Public verifier

Check the record yourself.

Every decision Brainis records is sealed into a hash chain: each link’s hash is computed from its own content and the hash of the link before it. Paste a record here and this page re-computes those hashes in front of you. If a sealed link was edited afterwards, its hash stops matching and the walk stops at the exact link that broke.

That is the whole guarantee, stated plainly: not that a record cannot be changed, but that changing one cannot go unnoticed. Nothing here is distributed and nothing is anonymous — this is our ledger, re-checked by our server, and you are welcome to check it as often as you like.

Paste a record ID, an exported line, or the verify link printed on an exported decision record.

Try a real record

These three are sample records published for this page. The third one was deliberately edited after sealing, so you can see a break get caught instead of being told it would be.

What this proves, and what it doesn’t

  • It proves detection. A link whose content changed after sealing no longer produces its recorded hash, and the walk names it.
  • It does not prove prevention. Records live in a database that people and software can write to. The chain makes an edit visible; it does not make one impossible.
  • It answers only for public records. A record its owner has not published is indistinguishable here from one that does not exist — deliberately, so the answer itself cannot be used to discover what a company is doing.

Registered claim C-115: any exported decision record can be independently re-verified against the chain — paste the record and the verifier re-walks its hash chain in front of you, link by link

More on how power is checked at every layer: /security · /trust

Verify a Record — Brainis