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{"actor":"system:backfill","investigation_id":"18de0ab9-acb0-46d9-9976-6522daa88e11","kind":"publish","page_slug":"fei-protocol","published_at":"2026-05-30T12:57:56.882Z","sequence_num":1,"snapshot":{"content_type":"investigation","entity_name":"Fei Protocol","sections":[{"content":"","heading":"Genesis Event and Launch Failure (April 2021)","severity":"high","sources":[{"credibility":2,"name":"Fei Labs Raised Almost $1.3 Billion for Decentralized Stablecoin — Decrypt","type":"news_article","url":"https://decrypt.co/63924/investment-round-fei-labs-raise-almost-1-3-billion"},{"credibility":2,"name":"Fei Protocol genesis locks up $1 billion in ETH, but LPs could face losses — CoinTelegraph","type":"news_article","url":"https://cointelegraph.com/news/fei-protocol-genesis-locks-up-1-billion-in-eth-but-lps-could-face-losses"},{"credibility":2,"name":"Fei Labs raises 639K ETH in genesis event — CoinTelegraph","type":"news_article","url":"https://cointelegraph.com/news/fei-labs-raises-639k-eth-in-genesis-event"},{"credibility":2,"name":"Coinbase, Naval, Framework Ventures Back $19M Raise — CoinDesk","type":"news_article","url":"https://www.coindesk.com/business/2021/03/08/coinbase-naval-framework-ventures-back-19m-raise-for-a-capital-efficient-stablecoin"},{"credibility":2,"name":"Explained: The Fei Protocol Bug (April 2021) — Halborn","type":"research","url":"https://www.halborn.com/blog/post/explained-the-fei-protocol-bug"},{"credibility":2,"name":"Fei — REKT News","type":"news_article","url":"https://rekt.news/fei-rekt"}]},{"content":"","heading":"Protocol Controlled Value Model and V2 Redesign","severity":"medium","sources":[{"credibility":2,"name":"Cointelegraph Consulting: The post-genesis state of the Fei Protocol","type":"news_article","url":"https://cointelegraph.com/news/cointelegraph-consulting-the-post-genesis-state-of-the-fei-protocol"},{"credibility":2,"name":"State of Fei Protocol Q1 2022 — Messari","type":"research","url":"https://messari.io/report/state-of-fei-q1-2022"},{"credibility":2,"name":"Tribe DAO Docs — Protocol Controlled Value","type":"official","url":"https://docs.fei.money/protocol/protocol-controlled-value"}]},{"content":"","heading":"Merger with Rari Capital and Formation of Tribe DAO (December 2021)","severity":"medium","sources":[{"credibility":1,"name":"Rari Capital, Fei Protocol Token Holders Approve Multibillion-Dollar DeFi Merger — CoinDesk","type":"news_article","url":"https://www.coindesk.com/tech/2021/12/21/rari-capital-fei-protocol-token-holders-approve-multibillion-dollar-defi-merger"},{"credibility":2,"name":"Fei Protocol Merges With Rari Capital To Create $2B Liquidity Player — The Defiant","type":"news_article","url":"https://thedefiant.io/news/defi/rari-capital-fei-merger"},{"credibility":2,"name":"A Match Made in DeFi: Rari Capital and Fei Protocol Merge to 'FeiRari' — Blockworks","type":"news_article","url":"https://blockworks.co/news/a-match-made-in-defi-rari-capital-and-fei-protocol-merge-to-feirari"},{"credibility":2,"name":"Explained: The Rari Capital Hack (May 2021) — Halborn","type":"research","url":"https://www.halborn.com/blog/post/explained-the-rari-capital-hack-may-2021"}]},{"content":"","heading":"$80 Million Rari Fuse Exploit (April 2022)","severity":"critical","sources":[{"credibility":1,"name":"DeFi Lender Rari Capital/Fei Loses $80M in Hack — CoinDesk","type":"news_article","url":"https://www.coindesk.com/business/2022/04/30/defi-lender-rari-capitalfei-loses-80m-in-hack"},{"credibility":1,"name":"Hacker steals $80 million from Rari Capital's Fuse lending pools — The Block","type":"news_article","url":"https://www.theblock.co/linked/144511/hackers-steal-80-million-from-rari-capitals-lending-pools"},{"credibility":2,"name":"Fei Protocol and Rari Capital Pools Hit By $80 Million Hack — BeInCrypto","type":"news_article","url":"https://beincrypto.com/fei-protocol-and-rari-capital-lose-80-million-dollars-in-pool-hack/"},{"credibility":2,"name":"Revisiting FEI Protocol Incident — CertiK","type":"research","url":"https://www.certik.com/resources/blog/6LiXVtPQ8q5AQfqOUPnTOS-revisiting-fei-protocol-incident"},{"credibility":2,"name":"Rari Capital Re-entrancy Attack — April 2022 — Detailed Analysis — ImmuneByes","type":"research","url":"https://immunebytes.com/blog/rari-capital-re-entrancy-attack-april-2022-detailed-analysis/"},{"credibility":2,"name":"Fei Protocol Offers $10M Bounty After $80M Rari Capital Exploit — Decrypt","type":"news_article","url":"https://decrypt.co/99103/fei-protocol-offers-10m-bounty-after-80m-rari-capital-exploit"}]},{"content":"","heading":"Tribe DAO Governance Crisis and Wind-Down (2022)","severity":"high","sources":[{"credibility":2,"name":"Tribe DAO votes in favor of repaying victims of $80M Rari hack — CoinTelegraph","type":"news_article","url":"https://cointelegraph.com/news/tribe-dao-votes-in-favor-of-repaying-victims-of-80m-rari-hack"},{"credibility":2,"name":"Tribe kills DAO, overrules vote to pay crypto debt — Protos","type":"news_article","url":"https://protos.com/tribe-kills-dao-overrules-vote-to-pay-crypto-debt/"},{"credibility":2,"name":"Tribe DAO Votes to Repay Rari Capital Hack Victims — Again — Decrypt","type":"news_article","url":"https://decrypt.co/110102/tribe-dao-votes-repay-rari-capital-hack-victims-again"},{"credibility":1,"name":"Tribe DAO proposes a $157 million redemption for token holders, Rari hack victims — The Block","type":"news_article","url":"https://www.theblock.co/post/164611/tribe-dao-proposes-a-157-million-redemption-for-token-holders-rari-hack-victims"},{"credibility":2,"name":"The Fei-Fuse Nightmare: A Wake-up Call for Improved DAO Governance — CoinMarketCap Academy","type":"news_article","url":"https://coinmarketcap.com/academy/article/the-fei-fuse-nightmare-a-wake-up-call-for-improved-dao-governance"},{"credibility":2,"name":"The Disingenuous TRIBE DAO Liquidation Exemplifies a Governance Farce — ar.ca","type":"other","url":"https://www.ar.ca/blog/the-disingenuous-tribe-dao-liquidation-exemplifies-a-governance-farce"}]},{"content":"","heading":"Securities Class Action (2021–2023)","severity":"high","sources":[{"credibility":1,"name":"FEI/TRIBE Genesis Securities Settlement press release — PR Newswire","type":"regulatory","url":"https://www.prnewswire.com/news-releases/if-you-purchased-fei-or-tribe-tokens-in-the-genesis-event-between-march-31-2021-and-april-3-2021-a-class-action-settlement-may-affect-your-rights-301871446.html"},{"credibility":1,"name":"HGT Law Obtains Final Approval of Settlement in FEI/TRIBE Tokens Securities Class Action","type":"court_filing","url":"https://www.hgtlaw.com/news/hgt-law-defeats-demurrer-in-fei/tribe-securities-class-action-m9gye-72grc"},{"credibility":2,"name":"Fei Protocol's Discord Seized By San Francisco Court Amid Class Action Suit — The Defiant","type":"news_article","url":"https://thedefiant.io/fei-protocol-discord-seized-by-san-francisco-court-amid-securities-suit"},{"credibility":1,"name":"Official settlement website — FEI/TRIBE Securities Settlement","type":"court_filing","url":"https://www.feitribesecuritiessettlement.com/"}]},{"content":"","heading":"SEC Enforcement Action Against Rari Capital (2024)","severity":"critical","sources":[{"credibility":1,"name":"SEC Charges DeFi Platform Rari Capital and its Founders With Misleading Investors and Acting as Unregistered Brokers — SEC.gov","type":"regulatory","url":"https://www.sec.gov/newsroom/press-releases/2024-138"},{"credibility":2,"name":"SEC charges Rari Capital and co-founders over unregistered securities — Crypto Briefing","type":"news_article","url":"https://cryptobriefing.com/sec-rari-capital-settlement/"},{"credibility":2,"name":"Rari Capital Settles With SEC Over Unregistered Offerings — The Defiant","type":"news_article","url":"https://thedefiant.io/news/regulation/rari-capital-settles-with-sec-over-unregistered-offerings"},{"credibility":2,"name":"DeFi startup Rari Capital settles with the SEC — Blockworks","type":"news_article","url":"https://blockworks.com/news/sec-settlement-rari-capital-unregistered-broker"}]}],"sources_used":[{"credibility":2,"name":"Fei Labs Raised Almost $1.3 Billion for Decentralized Stablecoin — Decrypt","type":"news_article","url":"https://decrypt.co/63924/investment-round-fei-labs-raise-almost-1-3-billion"},{"credibility":2,"name":"Fei Protocol genesis locks up $1 billion in ETH, but LPs could face losses — CoinTelegraph","type":"news_article","url":"https://cointelegraph.com/news/fei-protocol-genesis-locks-up-1-billion-in-eth-but-lps-could-face-losses"},{"credibility":2,"name":"Fei Labs raises 639K ETH in genesis event — CoinTelegraph","type":"news_article","url":"https://cointelegraph.com/news/fei-labs-raises-639k-eth-in-genesis-event"},{"credibility":1,"name":"Coinbase, Naval, Framework Ventures Back $19M Raise — CoinDesk","type":"news_article","url":"https://www.coindesk.com/business/2021/03/08/coinbase-naval-framework-ventures-back-19m-raise-for-a-capital-efficient-stablecoin"},{"credibility":2,"name":"Explained: The Fei Protocol Bug (April 2021) — Halborn","type":"research","url":"https://www.halborn.com/blog/post/explained-the-fei-protocol-bug"},{"credibility":2,"name":"Explained: The Rari Capital Hack (May 2021) — Halborn","type":"research","url":"https://www.halborn.com/blog/post/explained-the-rari-capital-hack-may-2021"},{"credibility":2,"name":"Fei — REKT News","type":"news_article","url":"https://rekt.news/fei-rekt"},{"credibility":1,"name":"Rari Capital, Fei Protocol Token Holders Approve Multibillion-Dollar DeFi Merger — CoinDesk","type":"news_article","url":"https://www.coindesk.com/tech/2021/12/21/rari-capital-fei-protocol-token-holders-approve-multibillion-dollar-defi-merger"},{"credibility":2,"name":"Fei Protocol Merges With Rari Capital To Create $2B Liquidity Player — The Defiant","type":"news_article","url":"https://thedefiant.io/news/defi/rari-capital-fei-merger"},{"credibility":2,"name":"A Match Made in DeFi: Rari Capital and Fei Protocol Merge to 'FeiRari' — Blockworks","type":"news_article","url":"https://blockworks.co/news/a-match-made-in-defi-rari-capital-and-fei-protocol-merge-to-feirari"},{"credibility":1,"name":"DeFi Lender Rari Capital/Fei Loses $80M in Hack — CoinDesk","type":"news_article","url":"https://www.coindesk.com/business/2022/04/30/defi-lender-rari-capitalfei-loses-80m-in-hack"},{"credibility":1,"name":"Hacker steals $80 million from Rari Capital's Fuse lending pools — The Block","type":"news_article","url":"https://www.theblock.co/linked/144511/hackers-steal-80-million-from-rari-capitals-lending-pools"},{"credibility":2,"name":"Revisiting FEI Protocol Incident — CertiK","type":"research","url":"https://www.certik.com/resources/blog/6LiXVtPQ8q5AQfqOUPnTOS-revisiting-fei-protocol-incident"},{"credibility":2,"name":"Fei Protocol Offers $10M Bounty After $80M Rari Capital Exploit — Decrypt","type":"news_article","url":"https://decrypt.co/99103/fei-protocol-offers-10m-bounty-after-80m-rari-capital-exploit"},{"credibility":2,"name":"Tribe DAO votes in favor of repaying victims of $80M Rari hack — CoinTelegraph","type":"news_article","url":"https://cointelegraph.com/news/tribe-dao-votes-in-favor-of-repaying-victims-of-80m-rari-hack"},{"credibility":2,"name":"Tribe kills DAO, overrules vote to pay crypto debt — Protos","type":"news_article","url":"https://protos.com/tribe-kills-dao-overrules-vote-to-pay-crypto-debt/"},{"credibility":2,"name":"Tribe DAO Votes to Repay Rari Capital Hack Victims Again — Decrypt","type":"news_article","url":"https://decrypt.co/110102/tribe-dao-votes-repay-rari-capital-hack-victims-again"},{"credibility":1,"name":"Tribe DAO proposes a $157 million redemption for token holders, Rari hack victims — The Block","type":"news_article","url":"https://www.theblock.co/post/164611/tribe-dao-proposes-a-157-million-redemption-for-token-holders-rari-hack-victims"},{"credibility":2,"name":"The Fei-Fuse Nightmare: A Wake-up Call for Improved DAO Governance — CoinMarketCap Academy","type":"news_article","url":"https://coinmarketcap.com/academy/article/the-fei-fuse-nightmare-a-wake-up-call-for-improved-dao-governance"},{"credibility":1,"name":"FEI/TRIBE Genesis Securities Settlement press release — PR Newswire","type":"regulatory","url":"https://www.prnewswire.com/news-releases/if-you-purchased-fei-or-tribe-tokens-in-the-genesis-event-between-march-31-2021-and-april-3-2021-a-class-action-settlement-may-affect-your-rights-301871446.html"},{"credibility":1,"name":"HGT Law — Final Approval of FEI/TRIBE Settlement","type":"court_filing","url":"https://www.hgtlaw.com/news/hgt-law-defeats-demurrer-in-fei/tribe-securities-class-action-m9gye-72grc"},{"credibility":1,"name":"Official FEI/TRIBE Securities Settlement website","type":"court_filing","url":"https://www.feitribesecuritiessettlement.com/"},{"credibility":2,"name":"Fei Protocol Discord Seized by San Francisco Court — The Defiant","type":"news_article","url":"https://thedefiant.io/fei-protocol-discord-seized-by-san-francisco-court-amid-securities-suit"},{"credibility":1,"name":"SEC Charges Rari Capital and Founders — SEC.gov press release","type":"regulatory","url":"https://www.sec.gov/newsroom/press-releases/2024-138"},{"credibility":2,"name":"SEC charges Rari Capital and co-founders over unregistered securities — Crypto Briefing","type":"news_article","url":"https://cryptobriefing.com/sec-rari-capital-settlement/"},{"credibility":2,"name":"DeFi startup Rari Capital settles with the SEC — Blockworks","type":"news_article","url":"https://blockworks.com/news/sec-settlement-rari-capital-unregistered-broker"},{"credibility":2,"name":"State of Fei Protocol Q1 2022 — Messari","type":"research","url":"https://messari.io/report/state-of-fei-q1-2022"},{"credibility":2,"name":"The Disingenuous TRIBE DAO Liquidation Exemplifies a Governance Farce — ar.ca","type":"other","url":"https://www.ar.ca/blog/the-disingenuous-tribe-dao-liquidation-exemplifies-a-governance-farce"},{"credibility":2,"name":"Fei Protocol TVL Stats — DefiLlama","type":"on_chain","url":"https://defillama.com/protocol/fei-protocol"}],"summary":"Fei Protocol was an algorithmic stablecoin project that launched in April 2021 with the largest DeFi genesis event in history at the time, raising approximately $1.3 billion in ETH, but whose novel 'direct incentive' peg mechanism immediately failed and trapped early participants with severe withdrawal penalties. After merging with Rari Capital to form Tribe DAO in December 2021, the combined protocol suffered an $80 million reentrancy exploit in April 2022 that precipitated a contentious governance crisis and the eventual dissolution of the DAO. Fei Labs and Rari Capital separately faced legal and regulatory consequences, including a class action securities settlement of $17.85 million and SEC charges against Rari Capital and its founders.","timeline":[{"date":"2021-03-08","event":"Fei Labs announces $19 million seed round led by Andreessen Horowitz, with participation from Framework Ventures, Coinbase Ventures, and Naval Ravikant.","source":"CoinDesk","source_url":"https://www.coindesk.com/business/2021/03/08/coinbase-naval-framework-ventures-back-19m-raise-for-a-capital-efficient-stablecoin"},{"date":"2021-03-31","event":"Fei Protocol Token Genesis Event opens. Participants contribute ETH to receive FEI stablecoins and TRIBE governance tokens.","source":"CoinTelegraph","source_url":"https://cointelegraph.com/news/fei-labs-raises-639k-eth-in-genesis-event"},{"date":"2021-04-03","event":"Genesis Event closes having collected approximately 639,000 ETH (~$1.3 billion), the largest DeFi genesis at the time. FEI immediately loses its $1 peg.","source":"Decrypt","source_url":"https://decrypt.co/63924/investment-round-fei-labs-raise-almost-1-3-billion"},{"date":"2021-04-07","event":"FEI peg reaches an all-time low of approximately $0.71. A vulnerability in the direct incentive rebate mechanism is discovered and minting rewards are disabled, trapping users.","source":"Halborn","source_url":"https://www.halborn.com/blog/post/explained-the-fei-protocol-bug"},{"date":"2021-05-08","event":"Rari Capital suffers its first major hack: approximately $10.6–$15 million is drained from its Ethereum pool via a manipulation of Alpha Finance's ibETH token valuation.","source":"Halborn","source_url":"https://www.halborn.com/blog/post/explained-the-rari-capital-hack-may-2021"},{"date":"2021-10-01","event":"Fei Protocol launches V2, removing the flawed direct incentive mechanism and enabling FEI redemption at $1.00 against PCV reserves.","source":"Crypto Briefing","source_url":"https://cryptobriefing.com/fei-has-achieved-price-stability-after-initial-failure/"},{"date":"2021-11-16","event":"Fei co-founder Joey Santoro and Rari co-founder Jai Bhavnani jointly propose a merger of Fei Protocol and Rari Capital into Tribe DAO.","source":"Blockworks","source_url":"https://blockworks.co/news/a-match-made-in-defi-rari-capital-and-fei-protocol-merge-to-feirari"},{"date":"2021-12-21","event":"Tribe DAO merger formally approved: 90% of TRIBE holders and 93% of RGT holders vote in favor. Combined assets estimated at over $2 billion.","source":"CoinDesk","source_url":"https://www.coindesk.com/tech/2021/12/21/rari-capital-fei-protocol-token-holders-approve-multibillion-dollar-defi-merger"},{"date":"2022-04-30","event":"Rari Capital Fuse pools exploited via reentrancy attack; approximately $79.3 million (~$80 million) drained. Fei Protocol pauses all Fuse borrowing and offers attacker a $10 million bounty.","source":"CoinDesk","source_url":"https://www.coindesk.com/business/2022/04/30/defi-lender-rari-capitalfei-loses-80m-in-hack"},{"date":"2022-05-01","event":"Non-binding Snapshot vote passes with ~75% approval to use Tribe DAO PCV to fully repay Fuse hack victims. Stolen funds begin flowing through Tornado Cash.","source":"CoinTelegraph","source_url":"https://cointelegraph.com/news/tribe-dao-votes-in-favor-of-repaying-victims-of-80m-rari-hack"},{"date":"2022-08-19","event":"Fei Labs submits formal proposal to wind down Tribe DAO, citing macro conditions and the Fuse hack.","source":"Protos","source_url":"https://protos.com/tribe-kills-dao-overrules-vote-to-pay-crypto-debt/"},{"date":"2022-09-19","event":"Tribe DAO on-chain vote records 99% approval for full reimbursement of Fuse hack victims. Execution occurs September 20: 26.61 million DAI and 12.68 million FEI distributed.","source":"Decrypt","source_url":"https://decrypt.co/110102/tribe-dao-votes-repay-rari-capital-hack-victims-again"},{"date":"2023-10-27","event":"Superior Court of California, San Francisco County, grants final approval of $17.85 million class action settlement over alleged sale of unregistered FEI and TRIBE securities during the Genesis Event.","source":"PR Newswire","source_url":"https://www.prnewswire.com/news-releases/if-you-purchased-fei-or-tribe-tokens-in-the-genesis-event-between-march-31-2021-and-april-3-2021-a-class-action-settlement-may-affect-your-rights-301871446.html"},{"date":"2024-09-18","event":"SEC announces settled charges against Rari Capital, co-founders Jai Bhavnani, Jack Lipstone, and David Lucid, and successor entity Rari Capital Infrastructure LLC for misleading investors and operating as unregistered brokers. Co-founders receive five-year officer-and-director bars.","source":"SEC.gov","source_url":"https://www.sec.gov/newsroom/press-releases/2024-138"}]},"v":1}