Did not mean to be dismissive of your point. It is just that the overhang of blockchain as a solution to everything is so prevalent that sometimes need interve

Did not mean to be dismissive of your point. It is just that the overhang of blockchain as a solution to everything is so prevalent that sometimes need intervention. It is true that the cryptographic primitives that blockchain is built on are relevant to many other things that we can do and have done. Blockchain in fact utilizes those properties to build a distributed shared state on which the parties have consensus. That, however, is a very special use case of those primitives. If you need message authentication, digital signatures have done that for decades and you don't need an expensive associated database to accomplish that.