Tweetkeep proof for X post 880401895617122304 by @citizenlab
https://x.com/citizenlab/status/880401895617122304
First archived 2026-10-22 13:31 UTC

Post text, saved 2026-10-22 13:31 UTC
  File     https://tweetkeep.com/proof/880401895617122304/text
  SHA-256  e8431b52cda59c1063dfc55315a3c477c129638ee06f08ec8546d4946b117739
  Listed in https://tweetkeep.com/data/proofs/2026-10-22T1350.txt
  Bitcoin timestamp of that list: https://tweetkeep.com/data/proofs/2026-10-22T1350.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 13:31 UTC  https://tweetkeep.com/warc/3066.warc.gz
    SHA-256  dc4ecc910383bfc1ec60190a1ed7e02b808a48e3f94e4409ad67db089f2c3357
    Listed in https://tweetkeep.com/data/proofs/2026-10-22T1350.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