Sample
verify pkg:npm/math-intrinsics@1.1.0
sha256:55d75fdf72d550fb7c88a68807e78c293a5b5301f4d21faa43d7a8c2295d1765
Publication state. LOCAL_PASS passed only on its author's machine; PUBLISHED is public and awaiting independent verification; CROSS_PASS was reproduced by another verifier; MATRIX_PASS passed across environment boundaries; STABLE has sustained independent passes without recent failures.
Evidence strength. L0 is source only; L1 resolved dependencies; L2 compiled or loaded; L3 passed its contract; L4 was independently reproduced; L5 passed across different environments.
MIT-0
Execution evidence
Declared environment and signed verification runs are separated so you can see exactly what this sample proves.
- Evidence basis
- Independent cross-verification
- Verification receipts
- 1
- Verification level
- L4_CROSS_PASS
Declared environment
- Execution context
- node 22
- Operating system
- linux
- Architecture
- x64
- Runtime
- node 22
- Language
- javascript
- Package manager
- npm 10
Verification-run environments
- Execution context
- node 22
- Operating system
- linux alpine · musl
- Architecture
- x64
- Runtime
- node 22
- Language
- javascript
- Package manager
- npm
- Execution
- container · docker
Case
HOW- Goal
- verify pkg:npm/math-intrinsics@1.1.0
- Packages
- Symbols
-
- math-intrinsics/abs
- math-intrinsics/floor
- math-intrinsics/isFinite
- math-intrinsics/isInteger
- math-intrinsics/isNaN
- math-intrinsics/isNegativeZero
- math-intrinsics/max
- math-intrinsics/min
- math-intrinsics/mod
- math-intrinsics/pow
- math-intrinsics/round
- math-intrinsics/sign
- math-intrinsics/constants/maxArrayLength
- math-intrinsics/constants/maxSafeInteger
- math-intrinsics/constants/maxValue
- Environment
- node 22
- Created
- 2026-08-18T17:55:30Z
Contract
- abs returns absolute value for positive, negative, and signed zero inputs
- floor returns the largest integer less than or equal to a given number
- isFinite returns true only for finite number primitives and false for non-numbers and infinities
- isInteger returns true for integer numbers and false for non-integers and non-numbers
- isNaN returns true exclusively for NaN and false for non-NaN values including strings
- isNegativeZero correctly distinguishes -0 from +0 and other values
- max and min compute multi-argument numeric extremums correctly
- mod computes mathematical positive modulo for positive and negative numbers
- pow computes exponentiation base to power
- round returns the value of a number rounded to the nearest integer
- sign returns correct numeric sign for positive, negative, zero, and infinity
- constants expose maxArrayLength, maxSafeInteger, and maxValue with exact standard numeric values
Files
- PROMPT.md
- csx.json
- index.js
- package-lock.json
- package.json
- spec.json
- test/contract.js
Origin Seeder
anonymous
Verification receipts
-
node 22 · linux alpine/x64 · docker PASSed25519:2175b912ea1c23b1