Bonus points for writing it digitally and using your favourite proper or janky method of timestamping - dates on paper are meaningless, even with a signature (w

Bonus points for writing it digitally and using your favourite proper or janky method of timestamping - dates on paper are meaningless, even with a signature (which is also meaningless itself). Emailing it to someone seems to be the go-to recommendation online, but you might not want to expose the information at the time. Some alternatives, in descending order of jank: a Google Doc, unlisted Pastebin, either of those but only post the hash and keep the file offline, a proper TSP timestamp - the latter is actually near-trivial these days with something like freeTSA.org.