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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
publish · eXch
View on Solana ↗
Sequence
#1
Score
Cluster
mainnet-beta
Slot
420667274
Off-chain at
2026-05-19T01:06:46.906Z
Anchored at
Block time

Independent verification

1. Database (off-chain)
Ba1P99415Z7wZgJZEa7GdEw65FfRgsVfHbRQJKN8San
2. Recomputed (your browser)
computing…
3. On-chain (Solana memo)
fetching…
Canonical bytes hashed (5609 chars)
{"actor":"system:backfill","investigation_id":"c22d383f-c503-482c-bedc-43acc00e2689","kind":"publish","page_slug":"exch","published_at":"2026-05-19T01:06:46.826Z","sequence_num":1,"snapshot":{"content_type":"investigation","entity_name":"eXch","sections":[{"content":"","heading":"","severity":"medium","sources":[]},{"content":"","heading":"","severity":"medium","sources":[]},{"content":"","heading":"","severity":"medium","sources":[]},{"content":"","heading":"","severity":"medium","sources":[]},{"content":"","heading":"","severity":"medium","sources":[]}],"sources_used":[],"summary":"eXch (exch.cx) was a no-KYC instant cryptocurrency swap service operating from 2014 until its forced shutdown in May 2025. Registered in Belize under the name Private Project Facilitators LTD, the platform processed an estimated $1.9 billion in total volume, deliberately advertising its absence of anti-money laundering controls on criminal underground forums. German federal law enforcement seized approximately $38 million in cryptocurrency assets and 8 terabytes of data from the platform in April 2025, following evidence linking eXch to laundering roughly $200 million of funds stolen in the $1.46 billion Bybit hack carried out by North Korea's Lazarus Group.","timeline":[{"date":"2014-01-01","event":"eXch launched as a no-KYC instant cryptocurrency swap service, registered in Belize as Private Project Facilitators LTD.","source":"","source_url":"https://www.elliptic.co/blog/the-rise-and-fall-of-exch-the-dark-service-used-by-north-korea-to-launder-200-million-stolen-from-bybit"},{"date":"2017-01-01","event":"eXch allegedly processed funds linked to the Parity Wallet exploit ($17.7 million stolen).","source":"","source_url":"https://www.elliptic.co/blog/the-rise-and-fall-of-exch-the-dark-service-used-by-north-korea-to-launder-200-million-stolen-from-bybit"},{"date":"2023-11-01","event":"eXch publicly posted and rejected subpoenas from New York State and other agencies, publicly boasting of zero compliance with law enforcement since launch.","source":"","source_url":"https://www.elliptic.co/blog/the-rise-and-fall-of-exch-the-dark-service-used-by-north-korea-to-launder-200-million-stolen-from-bybit"},{"date":"2024-02-01","event":"FixedFloat exchange hacked for $26 million; eXch allegedly processed laundered proceeds and refused IRS cooperation on the investigation.","source":"","source_url":"https://www.elliptic.co/blog/the-rise-and-fall-of-exch-the-dark-service-used-by-north-korea-to-launder-200-million-stolen-from-bybit"},{"date":"2025-01-15","event":"eXch issued an open demand letter threatening Elliptic and other blockchain analytics firms over high-risk designations of the platform.","source":"","source_url":"https://www.elliptic.co/blog/the-rise-and-fall-of-exch-the-dark-service-used-by-north-korea-to-launder-200-million-stolen-from-bybit"},{"date":"2025-02-21","event":"Bybit exchange hacked by Lazarus Group (North Korea) for approximately $1.46-1.5 billion in Ethereum — the largest crypto theft in history.","source":"","source_url":"https://www.bleepingcomputer.com/news/security/north-korean-hackers-linked-to-15-billion-bybit-crypto-heist/"},{"date":"2025-02-22","event":"On-chain analyst ZachXBT alleged eXch laundered approximately $35 million of Bybit hack proceeds within hours of the theft; eXch's ETH reserves were observed spiking.","source":"","source_url":"https://www.theblock.co/post/342871/non-kyc-exchange-exch-denies-money-laundering-allegations-as-eth-reserves-spike-following-bybit-hack"},{"date":"2025-03-31","event":"eXch announced a planned merger and infrastructure relocation, citing alleged attacks on its systems.","source":"","source_url":"https://www.elliptic.co/blog/the-rise-and-fall-of-exch-the-dark-service-used-by-north-korea-to-launder-200-million-stolen-from-bybit"},{"date":"2025-04-17","event":"eXch announced it would shut down on May 1, 2025, citing awareness of an 'active transatlantic operation' targeting the platform and potential terrorism financing charges.","source":"","source_url":"https://decrypt.co/315331/crypto-exchange-exch-shutting-down-following-links-to-lazarus-bybit-hack"},{"date":"2025-04-30","event":"Germany's BKA and Frankfurt prosecutors executed the eXch takedown one day before the announced shutdown, seizing all server infrastructure and removing clearnet and dark web domains.","source":"","source_url":"https://www.bleepingcomputer.com/news/security/germany-takes-down-exch-cryptocurrency-exchange-seizes-servers/"},{"date":"2025-05-01","event":"eXch's announced shutdown date; former management transitioned to consulting roles as nominal new leadership took over.","source":"","source_url":"https://www.trmlabs.com/resources/blog/exch-remains-active-despite-shutdown-how-the-bybit-hack-linked-exchange-continues-to-enable-laundering-of-csam-funds"},{"date":"2025-05-05","event":"TRM Labs published findings that eXch continued offering API access to business partners post-shutdown, with on-chain activity consistent with laundering operations still observed.","source":"","source_url":"https://www.trmlabs.com/resources/blog/exch-remains-active-despite-shutdown-how-the-bybit-hack-linked-exchange-continues-to-enable-laundering-of-csam-funds"},{"date":"2025-05-09","event":"BKA and Frankfurt prosecutor publicly announced the eXch seizure: approximately €34 million ($38.25M) in BTC, ETH, LTC, and DASH confiscated, plus 8TB of data — the third-largest crypto asset seizure in BKA history.","source":"","source_url":"https://thehackernews.com/2025/05/germany-shuts-down-exch-over-19b.html"}]},"v":1}