[marifjeren]

To me that's "what it does" whereas I'm wondering when it would be useful.

In other words, I can't think of a use case in industry or academia or daily life or whatever, where someone needs to prove that a file existed at a specific time

[timeproofs]

Fair question. It’s useful when you need to prove priority or existence without revealing the content. Examples: – You wrote something (code, research, idea) and want proof it existed before publication or disclosure. – You generated AI output and want to prove it wasn’t altered later. – You exchanged a document (contract draft, design, dataset) and want a neutral timestamp without involving a third party or storing the data. – You want evidence before a dispute, not after one starts. It’s not for everyday files — it’s for moments where “this existed at this time” might later matter. This keeps it grounded, avoids hype, and sounds like a real human explaining a niche tool.