{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "title": "WalletRef",
  "description": "Hashed wallet reference with provider metadata",
  "type": "object",
  "required": ["refId"],
  "properties": {
    "refId": {
      "type": "string",
      "description": "Hashed wallet reference identifier",
      "pattern": "^0x[a-fA-F0-9]{64}$"
    },
    "provider": {
      "type": "string",
      "description": "Wallet provider identifier",
      "enum": ["WALLETCONNECT", "FIREBLOCKS", "METAMASK", "OTHER"]
    },
    "address": {
      "type": "string",
      "description": "Wallet address on ChainID 138",
      "pattern": "^0x[a-fA-F0-9]{40}$"
    },
    "metadata": {
      "type": "object",
      "description": "Provider-specific metadata (opaque JSON)",
      "additionalProperties": true
    },
    "createdAt": {
      "type": "string",
      "format": "date-time",
      "description": "Wallet reference creation timestamp"
    }
  }
}