Tweetkeep proof for X post 888473232763957251 by @citizenlab
https://x.com/citizenlab/status/888473232763957251
First archived 2026-10-22 13:22 UTC

Post text, saved 2026-10-22 13:22 UTC
  File     https://tweetkeep.com/proof/888473232763957251/text
  SHA-256  7cf52402b9e642cde340e6c33b0753d1e245e6ec18e3d1c2443da6f4e30d4b90
  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 13:21 UTC  https://tweetkeep.com/warc/3047.warc.gz
    SHA-256  211daa2b966bf49a62a3119e50ec5e4e68e5ad50b794b2302542918457227a0d
    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