The same contract moved from HAY to lisUSD, but its history divides cleanly at the 2022 aBNBc crisis. An apparently overcollateralized coin could be overminted when its oracle confused a broken derivative with sound BNB, and the team used pauses and buybacks to repair what liquidation could not.
HAY began as BNB Chain debt minted against BNB and liquid-staking derivatives. Borrowers kept exposure to collateral while receiving a transferable coin. Supply therefore had no fixed cap: authorized modules minted against debt and burned on repayment.
On December 2, 2022, compromised Ankr keys enabled about 10 trillion aBNBc. Its pools collapsed, yet Helio valued deposits through a BNB feed. Arbitrageurs bypassed the interface, minted excess HAY and produced 19,046,819 HAY bad debt; the market touched roughly $0.20.
Helio paused protocol functions and bought back about 6.8 million HAY. Its December report said it was working to replace aBNBc collateral with AnkrBNB and committed to covering the bad debt; it did not report that the entire recovery had finished. The response made the control structure visible: choosing the oracle, admitting collateral, pausing functions and administering contracts could all change the outcome beyond automatic liquidation.
After the Synclub merger, Helio became Lista DAO and HAY became lisUSD in December 2023. The BNB contract stayed the same. New collateral and interfaces expanded the system, while its core remained CDPs, oracle prices and liquidation auctions.
A borrower can acquire lisUSD to extinguish debt and recover remaining collateral. An unrelated holder has no identified claim on a particular vault or bank dollar and may need market liquidity. LISTA governs; lisUSD does not confer votes, issuer equity or guaranteed redemption.
BNB and liquid-staked collateral support an overcollateralized debt token on BNB Chain.
Excess collateral tokens enable roughly 19.05 million HAY bad debt and a fall near $0.20.
The team buys back about 6.8 million HAY and commits to covering bad debt.
Stablecoin lending and BNB liquid staking move toward one organization.
HAY is scheduled to become lisUSD with the same contract in December.
Lista adds collateral and LISTA governance while maintaining lisUSD as collateralized debt.
Last evidence review: 2026-09-05
Lista USD is the renamed HAY token of Helio Protocol, now Lista DAO. The BNB Chain asset kept its contract, `0x0782b6d8c4551b9760e74c0545a9bcd90bdc41e5`, when HAY became lisUSD in December 2023. It is an 18-decimal upgradeable proxy, not a fixed-supply token.
Users create lisUSD debt against approved crypto collateral. Repaying debt burns or cancels the corresponding system liability and permits collateral withdrawal. Holding lisUSD outside a position does not identify a specific vault or reserve share and gives no contractual right to demand one U.S. dollar from a bank or corporate issuer.
Helio tried to turn yield-bearing BNB collateral into spendable liquidity without selling it. The peg is maintained indirectly: overcollateralized borrowing creates supply, borrowers buy lisUSD to repay, liquidations sell unsafe collateral, and liquidity pools price the token.
That mechanism depends on correct collateral valuation. On December 2, 2022, an Ankr key compromise allowed about 10 trillion aBNBc to be minted. Helio's oracle still valued aBNBc through BNB rather than its collapsed market price. Arbitrageurs minted excess HAY, leaving 19,046,819 HAY bad debt and pushing the market near $0.20.
A borrower deposits an accepted asset and mints lisUSD within its collateral ratio. Current documentation shows different minimum ratios and fees by collateral, so BNB rules cannot be generalized to every vault. If value falls below the required margin, anyone may start a Dutch auction; proceeds repay debt, liquidators receive collateral and any remainder returns to the borrower.
The HAY/lisUSD contract is a TransparentUpgradeableProxy. Protocol modules receive mint and burn authority; oracle adapters feed collateral prices; administrators can change implementations and risk parameters. The 2022 response also paused functions, bought back about 6.8 million HAY and promised responsibility for the bad debt, demonstrating operational intervention beyond automatic market incentives.
Helio and Synclub announced their merger on July 4, 2023; the Lista DAO rebrand was announced on November 30, ahead of the December HAY-to-lisUSD name change. HAY became lisUSD without a token swap; governance was assigned to LISTA and its lock-based mechanisms, not to lisUSD. A lisUSD holder can transfer, sell, provide liquidity or repay protocol debt, but the reviewed materials do not create direct issuer redemption at $1, ownership of collateral, equity or a claim on Lista's legal entity.
No. The December 2023 rebrand changed the name to lisUSD while retaining the original BNB Chain contract.
No. Users mint through authorized borrowing modules against approved collateral and risk limits. The token contract's privileged minters, rather than arbitrary wallets, create supply.
Through overcollateralized debt, repayment demand, liquidation and market liquidity. Lista documentation explicitly allows price deviation; there is no attested bank-dollar reserve.
Ankr's compromised aBNBc was minted massively and Helio's oracle did not reflect its market collapse, allowing excess HAY borrowing and about 19.05 million HAY bad debt.
No direct legal or bank redemption right was found. Borrowers can use lisUSD to repay debt, while other holders rely on markets and available protocol routes.
No. LISTA is the governance token. lisUSD is the debt asset and does not by itself confer voting, equity or treasury rights.
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