def address_to_scriptpubkey(address):
# Raise ValueError if we cannot identify the address.
get_version(address)
try:
version = b58decode_check(address)[:1]
except ValueError:
witver, data = segwit_decode(address)
return segwit_scriptpubkey(witver, data)
if version == MAIN_PUBKEY_HASH or version == TEST_PUBKEY_HASH:
return OP_DUP + OP_HASH160 + OP_PUSH_20 + address_to_public_key_hash(
address) + OP_EQUALVERIFY + OP_CHECKSIG
elif version == MAIN_SCRIPT_HASH or version == TEST_SCRIPT_HASH:
return OP_HASH160 + OP_PUSH_20 + address_to_public_key_hash(
address) + OP_EQUAL
def construct_outputs(outputs):
outputs_obj = []
for data in outputs:
dest, amount = data
# Segwit address (Bech32)
if amount and (dest[0:2] == 'bc' or dest[0:2] == 'tb'):
hrp = dest[0:2]
witver, witprog = segwit_decode(hrp, dest)
script = segwit_scriptpubkey(witver, witprog)
amount = amount.to_bytes(8, byteorder='little')
# P2SH
elif amount and (b58decode_check(dest)[0:1] == MAIN_SCRIPT_HASH
or b58decode_check(dest)[0:1] == TEST_SCRIPT_HASH):
script = (OP_HASH160 + OP_PUSH_20 +
address_to_public_key_hash(dest) + OP_EQUAL)
amount = amount.to_bytes(8, byteorder='little')
# P2PKH
elif amount:
script = (OP_DUP + OP_HASH160 + OP_PUSH_20 +
address_to_public_key_hash(dest) + OP_EQUALVERIFY +
OP_CHECKSIG)
amount = amount.to_bytes(8, byteorder='little')
# Blockchain storage
else:
script = (OP_RETURN + len(dest).to_bytes(1, byteorder='little') +
dest)
amount = b'\x00\x00\x00\x00\x00\x00\x00\x00'
outputs_obj.append(TxOut(amount, script))
return outputs_obj