[specialist]

Blockchain (shared tamper-evident ledgers) has many, many use cases.

Cryptocurrency has just one.

[smeej]

Ask the U.S. how important it is to be the world's default currency before you go ignoring the value of getting that one thing right.

[sfblah]

Examples of blockchain use cases?

[constantcrying]

Can you name a concrete example?

I do not count money, as crypt is technically inferior to non-blockchain based digital currencies.