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Overview

  • Type: Singleton (one per network)
  • Purpose: Store evidence for refund disputes on-chain
  • Address: 0x4089A5A853e9eF35f504B842795fB272dF69c739 (all chains)

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Features

  • IPFS CID storage - Stores content hashes on-chain for evidence trails
  • EIP-712 signature approval - Arbiter approves refunds with off-chain signatures (gas-free for arbiters)
  • Evidence indexing - The contract indexes evidence by payment and submitting party
  • Multi-party submission - Both payer and receiver can submit evidence

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How it works

When a payer or receiver disputes a refund, each side submits evidence (documents, screenshots, logs) to IPFS and records the CID on-chain. The arbiter reviews evidence off-chain and produces an EIP-712 approval signature that anyone can relay. This keeps dispute resolution costs low, since the arbiter never has to submit an on-chain transaction.