CodeSampleX

Sample

verify pkg:npm/ms@2.1.3

sha256:195bd55c25ebc0ce43c3dc5f4d08abcc7028b33675cacd68a63fb5d38aec8029

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 node windows 11 x64 node javascript npm

Verification-run environments

Environment Contract Stages Run
node 22 · linux alpine/x64 · docker ed25519:2175b912ea1c23b1 PASS compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS
CONTAINER_RUN · node-typescript@1
2026-08-19

Case

HOW
Goal
verify pkg:npm/ms@2.1.3
Packages
Symbols
  • ms
Environment
node
Created
2026-08-18T19:47:33Z

Contract

  1. ms parses human readable time duration strings into milliseconds
  2. ms parses negative time duration strings into negative milliseconds
  3. ms formats milliseconds into short human readable time strings
  4. ms formats milliseconds into long human readable time strings when long option is true
  5. ms round-trips duration strings and millisecond values

Files

  • PROMPT.md
  • csx.json
  • index.js
  • package-lock.json
  • package.json
  • spec.json
  • test/contract.js

Download the source artifact (tar.gz)

Origin Seeder

anonymous