{
      "tool_id": "art-191-conversion-receipt-builder",
      "tool_version": "1.0.0",
      "display_name": "Conversion Receipt Builder",
      "mcp_name": "build_conversion_receipt",
      "mandate_type": "cryptographic_mandate",
      "wave": 34,
      "gpu": false,
      "url": "https://ainumbers.co/chaingraph/art-191-conversion-receipt-builder.html",
      "description": "Binds one file-conversion event into a canonical receipt tying the input digest to the converter identity, the parameters, and the output digest. binding_sha256 is SHA-256 over the JCS-canonical receipt with binding_sha256 removed. Any external converter, including the heavy WASM Conversion Lab tools, can feed it digests, and it is the documented hand-off point for BrowserChain anchoring. This binds a transformation edge between two digests, which is a different job from anchor_document_integrity (art-121, existence and timestamp of one document). Returns the receipt plus checks for hex validity, converter identity completeness, and self-conversion. Zero network, zero PII.",
      "input_schema_ref": "chaingraph/art-191-conversion-receipt-builder.html#manifest",
      "consumes": [],
      "feeds": [
        "art-192-conversion-receipt-verifier"
      ],
      "status": "live",
      "conformance_fixtures": true,
      "compute_capability": "server",
      "compute_images": [{"system":"sha256-source","image_id":"sha256:e9c4a6255342b4fb2f2bd3687128e671dad4028f95ca277ee482fabe7b2b83ce","valid_from":"2026-07-10"},{"system":"risc0","image_id":"sha256:a1a0bc89b5b1febaeda3519f6dbade0fa5ac16beeb143c4e1b01689573567bc6","valid_from":"2026-07-02"}],
      "compute_proof": {
        "type": "ZkVmReceipt",
        "system": "risc0",
        "receiptFormat": "groth16-bn254",
        "imageId": "sha256:a1a0bc89b5b1febaeda3519f6dbade0fa5ac16beeb143c4e1b01689573567bc6",
        "seal": "JD5VQvLViDo2V4XdFqIuTDmIQ+vBwNBYxFWar5jhyX4Zpoqzmy8LexDCedLTPPOAxI/JAcjTwiRP/KEOTXXsAyetPNz6djs5Q33NkY9j26xQwyGbH75hU+1c7bPzOmK3LZsKzhO2F483fvQLQTtevrkzscGPGk2J8UECSivt25EGMVANx9CyH9YyFXIDrUhGo6Vg2MMabOsHYDrXF23laRapqTBR+sXxUKMObhQymDpb6IJKa3D5yW+oUMkKz20MEnnxH8JQlX093Zs04MWjgqAbDN20OqLGD2Zbj2xGsyEsnWPVVQEuyffyA5Pfl5Qa20kaGCbWSMEl8sJESu2ZhQ==",
        "journal": {
          "chaingraph_version": "0.4.0",
          "kernel_digest": "sha256:fe8a41d83ea5eaabdcef73754d6758eb23fbe1550f5f16408f1aa180a8204679",
          "output": {
            "all_checks_pass": true,
            "checks": [
              {
                "check": "input_sha256_is_64_hex",
                "detail": "valid",
                "pass": true
              },
              {
                "check": "output_sha256_is_64_hex",
                "detail": "valid",
                "pass": true
              },
              {
                "check": "converter_identity_complete",
                "detail": "name and version present",
                "pass": true
              },
              {
                "check": "not_self_conversion",
                "detail": "input and output digests differ",
                "pass": true
              },
              {
                "check": "parameters_free_of_pii_keys",
                "detail": "no PII-carrier keys detected",
                "pass": true
              }
            ],
            "receipt": {
              "binding_sha256": "7c0e135c7d670decbdea449f9dc580b75cc01ef50eb4bb3f5d3540050b6a30e7",
              "converter": {
                "name": "art-189-markdown-document-converter",
                "version": "1.0.0"
              },
              "input": {
                "format": "markdown",
                "sha256": "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
              },
              "output": {
                "format": "html",
                "sha256": "bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb"
              },
              "parameters": {
                "heading_ids": true,
                "table_support": true
              },
              "receipt_version": "1.0"
            }
          }
        }
      },
      "export_capability": [
        "json",
        "pdf",
        "vc"
      ]
    }