GnuPG/PGP and the web of trust[0]. A lot of things I see blockchain being used for today (e.g. NFTs) seems like it would be better solved using standard OpenPGP signatures with no backing chain.
Additionally, as machine-generated content proliferates, I think having services use something like the web of trust concept for membership would be super powerful. The problem is, of course, the terrible UX of cryptographic signatures. But I think there's a lot of opportunity for the group that makes it easy to use.
Additionally, as machine-generated content proliferates, I think having services use something like the web of trust concept for membership would be super powerful. The problem is, of course, the terrible UX of cryptographic signatures. But I think there's a lot of opportunity for the group that makes it easy to use.
[0]: https://en.wikipedia.org/wiki/Web_of_trust