Tweetkeep proof for X post 20 by @jack
https://x.com/jack/status/20
First archived 2026-10-13 17:51 UTC

Post text, saved 2026-10-13 17:51 UTC
  File     https://tweetkeep.com/proof/20/text
  SHA-256  71ada0e983e1f5a18bb50c4249051ddad5a2a5e73f217da682f97b0f5dc8be4a
  Listed in https://tweetkeep.com/data/proofs/2026-10-13T1752.txt
  Bitcoin timestamp of that list: https://tweetkeep.com/data/proofs/2026-10-13T1752.txt.ots

X's own data for this post, saved by the Internet Archive (Wayback Machine), captured 2026-10-20 01:01 UTC:
  https://web.archive.org/web/20261020010127/https://cdn.syndication.twimg.com/tweet-result?id=20&token=6dq1a2xwd93&lang=en

How to check:
1. Download a file above and run: shasum -a 256 <file>. It must print the SHA-256 shown, and that hash must appear in the list.
2. Drop the list and its .ots file on https://opentimestamps.org, or run: ots verify <list>.ots
   That proves the list, and every file whose hash it holds, existed unchanged by then. Fresh timestamps reach Bitcoin within hours.
More: https://tweetkeep.com/faq#proof