{ "protocol": { "name": "CVP", "version": "1.0.0-proposed", "revision": "2026-09-13", "spec_sha256": "f62725968356c92930531cd6085db76e216da06e95be53d636b0d2cf3218b148", "spec": "https://www.calculatorx.com/developers/cvp/spec/1.0" }, "document_status": "proposed", "calculator": { "id": "uncertainty-propagate", "version": "1.9.8", "title": "Uncertainty Propagation Calculator", "formula_family": "gum-linear-rss", "capability_id": "engineering.uncertainty.propagate", "verification_revision": "2026-09-16.seeded-mc-o3" }, "profile": "engineering", "verified_scope": "Linear GUM: sum, difference, product, quotient, RSS, sensitivity, budget. Correlation matrices must be PSD (singular PSD allowed). O3 mpmath (80 dps) tabulated linear u_c. Monte Carlo: O2-B seeded mulberry32+Box-Muller replay of y_mean/u_c/percentiles (≤2 ULP) for sum, difference, product, quotient, correlated normal, and budget/rectangular; linear_u_c vs first-order GUM.", "deferred_scope": "Adaptive MCM, arbitrary PDFs, and the full JCGM 101 validation procedure. Budget sensitivity-coefficient dimensional algebra is not automatically verified. Correlated non-normal MC remains out of O2. O3 does not cover Monte Carlo.", "status": "VERIFIED", "verification_status": "VERIFIED", "production_freshness": "CURRENT", "overall_trust": "VERIFIED", "runner": { "name": "cvp-runner", "version": "1.0.0" }, "environment": { "runtime": "node", "runtime_version": "20.19.2", "numeric_model": "IEEE-754 binary64", "os": "darwin" }, "suite": { "id": "uncertainty-propagate", "version": "1.9.8", "uri": "https://www.calculatorx.com/evidence/engineering.uncertainty.propagate/1.9.8.json", "verification_revision": "2026-09-16.seeded-mc-o3" }, "obligation_set": [ "CVP-PROV-01", "CVP-MODEL-01", "CVP-SCOPE-01", "CVP-UNIT-01", "CVP-REF-01", "CVP-GOLD-01", "CVP-BND-01", "CVP-INV-01", "CVP-NUM-01", "CVP-COV-01", "CVP-CONTRACT-01", "CVP-DEP-01", "CVP-ART-01", "CVP-PROD-01", "CVP-DIM-01", "CVP-PROP-01", "CVP-IFACE-01" ], "provenance": { "mode": "direct", "sources": [ { "label": "JCGM 100:2008 — Evaluation of measurement data (GUM)", "kind": "standard", "reference": "Law of propagation of uncertainty", "url": "https://www.bipm.org/en/committees/jc/jcgm/publications" }, { "label": "JCGM 100:2008/Amd.1:2026 — Nonlinearity in measurement models", "kind": "standard", "reference": "Amendment 1", "url": "https://www.bipm.org/en/committees/jc/jcgm/publications" }, { "label": "JCGM GUM-6:2020 — Developing and using measurement models", "kind": "standard", "reference": "Measurement modelling", "url": "https://www.bipm.org/en/committees/jc/jcgm/publications" }, { "label": "JCGM 101:2008 — Propagation of distributions using a Monte Carlo method", "kind": "standard", "reference": "GUM Supplement 1", "url": "https://www.bipm.org/en/committees/jc/jcgm/publications" }, { "label": "NIST Technical Note 1297", "kind": "other", "reference": "Guidelines for evaluating and expressing uncertainty", "url": "https://www.nist.gov/pml/nist-technical-note-1297" }, { "label": "NIST Guide to the SI (SP 811)", "kind": "other", "reference": "Expression of uncertainty with SI quantities", "url": "https://www.nist.gov/pml/special-publication-811" } ] }, "reference": { "items": [ { "class": "O1", "reference_scope": "model", "scope": "model", "label": "JCGM 100 linear uncertainty propagation / RSS; JCGM 101 MC subset" }, { "class": "O3", "reference_scope": "expected_values", "scope": "expected_values", "label": "Precomputed mpmath high-precision oracle for linear GUM u_c (80 dps) rounded to nearest binary64 — not V8 hypot", "engine": { "name": "uncertainty-propagate-mpmath-o3", "precision_bits": 265, "independent_of_iut": true, "same_runtime_as_iut": false, "library": "mpmath 1.4.1", "mpmath_dps": 80, "generator_version": "1.0.0", "generator_sha256": "a333b5bfb9467d5f1a793f2d2ce19a36ff5ba08bc142c777063d761f4f69f097", "table_sha256": "95094ad76da02ed4ff37a340b783e761737d11005227b367c00f072bb5bb279f", "seed": "20260916.uncertainty-o3", "source": "https://www.calculatorx.com/developers/cvp/reproduce/uncertainty-propagate-o3-tables.json", "public_table": "/developers/cvp/reproduce/uncertainty-propagate-o3-tables.json", "public_generator": "/developers/cvp/reproduce/generate-uncertainty-propagate-o3.py" } }, { "class": "O3", "reference_scope": "numerical_behavior", "scope": "numerical_behavior", "label": "Same O3 table vs IUT u_c; ≤2 ULP on tabulated linear vectors only, independent of Node/V8", "engine": { "name": "uncertainty-propagate-mpmath-o3", "precision_bits": 265, "independent_of_iut": true, "same_runtime_as_iut": false, "library": "mpmath 1.4.1", "mpmath_dps": 80, "generator_version": "1.0.0", "generator_sha256": "a333b5bfb9467d5f1a793f2d2ce19a36ff5ba08bc142c777063d761f4f69f097", "table_sha256": "95094ad76da02ed4ff37a340b783e761737d11005227b367c00f072bb5bb279f", "seed": "20260916.uncertainty-o3", "source": "https://www.calculatorx.com/developers/cvp/reproduce/uncertainty-propagate-o3-tables.json", "public_table": "/developers/cvp/reproduce/uncertainty-propagate-o3-tables.json", "public_generator": "/developers/cvp/reproduce/generate-uncertainty-propagate-o3.py" } }, { "class": "O2", "reference_scope": "expected_values", "scope": "expected_values", "label": "Separate-module uncertainty-propagate oracle — same V8 binary64 as IUT", "engine": { "name": "uncertainty-propagate-reference", "precision_bits": 53, "independent_of_iut": true } }, { "class": "O2", "reference_scope": "numerical_behavior", "scope": "numerical_behavior", "label": "O2 linear ULP + seeded mulberry32+Box-Muller Monte Carlo replay", "engine": { "name": "uncertainty-propagate-reference", "precision_bits": 53, "independent_of_iut": true } } ], "notes": "Golden expected values use a separate O2 module (not IUT transcription). O2 shares Node/V8 binary64 with the IUT unless noted otherwise." }, "controls": { "CVP-PROV-01": { "result": "PASS", "applicability": "required", "notes": "Sources present on evidence" }, "CVP-MODEL-01": { "result": "PASS", "applicability": "required", "notes": "GUM linear / RSS for published linear modes; Monte Carlo goldens replay seeded mulberry32+Box-Muller independently of the IUT; O3 tabulates linear hypot/RSS" }, "CVP-SCOPE-01": { "result": "PASS", "applicability": "required", "notes": "All published modes; MC is seeded independent replay plus linear_u_c, not full JCGM 101. O3 covers tabulated linear vectors only. Budget dimensional algebra deferred." }, "CVP-UNIT-01": { "result": "PASS", "applicability": "required", "notes": "Same-dimension inputs for binary modes" }, "CVP-REF-01": { "result": "PASS", "applicability": "required", "notes": "O1 model + O2 expected_values + O2 numerical_behavior (linear ULP + seeded MC replay) + O3 tabulated linear GUM" }, "CVP-GOLD-01": { "result": "PASS", "applicability": "required", "notes": "11/11 legacy golden; 18/18 oracle-backed numeric" }, "CVP-BND-01": { "result": "PASS", "applicability": "required", "notes": "47/47 CVP boundary · 48/48 legacy Evidence boundary" }, "CVP-INV-01": { "result": "PASS", "applicability": "required", "notes": "24 Evidence illegal-input + 5/5 oracle-backed error-code (exact_error_match, not ULP)" }, "CVP-NUM-01": { "result": "PASS", "applicability": "required", "notes": "max_error_observed_ulp=2; policy declared a priori" }, "CVP-COV-01": { "result": "PASS", "applicability": "required", "notes": "9/9 declared partitions (sum, difference, product, quotient, rss, sensitivity, budget, montecarlo, invalid-domain); PSD + duplicate/conflicting correlation invalids; MC difference/product/quotient/budget including g-mc-seeded-replay" }, "CVP-CONTRACT-01": { "result": "PASS", "applicability": "required", "notes": "8/8 CVP contract" }, "CVP-DEP-01": { "result": "PASS", "applicability": "required", "notes": "engine uncertainty-propagate; Node binary64" }, "CVP-ART-01": { "result": "PASS", "applicability": "required", "notes": "release_integrity.status=verified · digests: artifact_evidence_sha256=Evidence core (Trust freshness) · cvp_evidence_digest=artifacts.evidence_digest (fingerprint v2) · evidence_bundle_sha256=legacy Evidence JSON bytes · evidence_catalog_digest=attested_catalog_sha256 · production_sha256=bound production report · see artifacts.digest_registry" }, "CVP-PROD-01": { "result": "PASS", "applicability": "required", "notes": "this calculator CURRENT · bound snapshot pass @ 2026-09-16T05:54:53.263Z · live site-wide report stale @ 2026-09-16T05:54:53.957Z (12 other capabilities) · local checks pass · attestation_id=2f7e4f846b3fa6a52bb63f24f386d81a9eba0a4ad663523e481dd38a9f3a92b8 · This calculator CURRENT · This calculator is not affected · Bound attestation PASS @ 2026-09-16T05:54:53.263Z · Live production status STALE (12 capabilities; 152 remain CURRENT) @ 2026-09-16T05:54:53.957Z · Public schema 1.9.8 matches · Semantic contract ✓ · Production attested · Public/cache ✓ · Origin ✓ · schema_const=1.9.8 · report output-const=pass · evidence-sha256=pass · semantic-contract=pass · capability-html-public-origin-agree=pass · cvp-manifest-public-origin-agree=pass · cvp-latest-alias-agrees=pass · cvp-immutable-manifest-fetch=pass · cvp-immutable-manifest-sha256=pass · cvp-latest-alias-matches-immutable=pass · cvp-reproduce-manifest-agree=pass · calculator-html-cvp-projection=pass · evidence-html-cvp-projection=pass · attested_evidence_sha256=ba77209b933b0e65701d6f50e7ff9c03dd0ef4057487c5c8e2c001251273b4f9 · verified_at=2026-09-16T02:14:53.799Z · evidence_attested_at=2026-09-16T02:14:53.799Z · last_confirmed_current_at=2026-09-16T05:54:53.263Z · rendered_at=2026-09-16T05:55:07.925Z · binds=cvp_core_sha256", "check_result": "PASS", "production_state": "CURRENT", "binding_current": true }, "CVP-DIM-01": { "result": "PASS", "applicability": "applicable", "notes": "Combined standard uncertainty u_c" }, "CVP-PROP-01": { "result": "PASS", "applicability": "applicable", "notes": "29/29 property" }, "CVP-META-01": { "result": "SKIP", "applicability": "not_applicable", "notes": "No input→output transformation vectors in pack — control not in obligation set" }, "CVP-ROUND-01": { "result": "SKIP", "applicability": "not_applicable", "notes": "No inverse / round-trip vectors in pack — control not in obligation set" }, "CVP-XCAL-01": { "result": "SKIP", "applicability": "not_applicable", "notes": "No related calculator in the same formula family / no related-identity peers declared — control not in obligation set" }, "CVP-IFACE-01": { "result": "PASS", "applicability": "applicable", "notes": "UI (SSR) · REST · MCP equivalent (MCP uses calc API handler). ui-ssr is query-result HTML, not a live browser session." }, "CVP-ORACLE-01": { "result": "PASS", "applicability": "higher_assurance", "notes": "O3 10/10 tabulated vectors vs IUT · Published modes: linear GUM (sum, difference, product, quotient, RSS, sensitivity, budget) and seeded Monte Carlo replay of y_mean/u_c/percentiles. Not a full JCGM 101 validation procedure. RNG: mulberry32; normal sampler: Box-Muller. ≤2 ULP vs O3 applies only to the published tabulated linear GUM vectors (sum, difference, ρ=1 difference, product, quotient, RSS, sensitivity, 3×3 PSD, singular PSD, budget). It is not a whole-domain guarantee and does not cover Monte Carlo." }, "CVP-EXP-01": { "result": "SKIP", "applicability": "optional", "notes": "CalculatorX internal domain review — not CVP-EXP-01" } }, "tests": { "golden": { "passed": 18, "total": 18, "failed": 0, "case_ids": [ "g-sum", "g-difference", "g-difference-rho1", "g-product", "g-quotient", "g-rss", "g-sens", "g-sens-psd-3x3", "g-sens-singular-psd", "g-budget", "g-mc-sum", "g-mc-seeded-replay", "g-mc-sum-seed2", "g-mc-sum-corr", "g-mc-difference", "g-mc-product", "g-mc-quotient", "g-mc-budget-rect" ] }, "boundary": { "passed": 47, "total": 47, "failed": 0, "case_ids": [ "quotient-b-zero", "missing-ua", "boundary-product-b-zero", "boundary-quotient-a-zero", "boundary-all-zero-u", "boundary-coeffs-length", "boundary-empty-uncertainties", "boundary-neg-ua", "boundary-unit-mismatch", "boundary-unit-sum", "boundary-unit-si-sum", "boundary-unit-product", "boundary-unit-si-quotient", "boundary-unit-ohm", "boundary-unit-mv-ma", "boundary-unit-a-ohm", "boundary-nua-null-infinite", "boundary-mc-sum", "boundary-mc-N", "boundary-mc-budget", "boundary-rho-diff", "boundary-rho-out", "boundary-k-invalid", "boundary-sens-corr", "boundary-rss-corr-reject", "boundary-contrib-sum", "boundary-nueff-sens", "boundary-dof-length", "boundary-nua-alone", "boundary-student-t", "boundary-student-normal", "boundary-k-and-confidence", "boundary-confidence-range", "boundary-corr-confidence", "boundary-corr-confidence-sens", "boundary-mc-rect-corr", "boundary-mc-quotient-unstable", "boundary-cov-contrib", "boundary-budget", "boundary-budget-named-corr", "boundary-budget-empty", "boundary-budget-partial-x", "boundary-corr-psd-3x3", "boundary-corr-singular-psd", "boundary-corr-not-psd", "boundary-corr-duplicate", "boundary-corr-conflict" ] }, "invalid": { "passed": 29, "total": 29, "failed": 0, "case_ids": [ "quotient-b-zero", "missing-ua", "invalid-mode", "boundary-coeffs-length", "boundary-empty-uncertainties", "boundary-neg-ua", "boundary-unit-mismatch", "boundary-mc-N", "boundary-rho-out", "boundary-k-invalid", "boundary-rss-corr-reject", "boundary-dof-length", "boundary-nua-alone", "boundary-k-and-confidence", "boundary-confidence-range", "boundary-corr-confidence", "boundary-corr-confidence-sens", "boundary-mc-rect-corr", "boundary-mc-quotient-unstable", "boundary-budget-empty", "boundary-budget-partial-x", "boundary-corr-not-psd", "boundary-corr-duplicate", "boundary-corr-conflict", "inv-quotient-zero", "inv-mode", "inv-corr-not-psd", "inv-corr-duplicate", "inv-corr-conflict" ], "comparison": "exact_error_match", "records": [ { "id": "inv-quotient-zero", "comparison": "exact_error_match", "expected": { "code": "DIVISION_BY_ZERO" }, "actual": { "code": "DIVISION_BY_ZERO" }, "match": true }, { "id": "inv-mode", "comparison": "exact_error_match", "expected": { "code": "INVALID_MODE" }, "actual": { "code": "INVALID_MODE" }, "match": true }, { "id": "inv-corr-not-psd", "comparison": "exact_error_match", "expected": { "code": "CORRELATION_MATRIX_NOT_PSD" }, "actual": { "code": "CORRELATION_MATRIX_NOT_PSD" }, "match": true }, { "id": "inv-corr-duplicate", "comparison": "exact_error_match", "expected": { "code": "DUPLICATE_CORRELATION" }, "actual": { "code": "DUPLICATE_CORRELATION" }, "match": true }, { "id": "inv-corr-conflict", "comparison": "exact_error_match", "expected": { "code": "CONFLICTING_CORRELATION" }, "actual": { "code": "CONFLICTING_CORRELATION" }, "match": true } ] }, "property": { "passed": 29, "total": 29, "failed": 0, "case_ids": [ "property-sum-y", "property-sum-u", "property-diff-u", "property-product", "property-product-a-zero", "property-quotient-a-zero", "property-quotient-b-zero", "property-sens", "property-rss", "property-zero-u", "property-reported", "property-unit-match", "property-unit-mismatch", "property-unit-si-prefix", "property-unit-product", "property-unit-ohm", "property-unit-mv-ma", "property-rho-perfect", "property-rho-anti", "property-expanded-U", "property-sens-rho0", "property-contrib", "property-nueff", "property-types", "property-student-t", "property-budget", "property-mc-sum", "property-corr-singular-psd", "property-corr-not-psd" ], "kind": "fixed" }, "round_trip": { "passed": 0, "total": 0, "failed": 0, "case_ids": [] }, "metamorphic": { "passed": 0, "total": 0, "failed": 0, "case_ids": [] }, "contract": { "passed": 8, "total": 8, "failed": 0 }, "cross_interface": { "passed": 6, "total": 6, "failed": 0, "case_ids": [ "iface-sum", "iface-difference", "iface-quotient", "iface-sensitivity", "iface-budget", "iface-montecarlo" ] }, "o3": { "passed": 10, "total": 10, "failed": 0, "case_ids": [ "o3-sum", "o3-difference", "o3-difference-rho1", "o3-product", "o3-quotient", "o3-rss", "o3-sens", "o3-sens-psd-3x3", "o3-sens-singular-psd", "o3-budget" ], "generator_id": "uncertainty-propagate-mpmath-o3", "seed": "20260916.uncertainty-o3", "table_sha256": "95094ad76da02ed4ff37a340b783e761737d11005227b367c00f072bb5bb279f", "max_error_ulp": 2, "reproduce": "python3 generate-uncertainty-propagate-o3.py", "table_url": "/developers/cvp/reproduce/uncertainty-propagate-o3-tables.json", "generator_url": "/developers/cvp/reproduce/generate-uncertainty-propagate-o3.py", "claim_scope": "Published modes: linear GUM (sum, difference, product, quotient, RSS, sensitivity, budget) and seeded Monte Carlo replay of y_mean/u_c/percentiles. Not a full JCGM 101 validation procedure. RNG: mulberry32; normal sampler: Box-Muller. ≤2 ULP vs O3 applies only to the published tabulated linear GUM vectors (sum, difference, ρ=1 difference, product, quotient, RSS, sensitivity, 3×3 PSD, singular PSD, budget). It is not a whole-domain guarantee and does not cover Monte Carlo.", "reproduce_url": "https://www.calculatorx.com/evidence/engineering.uncertainty.propagate/reproduce" } }, "coverage": { "partitions": [ { "id": "sum", "description": "Binary sum", "exercised": true, "case_count": 23 }, { "id": "difference", "description": "Binary difference", "exercised": true, "case_count": 5 }, { "id": "product", "description": "Binary product", "exercised": true, "case_count": 7 }, { "id": "quotient", "description": "Binary quotient", "exercised": true, "case_count": 6 }, { "id": "rss", "description": "RSS of uncertainties", "exercised": true, "case_count": 7 }, { "id": "sensitivity", "description": "Sensitivity coefficients", "exercised": true, "case_count": 11 }, { "id": "budget", "description": "Named uncertainty budget", "exercised": true, "case_count": 7 }, { "id": "montecarlo", "description": "Monte Carlo seeded mulberry32+Box-Muller replay", "exercised": true, "case_count": 11 }, { "id": "invalid-domain", "description": "Invalid inputs", "exercised": true, "case_count": 29 } ] }, "numerical": { "representation": "IEEE-754 binary64", "tolerance": { "type": "ulp", "value": 2, "rationale": "Linear GUM u_c ≤2 ULP vs separate-module O2 (same V8). Monte Carlo goldens replay seeded mulberry32+Box-Muller sample mean/std/percentiles (≤2 ULP) plus linear_u_c. Declared a priori.", "declared_before_evaluation": true }, "claim_scope": "Published modes: linear GUM (sum, difference, product, quotient, RSS, sensitivity, budget) and seeded Monte Carlo replay of y_mean/u_c/percentiles. Not a full JCGM 101 validation procedure. RNG: mulberry32; normal sampler: Box-Muller. ≤2 ULP vs O3 applies only to the published tabulated linear GUM vectors (sum, difference, ρ=1 difference, product, quotient, RSS, sensitivity, 3×3 PSD, singular PSD, budget). It is not a whole-domain guarantee and does not cover Monte Carlo.", "max_error_observed": 2, "records": [ { "id": "g-sum", "reference": { "mode": "sum", "y": 150, "u_c": 0.223606797749979, "u_rel": 0.00149071198499986, "a": 100, "b": 50, "ua": 0.1, "ub": 0.2, "rho": 0 }, "actual": { "mode": "sum", "y": 150, "u_c": 0.223606797749979, "u_rel": 0.00149071198499986, "a": 100, "b": 50, "ua": 0.1, "ub": 0.2, "rho": 0, "nua": null, "nub": null, "unit": null, "unit_a": null, "unit_b": null, "contributions": [ { "i": 0, "label": "a", "c": 1, "u": 0.1, "variance": 0.010000000000000002, "percent": 20, "type": null, "nu": null }, { "i": 1, "label": "b", "c": 1, "u": 0.2, "variance": 0.04000000000000001, "percent": 80, "type": null, "nu": null } ], "covariance_contributions": [], "largest": { "i": 1, "label": "b", "percent": 80 }, "nu_eff": null, "nu_eff_infinite": false, "k": null, "U": null, "k_source": null, "confidence": null, "reported": { "u_c": 0.22, "y": 150, "significant_digits": 2, 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"attested_at": "2026-09-16T02:14:53.799Z" }, { "id": "engineering.uncertainty.propagate:cvp-manifest-public-origin-agree", "status": "pass", "detail": "engineering.uncertainty.propagate/1.9.8/2026-09-16.seeded-mc-o3/engineering/77cad1dafb2f", "scope": "last_attestation_snapshot", "current": true, "attestation_binding_current": true, "attested_at": "2026-09-16T02:14:53.799Z", "projection_compared": false }, { "id": "engineering.uncertainty.propagate:cvp-latest-alias-agrees", "status": "pass", "detail": "engineering.uncertainty.propagate/1.9.8/2026-09-16.seeded-mc-o3/engineering/77cad1dafb2f", "scope": "last_attestation_snapshot", "current": true, "attestation_binding_current": true, "attested_at": "2026-09-16T02:14:53.799Z", "projection_compared": false }, { "id": "engineering.uncertainty.propagate:cvp-immutable-manifest-fetch", "status": "pass", "detail": "public=200 origin=200", "scope": "last_attestation_snapshot", "current": true, "attestation_binding_current": true, "attested_at": "2026-09-16T02:14:53.799Z" }, { "id": "engineering.uncertainty.propagate:cvp-immutable-manifest-sha256", "status": "pass", "detail": "77cad1dafb2f", "scope": "last_attestation_snapshot", "current": true, "attestation_binding_current": true, "attested_at": "2026-09-16T02:14:53.799Z" }, { "id": "engineering.uncertainty.propagate:cvp-latest-alias-matches-immutable", "status": "pass", "detail": "engineering.uncertainty.propagate/1.9.8/2026-09-16.seeded-mc-o3/engineering/77cad1dafb2f", "scope": "last_attestation_snapshot", "current": true, "attestation_binding_current": true, "attested_at": "2026-09-16T02:14:53.799Z", "projection_compared": false }, { "id": "engineering.uncertainty.propagate:cvp-reproduce-manifest-agree", "status": "pass", "detail": "2026-09-16.seeded-mc-o3 · 95094ad76da0", "scope": "last_attestation_snapshot", "current": true, "attestation_binding_current": true, "attested_at": "2026-09-16T02:14:53.799Z" }, { "id": "engineering.uncertainty.propagate:calculator-html-cvp-projection", "status": "pass", "detail": "matches Trust display", "scope": "last_attestation_snapshot", "current": true, "attestation_binding_current": true, "attested_at": "2026-09-16T02:14:53.799Z" }, { "id": "engineering.uncertainty.propagate:evidence-html-cvp-projection", "status": "pass", "detail": "matches Trust display", "scope": "last_attestation_snapshot", "current": true, "attestation_binding_current": true, "attested_at": "2026-09-16T02:14:53.799Z" } ], "digest_registry": { "digest_algorithm": "sha256", "canonicalization": "json-sorted-keys-utf8", "entries": [ { "name": "cvp_core_sha256", "field": "artifacts.cvp_core_sha256", "digest_scope": "cvp_verification_fingerprint_v2", "value": "77cad1dafb2f101d223d169b6004aef18c17608b0179e28ec2f4d638fad89f26", "note": "Immutable verification core; excludes attestation/live-status and Evidence contract counts" }, { "name": "cvp_evidence_digest", "field": "artifacts.evidence_digest", "digest_scope": "cvp_verification_fingerprint_v2", "value": "77cad1dafb2f101d223d169b6004aef18c17608b0179e28ec2f4d638fad89f26", "note": "Alias of cvp_core_sha256 (historical field name)" }, { "name": "artifact_evidence_sha256", "field": "release_integrity.digests.evidence_core_sha256", "digest_scope": "evidence_artifact_core", "value": "da6612d4866cb4c184cf7a31e8675ea177e53b838afac8a26eac8eeb546eacf5", "note": "Published Evidence JSON core — Trust freshness / production bind subject" }, { "name": "evidence_catalog_digest", "field": "artifacts.attested_catalog_sha256", "digest_scope": "capability_catalog", "value": "f89399c8dda78af9b2d784bf34d77b786cf749392d54e5e00bd3707c3fcdd13e", "note": "Capability catalog integrity; site-wide, not per-suite fingerprint" } ] }, "cvp_core_sha256": "77cad1dafb2f101d223d169b6004aef18c17608b0179e28ec2f4d638fad89f26" }, "dependencies": [ { "name": "uncertainty-propagate-engine", "version": "1.9.8" }, { "name": "uncertainty-propagate-reference-oracle", "version": "1.0.0" }, { "name": "uncertainty-propagate-mpmath-o3-table", "version": "uncertainty-propagate-mpmath-o3" }, { "name": "node", "version": "20.19.2" } ], "attestation": { "status": "CURRENT", "href": "/.well-known/calculatorx-production-attestation.json", "id": "2f7e4f846b3fa6a52bb63f24f386d81a9eba0a4ad663523e481dd38a9f3a92b8", "attested_at": "2026-09-16T02:14:53.799Z", "last_confirmed_current_at": "2026-09-16T05:54:53.263Z", "site_attestation_current": false, "capability_attestation_current": true, "bound_snapshot_status": "pass", "live_report_status": "stale", "bound_attested_at": "2026-09-16T05:54:53.263Z", "live_updated_at": "2026-09-16T05:54:53.957Z", "bound_snapshot": { "status": "pass", "attested_at": "2026-09-16T05:54:53.263Z", "site_stale_count": 12 }, "live_site_status": { "href": "/.well-known/calculatorx-production-attestation.json" }, "bound_snapshot_site_stale_count": 12, "site_stale_capability_count": 12, "evidence_attested_at": "2026-09-16T02:14:53.799Z" }, "domain_review": { "status": "ABSENT", "spec_version": "1.9.8", "external_third_party": false, "note": "Supplemental CalculatorX internal domain review — see internal_review" }, "internal_review": { "status": "PASS", "reviewer_role": "metrology-engineer", "reviewed_by": "CalculatorX engineering review", "spec_version": "1.9.8", "independence": "internal", "external_third_party": false }, "timestamps": { "verified_at": "2026-09-16T02:14:53.799Z", "generated_at": "2026-09-16T02:14:53.799Z", "rendered_at": "2026-09-16T05:55:07.925Z", "notes": "verified_at/generated_at mark the first publication of this cvp_core_sha256 (artifacts.evidence_digest alias) for suite verification. evidence_attested_at/attested_at is the first production bind of that core digest. last_confirmed_current_at is the latest site-wide report that still confirms CURRENT. rendered_at is this JSON serialization and is not part of cvp_core_sha256 / evidence_digest. Production attestation binds cvp_core_sha256 (binds evidence_digest). Causal order: verified_at ≤ evidence_attested_at ≤ last_confirmed_current_at. attestation.bound_snapshot.site_stale_count is the site-wide stale capability count at Manifest bind time — not a live value. Fetch attestation.live_site_status.href for the current site report." }, "links": { "legacy_evidence": "https://www.calculatorx.com/evidence/engineering.uncertainty.propagate/1.9.8.json", "evidence_page": "https://www.calculatorx.com/evidence/engineering.uncertainty.propagate/1.9.8", "calculator": "https://www.calculatorx.com/calc/engineering/uncertainty-propagate", "schema": "https://www.calculatorx.com/developers/cvp/schema/cvp-evidence-1.0.json", "protocol": "https://www.calculatorx.com/developers/cvp/spec/1.0", "manifest": "https://www.calculatorx.com/evidence/engineering.uncertainty.propagate/1.9.8.cvp.json", "manifest_immutable": "https://www.calculatorx.com/evidence/engineering.uncertainty.propagate/1.9.8/2026-09-16.seeded-mc-o3.cvp.json", "reproduce": "https://www.calculatorx.com/evidence/engineering.uncertainty.propagate/reproduce", "o3_table": "https://www.calculatorx.com/developers/cvp/reproduce/uncertainty-propagate-o3-tables.json", "o3_generator": "https://www.calculatorx.com/developers/cvp/reproduce/generate-uncertainty-propagate-o3.py", "manifest_core": "https://www.calculatorx.com/evidence/engineering.uncertainty.propagate/1.9.8/2026-09-16.seeded-mc-o3.77cad1dafb2f.cvp.json" } }