{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "nkip-0002/events.schema.json",
  "title": "NKIP-0002 receipt (9042) and confirmation (9044) events (v1, draft)",
  "$defs": {
    "hex64": {"type": "string", "pattern": "^[0-9a-f]{64}$"},
    "xmr": {"type": "string", "pattern": "^[0-9]+(\\.[0-9]{1,12})?$"},
    "forbiddenTag": {
      "not": {"type": "array", "prefixItems": [{"type": "string", "pattern": "^([Tt][Xx]([_-]?([Ii][Dd]|[Kk][Ee][Yy]|[Hh][Aa][Ss][Hh]))?|[Pp][Rr][Oo][Oo][Ff]|[Pp][Aa][Yy][Mm][Ee][Nn][Tt][_-]?[Ii][Dd])$"}]}
    }
  },
  "oneOf": [
    {
      "title": "Receipt",
      "type": "object",
      "required": ["kind", "pubkey", "created_at", "tags", "content", "id", "sig"],
      "properties": {
        "kind": {"const": 9042},
        "tags": {
          "type": "array",
          "items": {"$ref": "#/$defs/forbiddenTag"},
          "allOf": [
            {"contains": {"type": "array", "prefixItems": [{"const": "p"}, {"$ref": "#/$defs/hex64"}]}},
            {"contains": {"type": "array", "prefixItems": [{"const": "amount"}, {"$ref": "#/$defs/xmr"}]}},
            {"contains": {"type": "array", "prefixItems": [{"const": "unit"}, {"const": "xmr"}]}},
            {"contains": {"type": "array", "prefixItems": [{"const": "address"}, {"type": "string", "pattern": "^[1-9A-HJ-NP-Za-km-z]{95}$"}]}}
          ]
        }
      }
    },
    {
      "title": "Confirmation",
      "type": "object",
      "required": ["kind", "pubkey", "created_at", "tags", "content", "id", "sig"],
      "properties": {
        "kind": {"const": 9044},
        "content": {"const": ""},
        "tags": {
          "type": "array",
          "items": {"$ref": "#/$defs/forbiddenTag"},
          "allOf": [
            {"contains": {"type": "array", "prefixItems": [{"const": "e"}, {"$ref": "#/$defs/hex64"}]}},
            {"contains": {"type": "array", "prefixItems": [{"const": "p"}, {"$ref": "#/$defs/hex64"}]}},
            {"contains": {"type": "array", "prefixItems": [{"const": "amount"}, {"$ref": "#/$defs/xmr"}]}},
            {"contains": {"type": "array", "prefixItems": [{"const": "method"}, {"enum": ["tx-proof", "wallet-match"]}]}},
            {"contains": {"type": "array", "prefixItems": [{"const": "t"}, {"$ref": "#/$defs/hex64"}]}},
            {"contains": {"type": "array", "prefixItems": [{"const": "v"}, {"const": "nkip02/1"}]}}
          ]
        }
      }
    }
  ]
}