RPC Browser

gettxoutproof ["txid",...] ( "blockhash" )

Returns a hex-encoded proof that "txid" was included in a block.

NOTE: By default this function only works sometimes. This is when there is an
unspent output in the utxo for this transaction. To make it always work,
you need to maintain a transaction index, using the -txindex command line option or
specify the block in which the transaction is included manually (by blockhash).

Arguments:
1. txids          (json array, required) The txids to filter
     [
       "txid",    (string) A transaction hash
       ...
     ]
2. blockhash      (string, optional) If specified, looks for txid in the block with this hash

Result:
"str"    (string) A string that is a serialized, hex-encoded data for the proof.

[
    {
        "name": "txids",
        "detailsLines": [
            "     [",
            "       \"txid\",    (string) A transaction hash",
            "       ...",
            "     ]"
        ],
        "properties": [
            "json array",
            "required"
        ],
        "description": "The txids to filter"
    },
    {
        "name": "blockhash",
        "detailsLines": [],
        "properties": [
            "string",
            "optional"
        ],
        "description": "If specified, looks for txid in the block with this hash"
    }
]