most protocols don't need a blockchain but hashcash is still really useful for dealing with spam. sad it's not used more.
@jb55 VDFs can replace it even better in a lot of places
@jb55 lightning is better for that use case; standardized way to get hashcash.
Bitcoin Maston Instance
🇨🇦
@jb55 VDFs can replace it even better in a lot of places