Ern
Bounty Range
$1,000 - $50,000
external program
Ern
Ern is a non-custodial DeFi protocol on Ethereum that allocates stablecoin deposits into decentralized money markets and programmatically converts the generated yield into Bitcoin (wBTC).
Category: DeFi Yield Aggregator
Maximum Bounty: $50,000
Live Since: 03 March 2026
Last Updated: 09 March 2026
Ern provides rewards in USDC on Ethereum, denominated in USD.
Smart Contract
| Severity | Max | Min |
|---|---|---|
| Critical | $50,000 | $11,000 |
| High | $10,000 | $3,000 |
| Medium | $2,000 | $2,000 |
| Low | $1,000 | $1,000 |
For critical smart contract bugs, the reward amount is 10% of the funds directly affected up to a maximum of USD 50,000. The calculation of the amount of funds at risk is based on the time and date the bug report is submitted. However, a minimum reward of USD 11,000 is to be rewarded in order to incentivize security researchers against withholding a critical bug report.
High impacts concerning theft/permanent freezing of unclaimed yield/royalties are rewarded within a range of USD 3,000 to USD 10,000 with the reward calculated based on 100% of the funds at risk, though capped at the maximum high reward.
In the event of temporary freezing, the reward doubles from the full frozen value for every additional 24h that the funds are temporarily frozen, up until a max cap of the high reward.
Payouts are handled by the Ern team directly and are denominated in USD. However, payments are done in USDC on Ethereum.
The calculation of the net amount rewarded is based on the average price between CoinMarketCap.com and CoinGecko.com at the time the bug report was submitted. No adjustments are made based on liquidity availability.
Ern is a non-custodial DeFi protocol designed to turn stablecoin yield into long-term Bitcoin accumulation.
It helps users transform income generated in fiat-denominated assets into Bitcoin automatically, providing a simple way to hedge against long-term monetary debasement while maintaining stable capital exposure.
The result is a new model of saving: stable capital working continuously to accumulate hard money over time.
For more information about Ern, please visit https://ern.app/
| Auditor | Link | Completed at |
|---|---|---|
| All audits | https://github.com/ernorg/audits/ | 17 February 2026 |
The submission of KYC information is a requirement for payout processing.
Participants must adhere to the Eligibility Criteria.
Proof of concept is always required for all severities.
Category 2: Notice Required
The project may be receiving reports that are valid (the bug and attack vector are real) and cite assets and impacts that are in scope, but there may be obstacles or barriers to executing the attack in the real world. In other words, there is a question about how feasible the attack really is. Conversely, there may also be mitigation measures that projects can take to prevent the impact of the bug, which are not feasible or would require unconventional action and hence, should not be used as reasons for downgrading a bug's severity.
Therefore, Immunefi has developed a set of feasibility limitation standards which by default states what security researchers, as well as projects, can or cannot cite when reviewing a bug report.