>> Has this ever actually been used for anything legal?
See the cases by/against Craig Wright who falsely claimed to be the originator of Bitcoin and not a mere contributor (and whether he made contributions that made a real impact is also in question). The Blockchain provided mathematical proof that Craig Wright is a fraud. The very private key Wright claimed to own was used to post on the Satoshi Blockchain: "Craig Wright is a fraud" which absolutely nuked Wright in court.
So, yes, in the biggest way possibly possible on a cosmic scale.
Proof of Existence has been used for evidence in courts for much less interesting things. It's been old news for a while now.
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>> "It's proof because I said it's proof, and you have to trust me on that mr judge"
This objectively tells everyone reading this you don't already comprehend what SHA256 and SHA512 are, which is what you should be embarrassed of.
Not the part that these hashes posted alongside filenames of their respective files on the Satoshi Blockchain has been used for real-world applications for over a decade, which you should have uncovered in a web search I suggested you do in my previous comment, which you obviously did not do.
It's fine, everyone has to start somewhere. And you learned something today, unless this discussion has rustled your jimmies such that this opportunity for your learning and improvement is self-blocked, which given this is "Hacker News" and not Facebook, and we are total strangers to each other, would be even more embarrassing...
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I will save this thread as a PDF and put the PDF's sha512 hash on the Satoshi Blockchain so that everyone for all eternity can know at around this time you posted dumb things in an arrogant manner on this thread.
You are living in a Blockchain era. This is how powerful Blockchains really are. Neat how that works innit.
