def _unpack_proof(raw: bytes) -> TxProof:
io = BytesIO(raw)
pack_version = bitcoinx.read_varint(io.read)
if pack_version == 1:
position = bitcoinx.read_varint(io.read)
branch_count = bitcoinx.read_varint(io.read)
merkle_branch = [
bitcoinx.read_varbytes(io.read) for i in range(branch_count)
]
return TxProof(position, merkle_branch)
raise DataPackingError(f"Unhandled packing format {pack_version}")
def read(cls, read):
prev_hash = read(32)
prev_idx = read_le_uint32(read)
script_sig = Script(read_varbytes(read))
sequence = read_le_uint32(read)
kwargs = {'x_pubkeys': [], 'address': None, 'threshold': 0, 'signatures': []}
if prev_hash != bytes(32):
_parse_script_sig(script_sig.to_bytes(), kwargs)
result = cls(prev_hash, prev_idx, script_sig, sequence, value=0, **kwargs)
if not result.is_complete():
result.value = read_le_int64(read)
return result
