0", "id": "curltest", "method": "gettxspendingprevout", "params": ["[{\"txid\":\"a08e6907dbbd3d809776dbfc5d82e371b764ed838b5655e72f463568df1aadf0\",\"vout\":3}]"]}' -H 'content-type: text/plain;' http://127.0.0.1:8332/

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