Tweetkeep proof for X post 1224789513244958721 by @citizenlab
https://x.com/citizenlab/status/1224789513244958721
First archived 2026-10-22 11:59 UTC

Post text, saved 2026-10-22 11:59 UTC
  File     https://tweetkeep.com/proof/1224789513244958721/text
  SHA-256  9e489035dae74fc77c18d3a0a6a0099d3df15bbc77f9fe30f131b05b31468cd4
  Listed in https://tweetkeep.com/data/proofs/2026-10-22T1250.txt
  Bitcoin timestamp of that list: https://tweetkeep.com/data/proofs/2026-10-22T1250.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 11:58 UTC  https://tweetkeep.com/warc/2856.warc.gz
    SHA-256  f25ea2882a232ee04034982c09a0bacc3fd54aef5bba62d576d2bea62c94c67a
    Listed in https://tweetkeep.com/data/proofs/2026-10-22T1250.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