These are good questions. I'm not sure. As it was a quick project I didn't start with user research, although remember the people that were interested in it last time I had a similar product were lawyers and their clients who had copyright claims. The ability to use the core technology here–a hash–is on every computer, so you could certainly do this yourself. We just make it easier in terms of interface, using the blockchain as a database of sorts.
Some posts above about alternative ways to do this. I'm not aware of any that integrate with the Finder.
Some posts above about alternative ways to do this. I'm not aware of any that integrate with the Finder.