Hold the bonus, not the debt.
Repayment and closing still happen at liquidation. Only the bonus waits out the window.
How it works
Hold the bonus.
Prove the price.
Liquidating a loan pays the liquidator a bonus, on whatever price the feed published. Lantern holds that bonus back for five minutes, so anyone can prove from on-chain records that the price contradicted the feed's own history or its declared second source, and be paid out of the feed's own bond for proving it.
Let anyone prove a bad price.
A challenger names a rule and supplies evidence. The contract recomputes the verdict from state it already holds.
How it works
Make the bond answer for the position.
The bond must cover the exposure 1:1, so recovery isn't capped by the profit that happens to be held.
How it works
Escalate feeds that get caught.
Each upheld challenge raises the feed's required bond 20%, up to 3×. No admin, no committee.
How it works
Price only on history.
A feed may print freely, but a liquidation can only be priced on a print with four behind it.
How it works
Feeds + Liquidations
Settle on prices that survive a second look.
Prove the price on chain.
Five rules, each a predicate over state the contract already holds.
See the five rules- Slot uniqueness
- Round ordering
- Hold window
- Self history
- Payload provenance
- Cross source
- Feed errors
- Event log
- Replayable verdicts
- Bonus redirect
- Pricing floor
- Peer declaration
- Band from history
- Stale rounds
- Decimals-aware floors
- No admin key
Prove the bond on chain.
Signers post collateral behind every print they publish.
See the bond math- Bond ≥ exposure
- 1% of notional
- +20% per catch
- Hold window
- 3× ceiling
- Bounty share
- Prover stake
- Stake forfeits
- Grace period
- Peer declaration
- Top-up restores
- Fee tokens refused
- Constructor-set window
- No owner
- One-shot peer
- Pricing floor
See how Lantern settles.
Built to be checked
not trusted.
Read the contracts.
Every rule, bond and verdict is in the source, with 664 tests behind it.
Watch it live.
The dashboard reads every bond, hold and verdict straight from Arbitrum Sepolia.
