What else does Bitcoin have that is "innovative"? It's simply document
timestamping service, and about the only thing that was new about it was
decentralization.
yes, irrevocable timestamped database using proof of work algorithms
Irrevocability is implied by how cryptographic timestamping works in general,
database is an implementation detail, and proof of work is not a benefit, but
a (high) price to pay for lack of central coordination. I think you should
tone down your admiration for blockchain.