{
  "tool_id": "art-353-etr-possession-chain-builder",
  "kernel_id": "art-353-etr-possession-chain-builder",
  "display_name": "ETR Possession-Chain Receipt Builder",
  "tool_version": "1.0.0",
  "mandate_type": "cryptographic_mandate",
  "purpose": "Builds a hash-chained possession-receipt evidence pack for an electronic transferable record (ETR) under UNCITRAL MLETR Art. 10/11: given the ETR's own document digest and an ordered set of control-transfer events (from_holder, to_holder, timestamp, signature -- all as supplied), each receipt binds the prior receipt's hash, so reordering, inserting, or deleting a transfer breaks the chain. Also checks holder-to-holder continuity and timestamp ordering, and computes a SHA-256 Merkle root over the chain -- a portable evidence pack a holder can present to a bank or court. Does not itself assess MLETR Art. 10/11 singularity/exclusive-control legal elements; that verdict is check_etr_control_evidence (art-352).",
  "control_description": "Builds a hash-chained possession-receipt evidence pack for an electronic transferable record (ETR) under UNCITRAL MLETR Art. 10/11: given the ETR's own document digest and an ordered set of control-transfer events (from_holder, to_holder, timestamp, signature -- all as supplied), each receipt binds the prior receipt's hash, so reordering, inserting, or deleting a transfer breaks the chain. Also checks holder-to-holder continuity and timestamp ordering, and computes a SHA-256 Merkle root over the chain -- a portable evidence pack a holder can present to a bank or court. Does not itself assess MLETR Art. 10/11 singularity/exclusive-control legal elements; that verdict is check_etr_control_evidence (art-352).",
  "declared_inputs": [
    "art-352-etr-control-evidence-checker"
  ],
  "declared_outputs": [],
  "kernel_digest": "sha256:13ba0669d5e6d376f027ff9d182bc9d5578a33196aa58a755e376dc29a2c4888",
  "trust_label": "independently verified -- zkVM execution proof (risc0/groth16-bn254)",
  "data_vintage": "2026-07-10",
  "last_validated": "2026-07-10",
  "conformance_fixtures_vendored": true,
  "compute_proof_ready": "ready",
  "wave": 61,
  "source_url": "https://ainumbers.co/chaingraph/art-353-etr-possession-chain-builder.html",
  "generated_at": "2026-07-25T20:02:55.601Z"
}