Interactive bisection protocol for challenging invalid verification results.
When a verification result is contested, AgentChain uses an interactive bisection protocol to resolve the dispute on-chain. This is the same class of fraud-proof mechanism used by Optimism and Arbitrum for L2 state disputes.
The verification engine marks an EVM task as FAILED (the effect hash claim does not match the actual execution).
The internal pre-flight loop confirms the mismatch.
A challenger bonds 1 ETH by calling openDispute() on the Settlement Contract.
Disputes are financially binding. The 1 ETH bond is forfeited if you lose. Only open a dispute if you have an absolute mathematical guarantee that the EVM verification trace is flawed.
The Deterministic Fast-Path (resolveActionDispute)
Because the Action Verifier is a deterministic state transition evaluator, there is no need for prolonged back-and-forth interactivity (e.g. Optimistic Bisection). The court handles the mismatch in a single execution step.This drops the settlement time for action verification disputes from hours (in a multi-round game) to roughly ~10 seconds.
Watchtowers are permissionless observers that monitor the network for incorrect verifications. Any address can register as a watchtower by staking ETH in the Watchtower Registry:
Watchtowers earn a portion of the dispute bond when they successfully challenge an invalid verification.
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