News for hackers. Stuff that matters.
Re:South Park creators have new political satire series with... by drexlspivey on Tuesday November 03, 2020 @02:14PM (#24982896)
Such a system exists, it’s called OpenTimestamps
Re:South Park creators have new political satire series with... by mleonhard on Wednesday November 04, 2020 @03:33AM (#24987318)
Thanks for letting me know. It seems to rely on bitcoin's block timestamps which are accurate within tens of minutes or hours.

https://petertodd.org/2016/opentimestamps-announcement#how-o...