def validate_key(key):
'''Check the validity of a key or an address'''
# Optional dependencies if unused
import pycoin.key
import cashaddr
if ':' in key:
key = key.split(':')[1]
if key[0] in '13x':
try:
pycoin.key.Key.from_text(key)
except pycoin.encoding.EncodingError:
return False
elif key[0] in 'qpQP':
try:
cashaddr.decode('bitcoincash:' + key.lower())
except ValueError:
return False
else:
return False
return True
def convert_address(address):
'''Convert an address back and forth between cash and legacy formats'''
# Optional dependencies if unused
import pycoin.key
import cashaddr
if address[0] in '13':
subkey = pycoin.key.Key.from_text(address)
return cashaddr.encode('bitcoincash', 0, subkey.hash160())
elif address[0] in 'qpQP':
subkey = cashaddr.decode('bitcoincash:' + address.lower())[2]
return pycoin.key.Key(hash160=subkey).address()
else:
raise ValueError('Unsupported address format')
scriptsig = minpush(bcsig) + minpush(redeemscript)
print("Preimage (%d bytes): %s" % (len(preimage), preimage.hex()))
print("Compressed pubkey (33 bytes): %s" % (cpubkey.hex(), ))
print("Redeemscript (%d bytes): %s" % (len(redeemscript), redeemscript.hex()))
print(" hash: %s" % (rshash.hex(), ))
print(" ", cashaddr.encode_full('bitcoincash', cashaddr.SCRIPT_TYPE,
rshash))
print(" ", cashaddr.encode_full('bchtest', cashaddr.SCRIPT_TYPE,
rshash))
print("ScriptSig (%d bytes): %s" % (len(scriptsig), scriptsig.hex()))
# Make transaction
# funding info
inp = dict(
prevout_hash=bytes.fromhex(
'898e8031163df578acb91931c2da2d0c9ebed6d00b173fd2c1e2556cd5698b11'),
prevout_n=1,
prevout_value=30000000,
scriptsig=scriptsig,
sequence=0xffffffff,
)
out = dict(value=30000000 - 1000,
scriptpubkey=b''.join(
(b'\x76\xa9\x14',
cashaddr.decode(
'bchtest:qq4j8hh0qac4dy8fe9xyhmtvu9spu9w58unf74hkkd')[2],
b'\x88\xac')))
tx = bitcoin.SimpleTx(1, [inp], [out], 0)
print("Transaction:", tx.to_bytes().hex())