[jjeaff]

Block chain seems like an overkill solution for this though. I could just use open source software like keepass and sync the encrypted password file to a few different local devices and maybe a cloud backup option. If I can't pay the cloud bill, that's fine, I have a few local backups.

Blockchain's most important feature is the shared ledger. But for a password manager, I don't have anything I need to prove to anyone else.

This seems like a use case much better suited to the BitTorrent protocol than blockchain.

In either case, it seems unwise to put your passwords in the hands of absolutely anyone and everyone even if they are encrypted.