Blockchain has extremely narrow potential in a decentralized social network. Blockchain was designed to prevent double-spending. In a social network, the only analagous purpose might be to reserve a name, or to locate the servers (bypass DNS).
It would be ridiculous to use a blockchain to authenticate posts, upvotes, friend connections, etc, since these should all be done with digital signatures alone
It would be ridiculous to use a blockchain to authenticate posts, upvotes, friend connections, etc, since these should all be done with digital signatures alone