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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.

Sequence
#1
Score
Cluster
mainnet-beta
Slot
420910772
Off-chain at
2026-05-20T04:09:21.461Z
Anchored at
Block time

Independent verification

1. Database (off-chain)
44ZcJojr3oLvdZcUjvkG34ZcQyouM9Mpw8PWdr7QuVCh
2. Recomputed (your browser)
computing…
3. On-chain (Solana memo)
fetching…
Canonical bytes hashed (5322 chars)
{"actor":"system:backfill","investigation_id":"26bce48e-5acc-4bbb-a451-cca47010ca11","kind":"publish","page_slug":"m2-exchange","published_at":"2026-05-20T04:09:21.219Z","sequence_num":1,"snapshot":{"content_type":"investigation","entity_name":"M2 Exchange","sections":[{"content":"","heading":"","severity":"medium","sources":[{"credibility":3,"name":"","type":"other","url":"https://beincrypto.com/learn/m2-review/"},{"credibility":3,"name":"","type":"other","url":"https://www.adgm.com/media/announcements/virtual-assets-trading-platform-m2-receives-financial-services-permission-from-adgm"},{"credibility":3,"name":"","type":"other","url":"https://www.fintechfutures.com/job-cuts-new-hires/crypto-platform-m2-reshuffles-leadership-with-ex-bitstamp-exec-james-greenwood-named-ceo"},{"credibility":3,"name":"","type":"other","url":"https://skynet.certik.com/projects/m2-exchange"}]},{"content":"","heading":"","severity":"medium","sources":[{"credibility":3,"name":"","type":"other","url":"https://cryptoslate.com/uaes-m2-crypto-exchange-hacked-for-13-7m-assures-full-fund-recovery/"},{"credibility":3,"name":"","type":"other","url":"https://www.quillaudits.com/blog/hack-analysis/m2-crypto-exchange-exploit"},{"credibility":3,"name":"","type":"other","url":"https://www.web3isgoinggreat.com/single/m2-hack"},{"credibility":3,"name":"","type":"other","url":"https://protos.com/crypto-exchange-m2-reimburses-victims-after-14m-halloween-hack/"},{"credibility":3,"name":"","type":"other","url":"https://www.cryptopolitan.com/m2-exchange-reports-hack-restores-13-7m-in-eth-sol-and-btc/"}]},{"content":"","heading":"","severity":"medium","sources":[{"credibility":3,"name":"","type":"other","url":"https://www.adgm.com/media/announcements/virtual-assets-trading-platform-m2-receives-financial-services-permission-from-adgm"},{"credibility":3,"name":"","type":"other","url":"https://www.adgm.com/media/announcements/m2-secures-adgm-licence-and-plans-rollout-of-fully-regulated-crypto-services-to-uae"},{"credibility":3,"name":"","type":"other","url":"https://www.thenationalnews.com/business/money/2023/10/11/adgm-licensed-m2-crypto-platform-rolls-out-services-for-investors/"}]},{"content":"","heading":"","severity":"medium","sources":[{"credibility":3,"name":"","type":"other","url":"https://beincrypto.com/learn/m2-review/"},{"credibility":3,"name":"","type":"other","url":"https://www.ccn.com/news/crypto/crypto-exchange-m2-security-breach/"},{"credibility":3,"name":"","type":"other","url":"https://www.quillaudits.com/blog/hack-analysis/m2-crypto-exchange-exploit"},{"credibility":3,"name":"","type":"other","url":"https://skynet.certik.com/projects/m2-exchange"}]},{"content":"","heading":"","severity":"medium","sources":[{"credibility":3,"name":"","type":"other","url":"https://www.quillaudits.com/blog/hack-analysis/m2-crypto-exchange-exploit"},{"credibility":3,"name":"","type":"other","url":"https://cryptoslate.com/uaes-m2-crypto-exchange-hacked-for-13-7m-assures-full-fund-recovery/"},{"credibility":3,"name":"","type":"other","url":"https://www.adgm.com/media/announcements/virtual-assets-trading-platform-m2-receives-financial-services-permission-from-adgm"},{"credibility":3,"name":"","type":"other","url":"https://www.fxleaders.com/news/2024/11/02/crypto-exchange-m2-recovers-13-7-million-after-breach-resolved-in-16-minutes/"}]}],"sources_used":[],"summary":"M2 Exchange is an Abu Dhabi-based centralized cryptocurrency exchange licensed by the ADGM FSRA that suffered a $13.7 million hot wallet breach on October 31, 2024, attributed to an access control vulnerability spanning Bitcoin, Ethereum, and Solana. The exchange claims to have covered all customer losses from company reserves within hours of the incident, though the lack of a public post-mortem and two CEO transitions within eighteen months raise unresolved transparency questions.","timeline":[{"date":"2023-08-16","event":"ADGM FSRA grants M2 Limited and M2 Custody Limited Financial Services Permission to operate an MTF and custody service in Abu Dhabi.","source":""},{"date":"2023-10-01","event":"M2 Exchange publicly launches retail and institutional services, initially offering BTC and ETH trading with AED fiat pairs.","source":""},{"date":"2024-10-15","event":"Stefan Kimmel steps down as CEO and moves to the M2 Board of Directors; Saadeddine Zaher appointed CEO.","source":""},{"date":"2024-10-31","event":"Attacker exploits hot wallet access control vulnerability at approximately 3:16 AM, draining ~$13.7M across Bitcoin, Ethereum, and Solana chains.","source":""},{"date":"2024-10-31","event":"M2 claims the breach was contained within 16 minutes; exchange covers all customer losses from company reserves and states services are restored.","source":""},{"date":"2024-11-01","event":"M2 issues public statement confirming the incident, stating cooperation with UAE legal and regulatory authorities and implementing enhanced security controls.","source":""},{"date":"2024-11-04","event":"On-chain analysts confirm approximately $10 million in ETH remains unmixed in the attacker's consolidation wallet; no attacker identified.","source":""},{"date":"2025-01-01","event":"James Greenwood, former CTOO of Bitstamp, named CEO of M2, marking a second CEO transition within the platform's first fifteen months.","source":""}]},"v":1}