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Verify a decision

Every moderation decision on AVOID.NET is anchored to the Solana blockchain. You don't have to trust us — you can verify cryptographically that we committed to a verdict at a specific moment and have not rewritten it.

How verification works

  1. We commit. When a moderator accepts/rejects a submission, we serialize the decision into deterministic UTF-8 bytes (payload_canonical_string), hash it with SHA-256, encode the digest as base58, and write it to Solana inside an SPL Memo v2 transaction.
  2. We store the bytes. The exact bytes we hashed are stored alongside the decision in our database. Anyone can read them and recompute the hash in any language.
  3. You compare three values. Database hash, your independently-recomputed hash, and the hash inside the on-chain memo. If all three match, the decision is authentic and timestamped.
The on-chain memo format is AVOID.NET|v1|h:<b58-sha256>|d:<id>|t:<iso>

Find a signature on any investigation page's decision log, or run python -m src.verify_decision --signature <sig> for a CLI check.

Decision
review · Underdog Predict
View on Solana ↗
Sequence
#3
Score
56 → 56 (0)
Cluster
mainnet-beta
Slot
462168586
Off-chain at
2026-10-27T18:15:54.881Z
Anchored at
2026-10-27T18:16:03.000Z
Block time
2026-10-27T18:16:03.000Z

Independent verification

1. Database (off-chain)
5metu2f6nDsuWrDhgaqbX2mwBdQNVrd5ysLpwkT4onMN
2. Recomputed (your browser)
computing…
3. On-chain (Solana memo)
fetching…
Canonical bytes hashed (1262 chars)
{"actor":"reviewer","artifact_identity":"6b5dece9d120c766d144d562a9e2af25","decided_at":"2026-10-27T18:15:54.807Z","decision":"review","disputed_pct":0.2857,"findings_hash":"8QsKex51drt6MVFkA2bJQ8TRoWQvhKpkrdA2oaYGchNu","investigation_id":"e5fd887a-c6fc-46c6-a7a5-a8cdb487cba0","judge_def_hash":"8800307026131ea9d5da939d32b9a1f1884b2b84a5de33c8e87931d36f38d0f8","new_score":56,"omissions":{"material":1,"total":1},"page_content_hash":"14a0eff29a75f01d9e2cb9344af3569c29320e01135782474417aeb7c0a3f52e","page_slug":"underdog-predict","prev_score":56,"reason":"The core regulatory narrative (CT and MO cease-and-desist orders, Underdog's preemption suits) is supported by the sources I checked. Several details are unverified or slightly off: the Lamont quote, the CT withdrawal provision, the Missouri 30-day window, and a one-day offset in the suit date. The page omits the pending IG Group acquisition. The DFS history section and several sources were not checked.","reviewer_def_hash":"bc11388ce4bc4deea1b064fea362663ae06e3f4f687f99604769044d6ffba770","score_delta":0,"sequence_num":3,"subject_status":"operating","subject_status_contradicts_page":false,"submission_content_hash":null,"submission_id":null,"submission_kind":null,"submission_valence":null,"v":1}