Tweetkeep proof for X post 848105340277338113 by @citizenlab
https://x.com/citizenlab/status/848105340277338113
First archived 2026-10-22 13:51 UTC

Post text, saved 2026-10-22 13:51 UTC
  File     https://tweetkeep.com/proof/848105340277338113/text
  SHA-256  28e9251824a9f930e48192dcd893dbf6f434e2d3afcf47d41a451d7456d223a7
  Listed in https://tweetkeep.com/data/proofs/2026-10-22T1450.txt
  Bitcoin timestamp of that list: https://tweetkeep.com/data/proofs/2026-10-22T1450.txt.ots

X's own data for this post as it reached our browser, as WARC records (open with any WARC tool, e.g. https://replayweb.page):
  2026-10-22 13:51 UTC  https://tweetkeep.com/warc/3094.warc.gz
    SHA-256  93d91a441c0169da8d6822243cfa2d8690942b7e09c06dd00a4ca30523c8da23
    Listed in https://tweetkeep.com/data/proofs/2026-10-22T1450.txt

No Internet Archive copy: we ask it for a few hundred fresh posts a day, from the accounts that delete the most. X's data for every post is in the WARC records above.

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