[nerdponx]

What are the equivalents with cryptocurrencies/blockchains?

They aren't nearly as tangible. The big innovation here is the blockchain tech itself -- a distributed, immutable, public ledger. It's a very specific innovation, and it mostly benefits big businesses, but it's an innovation nonetheless.

[eru]

Git (and similar) had that for ages. The technical innovation is in particular combination of proof-of-work with the hash chain.

But of course the social innovation might have been to make that long established technology cool and popular.