Tweetkeep proof for X post 1089158253437546496 by @citizenlab
https://x.com/citizenlab/status/1089158253437546496
First archived 2026-10-22 12:31 UTC

Post text, saved 2026-10-22 12:31 UTC
  File     https://tweetkeep.com/proof/1089158253437546496/text
  SHA-256  c272dde9f391c6ffbc9affc72d7a63eb332a5921c8723f7f8b2ec61d670e04f6
  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 12:30 UTC  https://tweetkeep.com/warc/2931.warc.gz
    SHA-256  e51fbba21d2fe2e8048990acf6ce5f28797c4bd152f555c86829dab69c87586a
    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