ots verify fails if different rpcuser / rpcpassword for mainnet vs regtest in bitcoin.conf

[kristapsk]

My ~/.bitcoin/bitcoin.conf is something like this:

listen=1
server=1

[main]
bind=127.0.0.1
rpcuser=someuser1
rpcpassword=somepass1

[regtest]
bind=127.0.0.1
rpcuser=someuser2
rpcpassword=somepass2

With this setup ots stamp works without any issues, but when later doing ots verify, there's an error:

$ ots --no-cache verify Screenshot_20191222-191656.jpg.ots 
Assuming target filename is 'Screenshot_20191222-191656.jpg'
Got 1 attestation(s) from https://bob.btc.calendar.opentimestamps.org
Got 1 attestation(s) from https://btc.calendar.catallaxy.com
Got 1 attestation(s) from https://alice.btc.calendar.opentimestamps.org
Got 1 attestation(s) from https://finney.calendar.eternitywall.com
Traceback (most recent call last):
  File "/usr/bin/ots", line 11, in <module>
    load_entry_point('opentimestamps-client==0.7.0', 'console_scripts', 'ots')()
  File "/home/user/.local/lib64/python3.6/site-packages/otsclient/ots.py", line 34, in main
    args.cmd_func(args)
  File "/home/user/.local/lib64/python3.6/site-packages/otsclient/cmds.py", line 490, in verify_command
    if not verify_timestamp(detached_timestamp.timestamp, args):
  File "/home/user/.local/lib64/python3.6/site-packages/otsclient/cmds.py", line 412, in verify_timestamp
    block_count = proxy.getblockcount()
  File "/home/user/.local/lib64/python3.6/site-packages/bitcoin/rpc.py", line 460, in getblockcount
    return self._call('getblockcount')
  File "/home/user/.local/lib64/python3.6/site-packages/bitcoin/rpc.py", line 229, in _call
    response = self._get_response()
  File "/home/user/.local/lib64/python3.6/site-packages/bitcoin/rpc.py", line 260, in _get_response
    parse_float=decimal.Decimal)
  File "/usr/lib64/python3.6/json/__init__.py", line 367, in loads
    return cls(**kw).decode(s)
  File "/usr/lib64/python3.6/json/decoder.py", line 339, in decode
    obj, end = self.raw_decode(s, idx=_w(s, 0).end())
  File "/usr/lib64/python3.6/json/decoder.py", line 357, in raw_decode
    raise JSONDecodeError("Expecting value", s, err.value) from None
json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0)

Workaround is to comment out regtest part of bitcoin.conf.

[RCasatta]

I think we don't support the bitcoin conf with sections.

stamp is not using the local node at all, that's why it's working.

[petertodd]

Yup, almost all the ots logic doesn't actually know about mainnet vs testnet/regtest, with the one exception of the RPC and initial python-bitcoinlib setup. Notably, just running ots verify against a non-mainnet timestamp will fail as the timestamp format itself doesn't distinguish between mainnet and testnet/regtest.

The underlying issue here is that python-bitcoinlib's RPC stuff doesn't support sections; just opened an issue: petertodd/python-bitcoinlib#218