Audit log

Every state-changing event for BurgerSwap: moderation decisions on community submissions, plus corrections and updates from the news pipeline. URL-based decisions are designed to carry three independent witnesses — the original source, an Internet Archive snapshot, and a Solana memo signed by our publicly-disclosed publisher key. Archive coverage is still being backfilled, so each decision below reports its own snapshot status rather than assuming one exists.

1. #1publishby system:backfill

   2026-05-28 18:57:55Z
   Score: ? → ? (no score change)
   anchoranchored

   chain

   ●mainnet-betaslot 422,779,231

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   2jAajSVyb68d…yUS4N8hYcopyexplorer ↗

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   Eegks9dhD4Km…MjnQqc1Ecopysha256 → base58

   verifying row…full verify ↗

   canonical bytes (6759 B) ▸

   {"actor":"system:backfill","investigation_id":"eba94768-6699-40f8-921e-af5980db77fa","kind":"publish","page_slug":"burgerswap","published_at":"2026-05-28T18:57:55.136Z","sequence_num":1,"snapshot":{"content_type":"investigation","entity_name":"BurgerSwap","sections":[{"content":"","heading":"","severity":"medium","sources":[{"credibility":3,"name":"https://cryptopotato.com/who-is-behind-burgerswap-already-400-million-bnb-staked-in-1-day-via-binance-smart-chain/","type":"other","url":""},{"credibility":3,"name":"https://cointelegraph.com/news/burgerswap-frying-high-binance-offers-up-the-latest-dish-on-defi-menu","type":"other","url":""},{"credibility":3,"name":"https://academy.binance.com/en/articles/what-is-burgercities-burger","type":"other","url":""}]},{"content":"","heading":"","severity":"medium","sources":[{"credibility":3,"name":"https://halborn.com/explained-the-burgerswap-hack-may-2021/","type":"other","url":""},{"credibility":3,"name":"https://www.coindesk.com/markets/2021/05/28/burgerswap-hit-by-flash-loan-attack-netting-over-7m","type":"other","url":""},{"credibility":3,"name":"https://cryptopotato.com/another-bsc-project-exploit-7-2m-drained-from-burgerswap-in-a-flash-loan-attack/","type":"other","url":""},{"credibility":3,"name":"https://slowmist.medium.com/an-analysis-of-the-attack-on-burgerswap-e48968040bad","type":"other","url":""},{"credibility":3,"name":"https://cryptoslate.com/binance-smart-chain-defi-project-burgerswap-hacked-for-7-million/","type":"other","url":""}]},{"content":"","heading":"","severity":"medium","sources":[{"credibility":3,"name":"https://cryptobriefing.com/7-million-lost-flash-loan-attack-bsc-burgerswap/","type":"other","url":""},{"credibility":3,"name":"https://slowmist.medium.com/an-analysis-of-the-attack-on-burgerswap-e48968040bad","type":"other","url":""},{"credibility":3,"name":"https://blockcast.cc/news/peckshield-brief-analysis-of-burgerswap-lightning-loan-attack-the-logic-behind-the-defi-protocol-is-more-important-than-the-code/","type":"other","url":""},{"credibility":3,"name":"https://halborn.com/explained-the-burgerswap-hack-may-2021/","type":"other","url":""}]},{"content":"","heading":"","severity":"medium","sources":[{"credibility":3,"name":"https://slowmist.medium.com/an-analysis-of-the-attack-on-burgerswap-e48968040bad","type":"other","url":""},{"credibility":3,"name":"https://bscscan.com/address/0x3f820d0bd7ce1cc0a993325cd46cae870a8d8bdc","type":"other","url":""},{"credibility":3,"name":"https://cryptopotato.com/another-bsc-project-exploit-7-2m-drained-from-burgerswap-in-a-flash-loan-attack/","type":"other","url":""}]},{"content":"","heading":"","severity":"medium","sources":[{"credibility":3,"name":"https://cryptopotato.com/who-is-behind-burgerswap-already-400-million-bnb-staked-in-1-day-via-binance-smart-chain/","type":"other","url":""},{"credibility":3,"name":"https://cryptobriefing.com/7-million-lost-flash-loan-attack-bsc-burgerswap/","type":"other","url":""},{"credibility":3,"name":"https://research.binance.com/en/projects/burger-swap","type":"other","url":""}]},{"content":"","heading":"","severity":"medium","sources":[{"credibility":3,"name":"https://medium.com/burgerswapblog/go-forward-plan-cburger-d522219affae","type":"other","url":""},{"credibility":3,"name":"https://u.today/binance-smart-chains-burgerswap-suffers-72-million-exploit","type":"other","url":""}]},{"content":"","heading":"","severity":"medium","sources":[{"credibility":3,"name":"https://medium.com/burgerswapblog/go-forward-plan-cburger-d522219affae","type":"other","url":""},{"credibility":3,"name":"https://academy.binance.com/en/articles/what-is-burgercities-burger","type":"other","url":""},{"credibility":3,"name":"https://coinmarketcap.com/currencies/burger-cities/","type":"other","url":""},{"credibility":3,"name":"https://www.fxcm.com/markets/insights/everything-you-need-to-know-about-burgercities/","type":"other","url":""}]},{"content":"","heading":"","severity":"medium","sources":[{"credibility":3,"name":"https://cryptobriefing.com/7-million-lost-flash-loan-attack-bsc-burgerswap/","type":"other","url":""},{"credibility":3,"name":"https://halborn.com/explained-the-burgerswap-hack-may-2021/","type":"other","url":""},{"credibility":3,"name":"https://slowmist.medium.com/an-analysis-of-the-attack-on-burgerswap-e48968040bad","type":"other","url":""},{"credibility":3,"name":"https://www.coindesk.com/markets/2021/05/28/burgerswap-hit-by-flash-loan-attack-netting-over-7m","type":"other","url":""}]}],"sources_used":[],"summary":"BurgerSwap is a decentralized exchange (DEX) and automated market maker (AMM) protocol launched in September 2020 on Binance Smart Chain (BSC), built around the native BURGER governance token. On May 28, 2021, the protocol suffered a flash loan and reentrancy exploit that drained approximately $7.2 million in user funds across 14 transactions. Uniswap founder Hayden Adams publicly noted that a critical line of code enforcing the constant-product formula had been deliberately removed from BurgerSwap's fork of Uniswap v2, raising allegations of an intentional vulnerability or insider involvement by the anonymous development team.","timeline":[{"date":"2020-09-01","event":"BurgerSwap launches on Binance Smart Chain with the BURGER governance token.","source":""},{"date":"2020-09-01","event":"Beosin audits the first version of BurgerSwap smart contracts. Team relies primarily on internal audits and offers 1,000 BNB bounty for external review.","source":""},{"date":"2021-05-28","event":"Flash loan and reentrancy exploit drains approximately $7.2 million from BurgerSwap across 14 transactions on BSC. BURGER token price drops ~27%.","source":""},{"date":"2021-05-28","event":"Uniswap founder Hayden Adams publicly states BurgerSwap removed the only code line enforcing x*y=k from its Uniswap v2 fork, implying the vulnerability may have been intentional.","source":""},{"date":"2021-05-28","event":"BurgerSwap suspends protocol services and issues statement promising to cover user losses.","source":""},{"date":"2021-05-29","event":"SlowMist and PeckShield publish technical post-mortems confirming reentrancy vulnerability and missing constant-product formula enforcement.","source":""},{"date":"2021-06-01","event":"BurgerSwap publishes Go Forward Plan detailing cBURGER compensation token airdrop over 90-day linear distribution for affected liquidity providers.","source":""},{"date":"2022-01-01","event":"BurgerCities metaverse platform launches in alpha, marking effective rebranding from BurgerSwap.","source":""},{"date":"2022-08-01","event":"Maximum BURGER token supply tripled from 21 million to 63 million via governance decision, described as controversial by community members.","source":""}]},"v":1}

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2. #2rescoreby systemsystem

   2026-10-10 18:43:15Z
   Score: 22 → 41 (+19)
   Rescored under Scoring v2, the published formula (avoid.net/scoring): 22 → 41. Problems weighed by who is responsible: concerns that are not fraud −9.6, the subject's own conduct −8, incidents the subject suffered −6.4, problems around the subject, caused by others −1.6; legitimacy credit long-running +2.
   anchoranchored

   chain

   ●mainnet-betaslot 455,363,322

   sig

   4A4ARVVErhLN…Pauk6jkhcopyexplorer ↗

   hash

   Eye2acD1pJE7…vF7teEPfcopysha256 → base58

   verifying row…full verify ↗

   canonical bytes (671 B) ▸

   {"actor":"system","decided_at":"2026-10-10T18:43:15.073Z","decision":"rescore","investigation_id":"eba94768-6699-40f8-921e-af5980db77fa","new_score":41,"page_slug":"burgerswap","prev_score":22,"reason":"Rescored under Scoring v2, the published formula (avoid.net/scoring): 22 → 41. Problems weighed by who is responsible: concerns that are not fraud −9.6, the subject's own conduct −8, incidents the subject suffered −6.4, problems around the subject, caused by others −1.6; legitimacy credit long-running +2.","score_delta":19,"score_model":"v2","sequence_num":2,"submission_content_hash":null,"submission_id":null,"submission_kind":null,"submission_valence":null,"v":1}

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3. #3reviewby reviewerreviewer

   2026-11-03 23:39:58Z
   Score: 41 → 41 (no score change)
   The core narrative holds: a May 2021 flash loan and reentrancy exploit of about $7.2M across 14 transactions, Hayden Adams's comment on the removed x*y=k line, and the team's promise to cover losses are corroborated by The Block and search coverage. The price-drop figure differs between outlets (18% vs 27%), the May 27 vs May 28 dating in the compensation section is unexplained, and the ZachXBT statement is unsourced and unverified. Only a few claims were checked in depth because SlowMist and other sources were not readable and time was limited. Current status after 2022 is not established.
   anchoranchored

   chain

   ●mainnet-betaslot 465,086,861

   sig

   3KomyWodeYcV…YFWxEeFAcopyexplorer ↗

   hash

   9NrC6sAoFV5A…qmRaSzujcopysha256 → base58

   verifying row…full verify ↗

   canonical bytes (1444 B) ▸

   {"actor":"reviewer","artifact_identity":"853a34068bf2a1c431a0121621d52fd9","decided_at":"2026-11-03T23:39:58.915Z","decision":"review","disputed_pct":0.5,"findings_hash":"98SUcAdbPw95RmXAuFiNqz34TNA2TKKWygz83rLZrMVP","investigation_id":"eba94768-6699-40f8-921e-af5980db77fa","judge_def_hash":"750934ecb48272224909b7430fab271676d391380fbc821acbe7ee7e4cac2fa3","new_score":41,"omissions":{"material":0,"total":1},"page_content_hash":"483aa82579bfb9583544413dd7366fa322ef265f78d133f66c9257805f713ac7","page_slug":"burgerswap","prev_score":41,"reason":"The core narrative holds: a May 2021 flash loan and reentrancy exploit of about $7.2M across 14 transactions, Hayden Adams's comment on the removed x*y=k line, and the team's promise to cover losses are corroborated by The Block and search coverage. The price-drop figure differs between outlets (18% vs 27%), the May 27 vs May 28 dating in the compensation section is unexplained, and the ZachXBT statement is unsourced and unverified. Only a few claims were checked in depth because SlowMist and other sources were not readable and time was limited. Current status after 2022 is not established.","reviewer_def_hash":"3839668b232611e5b26db72079d64745f8e57e919b8a379e79b44ba4a52c845b","score_delta":0,"sequence_num":3,"subject_status":"rebranded","subject_status_contradicts_page":false,"submission_content_hash":null,"submission_id":null,"submission_kind":null,"submission_valence":null,"v":1}

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4. #4review reviseby judgejudge

   2026-11-03 23:39:59Z
   Score: 41 → 41 (no score change)
   The core account of the May 2021 flash loan and reentrancy exploit (about $7.2M, 14 transactions) was confirmed by independent reporting (claim_findings[0]). However, 3 of 6 checked claims could not be verified (50%, none blocked by the source): an uncited ZachXBT statement (claim_findings[4]), an unexplained May 27 versus May 28 date and unfound block height (claim_findings[3]), and current exchange listings (claim_findings[5]). Two further claims were only partly supported (price drop of 18% versus 27%, and the exact wording of the Hayden Adams quote). The penalty sits at the mild end of the band because the unverified items are peripheral, the reviewer's confidence was low (0.5), and the only omission, a 2025 token migration proposal, is minor.
   anchoranchored

   chain

   ●mainnet-betaslot 465,086,866

   sig

   2bavQbYSWhH6…Jxgm44pVcopyexplorer ↗

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   5sfu6tRZfqrq…frdx1YSncopysha256 → base58

   verifying row…full verify ↗

   canonical bytes (1398 B) ▸

   {"actor":"judge","artifact_identity":"853a34068bf2a1c431a0121621d52fd9","band_override":null,"decided_at":"2026-11-03T23:39:58.915Z","decision":"review_revise","delist_requested":false,"disputed_pct":0.5,"investigation_id":"eba94768-6699-40f8-921e-af5980db77fa","judge_def_hash":"750934ecb48272224909b7430fab271676d391380fbc821acbe7ee7e4cac2fa3","new_score":41,"page_slug":"burgerswap","prev_score":41,"reason":"The core account of the May 2021 flash loan and reentrancy exploit (about $7.2M, 14 transactions) was confirmed by independent reporting (claim_findings[0]). However, 3 of 6 checked claims could not be verified (50%, none blocked by the source): an uncited ZachXBT statement (claim_findings[4]), an unexplained May 27 versus May 28 date and unfound block height (claim_findings[3]), and current exchange listings (claim_findings[5]). Two further claims were only partly supported (price drop of 18% versus 27%, and the exact wording of the Hayden Adams quote). The penalty sits at the mild end of the band because the unverified items are peripheral, the reviewer's confidence was low (0.5), and the only omission, a 2025 token migration proposal, is minor.","reviewer_def_hash":"3839668b232611e5b26db72079d64745f8e57e919b8a379e79b44ba4a52c845b","score_delta":0,"sequence_num":4,"submission_content_hash":null,"submission_id":null,"submission_kind":null,"submission_valence":null,"v":1}

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5. #5rescoreby systemsystem

   2026-11-03 23:40:00Z
   Score: 41 → 49 (+8)
   Recalculated after the fact-check of 2026-11-03. Rescored under Scoring v2, the published formula (avoid.net/scoring): 41 → 49. Problems weighed by who is responsible: the subject's own conduct −8, incidents the subject suffered −6.4, concerns that are not fraud −3.2, problems around the subject, caused by others −0.8; legitimacy credit long-running +2; 3 section(s) set aside until a failed fact-check is resolved.
   anchoranchored

   chain

   ●mainnet-betaslot 465,086,871

   sig

   4fJqAUNzLb6d…WSXcUXkbcopyexplorer ↗

   hash

   EpsH3iapDUZM…uUBbUk5Xcopysha256 → base58

   verifying row…full verify ↗

   canonical bytes (781 B) ▸

   {"actor":"system","decided_at":"2026-11-03T23:39:58.915Z","decision":"rescore","investigation_id":"eba94768-6699-40f8-921e-af5980db77fa","new_score":49,"page_slug":"burgerswap","prev_score":41,"reason":"Recalculated after the fact-check of 2026-11-03. Rescored under Scoring v2, the published formula (avoid.net/scoring): 41 → 49. Problems weighed by who is responsible: the subject's own conduct −8, incidents the subject suffered −6.4, concerns that are not fraud −3.2, problems around the subject, caused by others −0.8; legitimacy credit long-running +2; 3 section(s) set aside until a failed fact-check is resolved.","score_delta":8,"score_model":"v2","sequence_num":5,"submission_content_hash":null,"submission_id":null,"submission_kind":null,"submission_valence":null,"v":1}

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