Audit log

Every state-changing event for Arcadia V2: moderation decisions on community submissions, plus corrections and updates from the news pipeline. URL-based decisions carry three independent witnesses — the original source, an Internet Archive snapshot taken at submission time, and a Solana memo signed by our publicly-disclosed publisher key.

1. #1publishby system:backfill

   2026-05-26 19:54:34Z
   Score: ? → ? (no score change)
   anchoranchored

   chain

   ●mainnet-betaslot 422,351,505

   sig

   AN8wh5Fjb6cv…od67AJfRcopyexplorer ↗

   hash

   EEgPAbtVXUwh…C9JFbNMRcopysha256 → base58

   verifying row…full verify ↗

   canonical bytes (7450 B) ▸

   {"actor":"system:backfill","investigation_id":"88a00d0e-8123-4c71-9bf7-7827f2bc78d1","kind":"publish","page_slug":"arcadia-v2","published_at":"2026-05-26T19:54:34.334Z","sequence_num":1,"snapshot":{"content_type":"investigation","entity_name":"Arcadia V2","sections":[{"content":"","heading":"","severity":"medium","sources":[{"credibility":3,"name":"https://cointelegraph.com/news/arcadia-finance-hacked-on-ethereum-and-optimism-for-455k","type":"other","url":""},{"credibility":3,"name":"https://arcadiafinance.medium.com/post-mortem-72e9d24a79b0","type":"other","url":""},{"credibility":3,"name":"https://cryptonews.com/news/defi-platform-arcadia-finance-falls-victim-455k-hack-ethereum-optimism/","type":"other","url":""},{"credibility":3,"name":"https://beincrypto.com/defi-arcadia-finance-exploited-455000-tvl/","type":"other","url":""},{"credibility":3,"name":"https://cryptobriefing.com/defi-protocol-hack-drains-455k/","type":"other","url":""},{"credibility":3,"name":"https://coinmarketcap.com/academy/article/arcadia-finance-lost-dollar455k-in-hack-exploiter-contacted","type":"other","url":""}]},{"content":"","heading":"","severity":"medium","sources":[{"credibility":3,"name":"https://www.certik.com/resources/blog/arcadia-incident-analysis-arbitrary-swapData","type":"other","url":""},{"credibility":3,"name":"https://rekt.news/arcadiafi-rekt","type":"other","url":""},{"credibility":3,"name":"https://cryptonews.com/news/hackers-drain-2-5m-from-arcadia-finance-on-base-blockchain-heres-what-happened/","type":"other","url":""},{"credibility":3,"name":"https://www.theblock.co/post/362624/arcadia-hack","type":"other","url":""},{"credibility":3,"name":"https://revoke.cash/exploits/arcadia-finance","type":"other","url":""},{"credibility":3,"name":"https://www.dlnews.com/articles/defi/coinbased-backed-arcadia-finance-offers-hacker-bounty/","type":"other","url":""}]},{"content":"","heading":"","severity":"medium","sources":[{"credibility":3,"name":"https://rekt.news/arcadiafi-rekt","type":"other","url":""},{"credibility":3,"name":"https://docs.arcadia.finance/security-and-risk/audits","type":"other","url":""},{"credibility":3,"name":"https://olympix.security/blog/arcadias-3-6m-exploit-and-how-olympix-would-have-prevented-it","type":"other","url":""},{"credibility":3,"name":"https://www.guardrail.ai/blog/arcadia-finance-hack-july-2025","type":"other","url":""},{"credibility":3,"name":"https://www.quillaudits.com/blog/hack-analysis/arcadia-finance-hack-analysis","type":"other","url":""}]},{"content":"","heading":"","severity":"medium","sources":[{"credibility":3,"name":"https://www.outlookbusiness.com/news/latest-crypto-news-hacker-drains-455k-from-arcadia-s-ethereum-optimism-vaults-zachxbt-s-research-cited-in-canadian-nft-rug-pull-class-action-lawsuit-news-301762","type":"other","url":""},{"credibility":3,"name":"https://cointelegraph.com/news/arcadia-finance-exploit-2-5m-crypto-theft","type":"other","url":""},{"credibility":3,"name":"https://www.coinspeaker.com/arcadia-finance-hacked-for-2-5m-can-it-recover/","type":"other","url":""}]},{"content":"","heading":"","severity":"medium","sources":[{"credibility":3,"name":"https://arcadiafinance.medium.com/introducing-arcadia-v2-79ee345af20b","type":"other","url":""},{"credibility":3,"name":"https://defillama.com/protocol/arcadia-v2","type":"other","url":""},{"credibility":3,"name":"https://www.crunchbase.com/organization/arcadia-finance","type":"other","url":""},{"credibility":3,"name":"https://docs.arcadia.finance/governance/tokenomics","type":"other","url":""},{"credibility":3,"name":"https://icodrops.com/arcadia-finance/","type":"other","url":""},{"credibility":3,"name":"https://hackenproof.com/companies/arcadia-finance","type":"other","url":""}]},{"content":"","heading":"","severity":"medium","sources":[{"credibility":3,"name":"https://defillama.com/protocol/arcadia-v2","type":"other","url":""},{"credibility":3,"name":"https://www.coingecko.com/en/coins/arcadia","type":"other","url":""},{"credibility":3,"name":"https://cryptorank.io/price/arcadia-finance","type":"other","url":""},{"credibility":3,"name":"https://www.dlnews.com/articles/defi/coinbased-backed-arcadia-finance-offers-hacker-bounty/","type":"other","url":""}]}],"sources_used":[],"summary":"Arcadia V2 is a non-custodial leverage farming and liquidity management protocol operating primarily on Base, developed by Belgium-based Arcadia Finance (founded 2021, backed by Coinbase Ventures). The protocol has suffered two serious security exploits: a July 2023 reentrancy attack on its V1 codebase draining approximately $455K across Ethereum and Optimism, and a more severe July 2025 arbitrary calldata exploit on V2's Rebalancer contract that drained approximately $3.6M on Base despite multiple prior audits. ZachXBT has flagged the protocol as a high-risk entity given this pattern of repeated critical security failures.","timeline":[{"date":"2021-01-01","event":"Arcadia Finance founded in Mechelen, Belgium by Jasper Van Pee and Thomas Smets.","source":""},{"date":"2023-07-10","event":"V1 protocol exploited on Ethereum and Optimism via reentrancy attack on liquidateVault() function; approximately $459,030 stolen. PeckShield identifies the attack. Optimism attacker launders ~180 ETH via Tornado Cash.","source":""},{"date":"2023-07-10","event":"Arcadia Finance pauses all contracts, issues on-chain message to attacker demanding return of funds within 24 hours. No funds recovered. TVL drops 76%.","source":""},{"date":"2023-10-01","event":"Arcadia partners with Trust Security for first V2 security review.","source":""},{"date":"2024-01-01","event":"Arcadia V2 audit program begins: Renascence, Pashov Audit Group, and Sherlock contest all review complete V2 codebase in Q1 2024. Pashov internally flags but does not report a vulnerability in SwapLogic._swapViaRouter().","source":""},{"date":"2024-01-01","event":"Arcadia V2 targets Q1 2024 launch on Base (announced as goal, not confirmed release date).","source":""},{"date":"2024-04-01","event":"Sherlock audit contest covers Aerodrome Asset Modules for Arcadia V2 (Q2 2024).","source":""},{"date":"2025-03-12","event":"Arcadia Finance announces public token sale for $AAA on Fjord launchpad.","source":""},{"date":"2025-04-10","event":"AAA Token Generation Event (TGE) completed. AAA reaches all-time high of $1.71 on day of TGE.","source":""},{"date":"2025-06-01","event":"Arcadia Finance joins the Circle Alliance.","source":""},{"date":"2025-07-14","event":"Attacker funds wallet via Tornado Cash on Ethereum at 10:58 PM UTC; bridges funds to Base approximately 30 minutes later.","source":""},{"date":"2025-07-15","event":"Arcadia V2 Rebalancer contract exploited on Base at 4:03 AM UTC via arbitrary swapData calldata injection. Approximately $3.6M (USDC, USDS, Aerodrome, Slipstream LP NFTs) drained across multiple transactions. CertiK and Cyvers raise initial on-chain alarms.","source":""},{"date":"2025-07-15","event":"Arcadia Finance pauses all contracts, advises users to revoke approvals and disable automations. Offers attacker 10% bounty (~$360K) for 90% fund return within 24 hours. Attacker does not respond.","source":""},{"date":"2025-07-15","event":"AAA token drops approximately 46% in trading following the hack disclosure.","source":""},{"date":"2025-07-15","event":"Stolen funds (approximately 1,203 ETH) bridged from Base to Ethereum via Across Protocol and Relay.","source":""}]},"v":1}

   Verify offline (run on your own machine)

   python -m src.verify_decision b2e9e7bf-7f81-4984-b1b0-c8fa870c28e1copy