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
publish · Wise Lending V2
- Sequence
- #1
- Score
- →
- Cluster
- mainnet-beta
- Slot
- 422969568
- Off-chain at
- 2026-05-29T15:54:32.121Z
- Anchored at
- —
- Block time
- —
Independent verification
- 1. Database (off-chain)
- XjLtCCFQqFp6uhudZfWGLzRA7pr96222qayE9TaMoZZ
- 2. Recomputed (your browser)
- computing…
- 3. On-chain (Solana memo)
- fetching…
Canonical bytes hashed (5102 chars)
{"actor":"system:backfill","investigation_id":"7bbe4d9d-74e7-4ff7-b64b-d7a630072930","kind":"publish","page_slug":"wise-lending-v2","published_at":"2026-05-29T15:54:32.049Z","sequence_num":1,"snapshot":{"content_type":"investigation","entity_name":"Wise Lending V2","sections":[{"content":"","heading":"","severity":"medium","sources":[{"credibility":3,"name":"https://wiselending.com/","type":"other","url":""},{"credibility":3,"name":"https://defillama.com/protocol/wise-lending-v2","type":"other","url":""}]},{"content":"","heading":"","severity":"medium","sources":[{"credibility":3,"name":"https://blog.solidityscan.com/wise-lending-hack-analysis-f652f389e397","type":"other","url":""},{"credibility":3,"name":"https://medium.com/@astrasec/wiselending-hack-root-cause-analysis-1a2762f52298","type":"other","url":""},{"credibility":3,"name":"https://www.fxstreet.com/cryptocurrencies/news/wise-lending-market-exploited-for-177-eth-in-a-flash-loan-attack-202401130252","type":"other","url":""},{"credibility":3,"name":"https://coincodecap.com/wise-lending-faces-440k-loss-in-suspected-flash-loan-exploit-of-crypto-assets","type":"other","url":""},{"credibility":3,"name":"https://www.infect3d.xyz/blog/wise-lending-post-mortem","type":"other","url":""}]},{"content":"","heading":"","severity":"medium","sources":[{"credibility":3,"name":"https://cointelegraph.com/news/wise-lending-drained-440k-crypto-apparent-flash-loan-exploit","type":"other","url":""},{"credibility":3,"name":"https://coincodecap.com/wise-lending-faces-440k-loss-in-suspected-flash-loan-exploit-of-crypto-assets","type":"other","url":""},{"credibility":3,"name":"https://cryptorank.io/news/feed/62124-wise-lending-loses-400000-flash-loan-attack","type":"other","url":""}]},{"content":"","heading":"","severity":"medium","sources":[{"credibility":3,"name":"https://code4rena.com/reports/2024-02-wise-lending","type":"other","url":""},{"credibility":3,"name":"https://code4rena.com/audits/2024-02-wise-lending","type":"other","url":""},{"credibility":3,"name":"https://github.com/code-423n4/2024-02-wise-lending","type":"other","url":""}]},{"content":"","heading":"","severity":"medium","sources":[{"credibility":3,"name":"https://blog.solidityscan.com/wise-lending-hack-analysis-f652f389e397","type":"other","url":""},{"credibility":3,"name":"https://medium.com/@astrasec/wiselending-hack-root-cause-analysis-1a2762f52298","type":"other","url":""},{"credibility":3,"name":"https://www.infect3d.xyz/blog/wise-lending-post-mortem","type":"other","url":""},{"credibility":3,"name":"https://code4rena.com/reports/2024-02-wise-lending","type":"other","url":""}]},{"content":"","heading":"","severity":"medium","sources":[{"credibility":3,"name":"https://defillama.com/protocol/wise-lending-v2","type":"other","url":""},{"credibility":3,"name":"https://code4rena.com/reports/2024-02-wise-lending","type":"other","url":""},{"credibility":3,"name":"https://cryptorank.io/news/feed/62124-wise-lending-loses-400000-flash-loan-attack","type":"other","url":""},{"credibility":3,"name":"https://coinpaper.com/3049/major-incidents-from-last-week-wise-lending-exploit-and-xai-token-rug-pull","type":"other","url":""}]}],"sources_used":[],"summary":"Wise Lending V2 is a decentralized lending and yield-farm aggregator protocol deployed on Ethereum and Arbitrum that allows users to supply crypto assets and earn variable yields. The protocol suffered two confirmed exploits: a price manipulation attack in October 2023 that caused approximately $260,000 in losses, followed by a more severe flash loan and share-inflation attack on January 12, 2024 that drained approximately $464,000. The January 2024 attack exploited a precision flaw in the protocol's ERC-4626-style share accounting logic, and a subsequent Code4rena audit in February 2024 identified 5 high-severity and 17 medium-severity vulnerabilities in the codebase.","timeline":[{"date":"2023-10-13","event":"Wise Lending suffers its first confirmed exploit — a price manipulation attack — resulting in approximately $260,000 in losses.","source":""},{"date":"2024-01-12","event":"Wise Lending V2 exploited via flash loan and ERC-4626 share inflation attack. Approximately 177 ETH (~$464,000) drained from the PLP-stETH-Dec2025 pool. Attacker contract: 0x91c49cc7fbfe8f70aceeb075952cd64817f9d82c. Exploit first reported on-chain by researcher Spreek.","source":""},{"date":"2024-02-21","event":"Code4rena competitive audit of Wise Lending V2 begins, covering 44 smart contracts and 6,326 lines of Solidity.","source":""},{"date":"2024-03-11","event":"Code4rena audit concludes. Report identifies 5 HIGH-severity and 17 MEDIUM-severity vulnerabilities.","source":""},{"date":"2024-03-11","event":"Code4rena audit report for Wise Lending V2 published, detailing 22 unique vulnerabilities in the protocol codebase.","source":""},{"date":"2026-02-28","event":"A $66,000 flash loan exploit affecting Wise Lending V2 on both Arbitrum and Ethereum chains is recorded by DeFiLlama's hack tracker. Independent news confirmation was not located at time of investigation.","source":""}]},"v":1}