Comment by xvilka

I know Cardano has something similar (not sure how it's anonymized but it operates on the need-to-know basis) called Veridian[1][2]. And, of course, there are identity platforms from Ethereum[3].

[1] https://www.veridian.id/

[2] https://cardanofoundation.org/blog/veridian-digital-identity...

[3] https://ethereum.org/en/decentralized-identity/