GENIUS Act Reserve Attestation Pre-Check: OpenChainGraph compute node (attestation_mandate). Regulatory deadline: 2027-01-01 (GENIUS Act effective ≤ January 2027; monthly reserve reports + annual PCAOB audit (>$50B issuers); FDIC NPRM April 2026). Deterministic OpenChainGraph compute node. By default (compute:"auto") inputs are computed server-side on Cloudflare Workers for gpu:false nodes with a registered kernel; compute:"browser" forces client-side execution and returns a browser delegation URL instead. gpu:true nodes always delegate to the browser. Inputs are processed transiently to compute the response and are not stored, logged, or retained. Use synthetic or anonymised inputs only. Exports an AP2 artifact with execution_hash for chain provenance. Output feeds: ptg-01-ap2-prompt-template-generator. Open at: https://ainumbers.co/chaingraph/art-06-genius-act-reserve-attestation.html FV-status (published/proven/still-trusted for this spec): /fv-status/ca4e1dca8343f788a296161f0e19712f7afb7e5eaec0431081e715a4cc34b784.json — a snapshot, not a subscription; this receipt verifies offline regardless of whether that file is ever fetched. Summary: 1:1 reserve coverage, reserve-composition eligibility against GENIUS Act permitted-asset classes, monthly reserve-report figures against AICPA 2025 Criteria for CEO/CFO certification. Outputs: aicpa_2025_score_pct, applicable_deadline, asset_results, attestation_readiness_determination, conditional_assets_usd, coverage_ratio_pct, failing_dimensions, prohibited_assets_usd, regulatory_framework, reserve_shortfall_usd, total_liabilities_usd, total_reserves_usd, warnings. Output schema: call describe_tool("precheck_reserve_attestation").