proto/asset_types_assertion.proto

// Copyright 2026 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//    https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//

edition = "2024";

package credentio;

import "cbor/tags.proto";
import "proto/asset_type.proto";

// An assertion that provides information on the type of the asset, specifically
// additional context on how to parse or otherwise process it.
// Based on `asset-type-map`:
// https://spec.c2pa.org/specifications/specifications/2.4/specs/C2PA_Specification.html#_asset_type.
message AssetTypesAssertion {
  string media_type = 3
      [(cbor.tags) = { is_required: false, name: "dc:format" }];
  // Types related to the asset.
  repeated AssetType types = 1 [(cbor.tags) = { is_required: false }];

  reserved 2;
}