5 ms·

> But how to guarantee that nobody hacks in and figures out how to change a few bytes in one paper that is 10years old? Trusted timestamping. https://www.ietf

> But how to guarantee that nobody hacks in and figures out how to change a few bytes in one paper that is 10years old? Trusted timestamping. https://www.ietf.org/rfc/rfc3161.txt https://www.ietf.org/rfc/rfc3161.txt It also happens to be very widely deployed and supported by well-established companies, because it's an integral part of executable cross-signing. That is, this exists right now.

malikNF 6y ago
Wouldn't saving the hash of the document on some blockchain be a more simpler solution to proving the integrity of a document?
- sdinsn 6y ago
  No, because you need to convince 3rd parties to participate, and you need to convince a majority of these parties to be honest.