{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://azzle.protocol/xmtp/arbitrator-proposal/v1",
  "title": "ArbitratorProposal",
  "description": "Off-chain coordination for mutual-consent arbitrator selection (maps to proposeArbitrator Onchain)",
  "type": "object",
  "required": ["type", "disputeId", "taskId", "proposedArbitrator", "proposer"],
  "properties": {
    "type": { "const": "azzle/ArbitratorProposal" },
    "disputeId": { "type": "string", "pattern": "^[0-9]+$" },
    "taskId": { "type": "string", "pattern": "^[0-9]+$" },
    "proposedArbitrator": { "type": "string", "pattern": "^0x[a-fA-F0-9]{40}$" },
    "proposer": { "type": "string", "pattern": "^0x[a-fA-F0-9]{40}$" },
    "tier": { "type": "integer", "minimum": 0, "maximum": 3 },
    "rationale": { "type": "string", "maxLength": 2000 },
    "registeredForTask": { "type": "boolean", "description": "Indexer-verified standby registration" }
  },
  "additionalProperties": false
}