> Any application that could be done on a blockchain could be better done on a centralized database. Except crime. Actually, you can have private digital curre

> Any application that could be done on a blockchain could be better done on a centralized database. Except crime. Actually, you can have private digital currency without a blockchain that would be perfectly usable for crime. You'd need a server coordinating a scheme like that of https://www.chaum.com/publications/Chaum-blind-signatures.PDF https://www.chaum.com/publications/Chaum-blind-signatures.PD..., preferably accessed through Tor for additional privacy.