{
  "tool_id": "art-594-tempo-mpp-voucher-receipt-verifier",
  "kernel_id": "art-594-tempo-mpp-voucher-receipt-verifier",
  "display_name": "Tempo MPP Voucher & Receipt Verifier",
  "tool_version": "1.0.0",
  "mandate_type": "compliance_control",
  "purpose": "Verifies a Tempo Machine Payments Protocol cumulative EIP-712 session voucher offline (ecrecover, no RPC or database lookup), validates a TIP-20 32-byte memo structurally, and validates/renders a merchant-side HTTP 402 Payment challenge plus a Payment-Receipt-shaped binding to an optional subject execution_hash. Voucher struct and channel-state field names confirmed against the primary TIP20ChannelReserve.sol contract source, not just secondary docs. Never holds a private key, never signs, never escrows third-party funds, never initiates a payment, never operates a live endpoint -- every field is caller-supplied and echoed, nothing is fetched or resolved independently. A receiving address is not custody.",
  "control_description": "Verifies a Tempo Machine Payments Protocol cumulative EIP-712 session voucher offline (ecrecover, no RPC or database lookup), validates a TIP-20 32-byte memo structurally, and validates/renders a merchant-side HTTP 402 Payment challenge plus a Payment-Receipt-shaped binding to an optional subject execution_hash. Voucher struct and channel-state field names confirmed against the primary TIP20ChannelReserve.sol contract source, not just secondary docs. Never holds a private key, never signs, never escrows third-party funds, never initiates a payment, never operates a live endpoint -- every field is caller-supplied and echoed, nothing is fetched or resolved independently. A receiving address is not custody.",
  "declared_inputs": [],
  "declared_outputs": [],
  "kernel_digest": "sha256:8f2fed1a5536e8df4848f7026a0126867f1ee41058c3aac5f5bbaf57e9dc5cae",
  "trust_label": "deferred: deterministic source published, zkVM proof not yet generated; New shard; awaiting the async GPU proving queue (S18 steady-state).",
  "data_vintage": "2026-08-16",
  "last_validated": "2026-08-16",
  "conformance_fixtures_vendored": true,
  "compute_proof_ready": "deferred",
  "wave": 99,
  "source_url": "https://ainumbers.co/chaingraph/art-594-tempo-mpp-voucher-receipt-verifier.html",
  "generated_at": "2026-08-16T11:22:32.665Z"
}