{
      "tool_id": "art-126-ai-act-art50-marking-checker",
      "tool_version": "1.0.0",
      "display_name": "EU AI Act Art. 50 Marking Checker",
      "mcp_name": "check_ai_act_art50_marking",
      "mandate_type": "compliance_mandate",
      "wave": 23,
      "gpu": false,
      "url": "https://ainumbers.co/chaingraph/art-126-ai-act-art50-marking-checker.html",
      "description": "Check c2pa.actions for a c2pa.created action whose IPTC digitalSourceType is in the AI set, and that machine-readable marking is present (Art. 50(2) adequacy). For deepfakes also requires Art. 50(4) disclosure. Penalty: 15M EUR / 3% global turnover. Applies 2 August 2026.",
      "input_schema_ref": "chaingraph/art-126-ai-act-art50-marking-checker.html#manifest",
      "consumes": [],
      "feeds": [
        "art-127-dual-layer-disclosure-verifier"
      ],
      "status": "live",
      "conformance_fixtures": true,
      "compute_capability": "server",
      "compute_images": [{"system":"sha256-source","image_id":"sha256:3baa21f9a81107596607b29ef5a324d8ef993842384da54dac31e65811e55479","valid_from":"2026-07-10"},{"system":"risc0","image_id":"sha256:a1a0bc89b5b1febaeda3519f6dbade0fa5ac16beeb143c4e1b01689573567bc6","valid_from":"2026-06-28"}],
      "compute_proof": {
        "type": "ZkVmReceipt",
        "system": "risc0",
        "receiptFormat": "groth16-bn254",
        "imageId": "sha256:a1a0bc89b5b1febaeda3519f6dbade0fa5ac16beeb143c4e1b01689573567bc6",
        "seal": "LBoqHtq8kKoKTYX+Jr5JEKv1hRoghBdIpm88R9xI9UwjMhGZUBvFdFXM11zvSuv9QU/5KGwgEdLztn7daFKjoAzq1F1YCc2ZXL6z12cF58pV++KceCZ7vOw+hh98dmsaILQ6S9W1UjqhPDOgQeTCh1EpKXT4PGZgGYyUhqZbDLQnjr1xZSpIjTbnJtAJtRIZO4mgfX/q2jeGgnXG355bbArZfih0lQLH80U7cGQ/ItBOFDVFWjXSPCMYqavkrfQXBT8QCJbKIGT1NwwnxSwafU95JAMdR3d2YX0mHKWgCUEqIdhEergKuNoIZUCGNkePgte0UGlODNYz4I8k9PKFow==",
        "journal": {
          "chaingraph_version": "0.4.0",
          "kernel_digest": "sha256:48bf33471e85d3d3486ef2066f99228edcf23f0cee73150a155b414e9f07fbb6",
          "output": {}
        }
      },
      "export_capability": [
        "xlsx",
        "csv",
        "pdf",
        "xbrl:ocg-ext"
      ]
    }