I have been working on this decentralized key-value database: https://github.com/kevacoin-project/kevacoin https://github.com/kevacoin-project/kevacoin Together

I have been working on this decentralized key-value database: https://github.com/kevacoin-project/kevacoin https://github.com/kevacoin-project/kevacoin Together with W3C's draft Decentralized Identifiers (DID: https://www.w3.org/TR/did-core/ https://www.w3.org/TR/did-core/), it could provide a decentralized alternative. Not sure what is the best way to verify Twitter/Github account though. This has to be managed by users themselves. E.g. one user posts a proof in the Twitter account, the other user verifies the proof by checking the proof against the public key posted in the database.