markint that you knew something at a certain time, but proving that later
this is useful for things like prior art for patents
Discussion
yeah, i think that you can say that adding a bitcoin block hash to a document makes a definite certainty of the event happening at least after some time
i wonder if there is a tool i can set up to grab the current block hash to my clipboard from a custom keyboard shortcut
putting the document hash on the chain is dumb IMO because that depends on the document being available, and everything is less available than the bitcoin blockchain
one of the key things that people don't understand about nostr is that it is a publish/subscribe system, it is not a unified von neumann style computation system, as in distributed system, it's not meant to have consistency at all, only availability and partition resistance, extremely weak consistency = nostr - by design, and for reasons
no, that’s not useful for the use case here
to prove that a document existed at a certain time *after that time*, the only viable solution is to commit a hash
anyone can look at old block hashes
