Tweetkeep proof for X post 1404815507057000456 by @citizenlab
https://x.com/citizenlab/status/1404815507057000456
First archived 2026-10-22 11:25 UTC

Post text, saved 2026-10-22 11:25 UTC
  File     https://tweetkeep.com/proof/1404815507057000456/text
  SHA-256  663cc83fdff8d1f9a8f5a63d2555338c2c0ba54daa0e3daf69f2ba6c90c43b48
  Listed in https://tweetkeep.com/data/proofs/2026-10-22T1150.txt
  Bitcoin timestamp of that list: https://tweetkeep.com/data/proofs/2026-10-22T1150.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 11:25 UTC  https://tweetkeep.com/warc/2782.warc.gz
    SHA-256  7edcb71c94575ed2e01f49a36a82614e7a974a16076cb82f2e6441bc78aadd23
    Listed in https://tweetkeep.com/data/proofs/2026-10-22T1150.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