[conradludgate]

I don't like the idea of this using bitcoin. I wonder if it's possible to build this off of regular PKI - certificate transparency logs for instance encode the proof of commitment, while the signature can be an X509 certificate.

[sscaryterry]

The standards exist. The problem is, the certificates are not cheap, because there is real KYC needed.

https://en.wikipedia.org/wiki/PAdES