A verifiable, immutable, distributable, durable, performant data store is the solution for almost nothing? Only if you have no imagination, in my opinion.
“A verifiable, immutable, distributable, durable, performant data store“
Anything digital with checksums is verifiable.
Nothing digital is immutable, but checksums can be used to verify that what you have know is the same as what you had before.
Anything digital is distributable and, if you make enough copies, durable.
FTA: “sometimes a transaction takes nine minutes, sometimes nine days!”. If that’s true, I wouldn’t use “performant” to describe this technology, if used as a ledger.
Finally, git is as verifiable, immutable, distributable and durable as you can get in the digital space, and, used as a ledger, more performant than blockchain (and highly likely not the only example of software that has those properties)
For now the only real applications have been coins (like a distributed bank, but without fraud protection, unless you are the owner), and some automated gambling (did that get traction anyway?).
There where some projects to store messages in he blockchain, but it never got traction (and people really like the idea to erase(hide) their tweets).
