Take a look of GunDB for DB?
Also for binding social account -- maybe take a look of https://Maskbook.com & https://github.com/DimensionDev/Maskbook - able to send encrypted post/comment on fb/twitter etc
Also for binding social account -- maybe take a look of https://Maskbook.com & https://github.com/DimensionDev/Maskbook - able to send encrypted post/comment on fb/twitter etc
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.