{
  "tool_id": "art-191-conversion-receipt-builder",
  "kernel_id": "art-191-conversion-receipt-builder",
  "display_name": "Conversion Receipt Builder",
  "tool_version": "1.0.0",
  "mandate_type": "cryptographic_mandate",
  "purpose": "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.",
  "control_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.",
  "declared_inputs": [],
  "declared_outputs": [
    "art-192-conversion-receipt-verifier"
  ],
  "kernel_digest": "sha256:fe8a41d83ea5eaabdcef73754d6758eb23fbe1550f5f16408f1aa180a8204679",
  "trust_label": "deferred -- deterministic source published, zkVM proof not yet generated",
  "data_vintage": "2026-07-10",
  "last_validated": "2026-07-10",
  "conformance_fixtures_vendored": true,
  "compute_proof_ready": "ready",
  "wave": 34,
  "source_url": "https://ainumbers.co/chaingraph/art-191-conversion-receipt-builder.html",
  "generated_at": "2026-07-25T20:02:55.601Z"
}