Parameters
Unique identifier for a blockchain network.
Request identifier used to match responses.
JSON-RPC version.
JSON-RPC method name.
Parameters: [psbt, extract?].Positional parameters for
finalizepsbt:params[0]: PSBT base64 string.params[1]: If true, also return the final raw transaction hex.
Returns
Result containing the finalized PSBT and optionally the hex transaction.