Tweetkeep proof for X post 1428363482613776390 by @citizenlab
https://x.com/citizenlab/status/1428363482613776390
First archived 2026-10-22 11:25 UTC

Post text, saved 2026-10-22 11:25 UTC
  File     https://tweetkeep.com/proof/1428363482613776390/text
  SHA-256  031886fe8d7148b2d3fc763928f21fa50f1c17e659c6df892dcc08d48c9b3b38
  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/2781.warc.gz
    SHA-256  b5fc7a6c09d268a149da2c8e6b597110dd32f85db0b9b9890a0a4dbb13dd22f4
    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