Error in parsing one specific transaction only (edge case?)

[pputnik]

Hello,
I'm using Service.gettransaction(txid) to get a lot of transactions and found one which the library fails to process properly.

Way to test:

from bitcoinlib.services.services import *

srv = Service(network='bitcoin')
txid = "a618dc10b8a1f9d9a1469b3bb84fc17da86df2d51c27e2aa16fa130953840735"
print(srv.gettransaction(txid))   # <=== here returns False

I've traced the flow to /bitcoinlib/scripts.py:

class Script(object):
    def parse_bytesio(...):
         (...)
                if data_type == 'signature':
                    try:
                        sig = Signature.parse_bytes(data)
                        signatures.append(sig)
                        hash_type = sig.hash_type
                        blueprint.append('signature')
                    except Exception as e:
                       # ====== > Here `e` is "Expected a sequence of 69 bytes, got 70"
                        (...)

As far as I see here this transaction looks quite valid.
Could you help, please?

Python 3.11.4
bitcoinlib 0.6.12

[mccwdev]

This transaction contains a non-standard signature, which Bitcoinlib cannot parse. The signature contains an extra byte and is considered invalid with current standards. See https://github.com/bitcoin/bips/blob/master/bip-0066.mediawiki

You can use the strict=False setting to avoid raising errors and continue parsing the rest of the transaction.