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
- 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. - 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.
- 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 · Hivemapper
- Sequence
- #4
- Score
- 68 → 68 (0)
- Cluster
- mainnet-beta
- Slot
- 445508412
- Off-chain at
- 2026-09-09T03:05:31.607Z
- Anchored at
- —
- Block time
- —
Independent verification
- 1. Database (off-chain)
- 9KekTz62wNFdEUMUUtJyxcpRf6hvNhAitu8d9L4iEsfg
- 2. Recomputed (your browser)
- computing…
- 3. On-chain (Solana memo)
- fetching…
Canonical bytes hashed (703 chars)
{"actor":"reviewer","artifact_identity":"e13fc2d8f312892049d58505a1b1d2d1","decided_at":"2026-09-07T16:17:27.823231+00:00","decision":"review","findings_count":19,"findings_rows_hash":"5e96c59b132ec87f856dfce8406ade273a694980832e31835e29e15d87fe7b4b","investigation_id":"411bc74f-c2f4-4e43-8c11-322c05b89423","mode":"findings_only_retroactive","new_score":68,"page_content_hash":"11159757451964b054082b45d7c54c62f75fe38bcc5baa1fe2f12052f66dcf26","page_slug":"hivemapper","prev_score":68,"reason":"Findings-only fact-check (retroactive anchor of stored findings)","score_delta":0,"sequence_num":4,"submission_content_hash":null,"submission_id":null,"submission_kind":null,"submission_valence":null,"v":1}