What Happened

Fei Protocol (Backtest)

$0|Operational Failure|August 20, 2022

PCV mechanism failure — direct incentive mechanism did not work as designed, protocol pivoted multiple times, merged with Rari Capital (which was exploited for $80M), eventually governance voted to return PCV to FEI holders and shut down

What Hindenrank Would Have Said

As of June 1, 2022

D+
Risk Score
60/100

“Fei Protocol receives a D risk grade, reflecting severe concerns across multiple dimensions. The combination of a novel and once-failed mechanism design, catastrophic merger contagion from the $80M Rari Fuse exploit, governance dysfunction exemplified by the insider veto of community reimbursement votes, and heavy ETH concentration in reserves creates a compounding risk profile. While PCV reserves currently exceed FEI supply, the trajectory is negative and multiple concurrent stress vectors could push the protocol toward insolvency or forced shutdown. Investors should approach with extreme caution.”

Mechanism Novelty12/15
Interaction Severity16/20
Oracle Surface5/10
Documentation Quality4/10
Track Record12/15
Scale Exposure0/10
Regulatory Risk5/10
Protocol Vitality6/10

Grade Predicted This Failure

Flagged by dimensions: Mechanism Novelty, Interaction Severity, Track Record, Scale Exposure, Protocol Vitality

One or more collapse scenarios directly matched the actual failure mode.

Top Risks Identified

  1. 1.Protocol Controlled Value (PCV) is ~67% concentrated in ETH — a severe market downturn directly impairs the reserve backing FEI
  2. 2.Rari Capital Fuse pools just suffered an $80M reentrancy exploit in April 2022 — Tribe DAO inherited this liability through the merger
  3. 3.Governance crisis: the DAO voted to reimburse Fuse hack victims, but insiders vetoed the on-chain proposal, destroying governance credibility
  4. 4.V1 direct incentive mechanism was abandoned after catastrophic failure at launch — the protocol has already pivoted its core stability mechanism once
  5. 5.Reserve ratio dropped below 1.0 in January 2022 during market stress, showing PCV backing is not reliably overcollateralized

Collapse Scenarios

PCV Insolvency via ETH Crash + Fuse Liability

Elevated
Trigger

ETH price drops 50%+ from current levels while Tribe DAO simultaneously faces $80M+ Fuse reimbursement obligation

Cascade
1.
ETH crashes 50%, reducing PCV from ~$500M to ~$300M (PCV is ~67% ETH)→Reserve ratio drops below 100%, FEI is no longer fully backed by PCV
2.
Fuse hack victims demand $80M reimbursement from Tribe DAO treasury→PCV faces simultaneous market losses and liability payout, pushing reserves to ~$220M against ~$300M+ FEI supply
3.
FEI holders rush to redeem through PSM as reserve ratio drops below 100%→Bank run accelerates PCV drain. PSM rate limits either block redemptions (breaking peg) or allow drain (approaching insolvency)
4.
TRIBE backstop activates — TRIBE minted and sold for FEI to restore reserves→TRIBE token diluted, price crashes, governance token becomes worthless, removing any remaining confidence in the protocol
Historical Precedent

Iron Finance TITAN collapse (June 2021) — similar reflexive death spiral where governance token dilution accelerated collapse of the stablecoin peg

Governance Paralysis Leads to Protocol Shutdown

Moderate
Trigger

Governance dispute over Fuse reimbursement escalates, insider veto power blocks DAO decisions, community loses confidence

Cascade
1.
Insider cohort (team + investors) vetos community-approved proposals using concentrated TRIBE holdings→DAO governance is revealed as effectively centralized — snapshot votes are non-binding and can be overruled
2.
Fuse hack victims and broader community lose trust in Tribe DAO governance process→TRIBE holders begin exiting, FEI demand drops as users migrate to more reliable stablecoins (DAI, FRAX, LUSD)
3.
Core team members or key contributors depart due to governance dysfunction→Development stalls, security maintenance degrades, remaining PCV strategies may not be actively managed
4.
Governance proposes to wind down protocol and return PCV to FEI holders→Protocol effectively shuts down. FEI holders may recover most value via PCV distribution but TRIBE holders lose all governance premium.
Historical Precedent

Wonderland (TIME) governance crisis (January 2022) — treasury mismanagement and governance disputes led to protocol wind-down despite substantial treasury

Rari Merger Contagion Drains PCV

Elevated
Trigger

Additional Rari Fuse pool exploits or undiscovered liabilities surface post-merger, compounding the existing $80M loss

Cascade
1.
Additional Rari Fuse pools are exploited or existing exploit liability is adjudicated as requiring full reimbursement→Tribe DAO faces liabilities exceeding initial estimates, potentially $100M+ when including all affected pools and legal costs
2.
PCV is drawn down to cover Rari-related liabilities, reducing reserves below FEI circulating supply→FEI becomes undercollateralized. Market confidence in the peg erodes.
3.
FEI holders redeem through PSM, accelerating PCV drain→Reserve ratio enters a downward spiral. Each redemption further impairs remaining reserves per outstanding FEI.
4.
Protocol governance must choose between honoring Rari debts or protecting remaining FEI holders→Either path causes significant value destruction. The merger that was supposed to create a $2B liquidity player instead becomes a liability sink.
Historical Precedent

Rari Capital first exploit (May 2021) — Rari suffered a $10M exploit before the Fei merger. The April 2022 $80M exploit shows the pattern was not addressed.

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