Together with W3C's draft Decentralized Identifiers (DID: 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.
Together with W3C's draft Decentralized Identifiers (DID: 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.
Edit: updated description.