{
  "tool_id": "art-681-best-execution-evidence-pack",
  "kernel_id": "art-681-best-execution-evidence-pack",
  "display_name": "Best-Execution Evidence Pack",
  "tool_version": "1.0.0",
  "mandate_type": "compliance_control",
  "purpose": "Compiles a caller-declared best-execution monitoring evidence pack: the fill-weighted average price improvement in basis points across declared per-venue fills (2dp half-up), the list of declared negative-improvement venues in declared order, and an overall verdict (REVIEW_ITEM_FLAGGED iff a negative-improvement venue is declared; else WITHIN_POLICY). Declared-fill discipline: per-venue fill counts and improvements are the caller declarations, never observations this kernel makes; no order store, venue connection, or fill observer is read. Basis: Commission Delegated Regulation (EU) 2026/825 on order execution policies (MiFIR review package; replaces discontinued RTS 27/28 published-table reporting with internal evidence), which applies from 12 February 2028 (measured 2026-09-05; derive: OJ publication plus the stated application period per the staging spec note). Absent or invalid venue records fail closed with each offending input named. Zero network, zero storage, zero clock.",
  "control_description": "Compiles a caller-declared best-execution monitoring evidence pack: the fill-weighted average price improvement in basis points across declared per-venue fills (2dp half-up), the list of declared negative-improvement venues in declared order, and an overall verdict (REVIEW_ITEM_FLAGGED iff a negative-improvement venue is declared; else WITHIN_POLICY). Declared-fill discipline: per-venue fill counts and improvements are the caller declarations, never observations this kernel makes; no order store, venue connection, or fill observer is read. Basis: Commission Delegated Regulation (EU) 2026/825 on order execution policies (MiFIR review package; replaces discontinued RTS 27/28 published-table reporting with internal evidence), which applies from 12 February 2028 (measured 2026-09-05; derive: OJ publication plus the stated application period per the staging spec note). Absent or invalid venue records fail closed with each offending input named. Zero network, zero storage, zero clock.",
  "declared_inputs": [],
  "declared_outputs": [],
  "kernel_digest": "sha256:fdd1917a5a6fa8051b0636a4e2a78af93da66b2cea56d8f699fd0cf8f63a0d20",
  "trust_label": "independently verified: zkVM execution proof (risc0/groth16-bn254)",
  "data_vintage": "2026-09-06",
  "last_validated": "2026-09-06",
  "conformance_fixtures_vendored": true,
  "compute_proof_ready": "ready",
  "wave": 116,
  "source_url": "https://ainumbers.co/tools/681-best-execution-evidence-pack.html",
  "generated_at": "2026-09-08T07:15:12.150Z"
}