Are there any test vectors for DIP2/DIP4 transactions that have been confirmed on-chain? [python-trezor](https://github.com/trezor/python-trezor/blob/2813522b05cef4e0e545a101f8b3559a3183b45b/trezorlib/tests/device_tests/test_msg_signtx_dash.py#L109) has one, but it does not appear to be a "real" transaction.