ActivityPub, a protocol for decentralized, federated social networks, has been accepted by the W3C as a standard.
ActivityPub provides two layers: a server-to-server so federated websites can share information between them and client-to-server protocol so users can send, delete or modify data.
ActivityPub is based on the protocol that powers GNUSocial and Mastodon.
tl;dr, now there's a standard for descentralized social media.