Psbt
Implements the PSBT creator role; initializes a PSBT for the given unsigned transaction.
Return
the psbt with empty inputs and outputs.
Parameters
tx
unsigned transaction skeleton.
Parameters
global
global psbt data containing the transaction to be signed.
inputs
signing data for each input of the transaction to be signed (order matches the unsigned tx).
outputs
signing data for each output of the transaction to be signed (order matches the unsigned tx).