gettxoutproof

blockchain expensive since 0.11.0

returns a hex-encoded proof that one or more specified transactions were included in a block.

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Expensive RPC. CPU- or scan-heavy. Cached and rate-limited per IP to keep the node healthy. Public execution is disabled for this RPC. It will reopen to authenticated users in a future release.

Call from your own code

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. You can't run this RPC against our node, but you can run it against your own bitcoind.

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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"       (string) A json array of 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.

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