CodeSampleX

Sample

verify pkg:npm/uuid@7.0.3

sha256:358a048a4a8bbd92f050e65323db3d733203685d21bbe01c5762b10b995ade23

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
2
Verification level
L4_CROSS_PASS
Declared environment node 22.23 linux 24 · ubuntu · glibc 2.39 x64 node 22.23 javascript npm 10

Verification-run environments

Environment Contract Stages Run
node 22 · linux alpine/x64 · docker ed25519:c1973797be207ac4 SKIPPED compile:SKIPPED · contract:SKIPPED · load:SKIPPED · resolve:FAIL
CONTAINER_RUN · node-typescript@1
2026-08-20
node 22 · linux alpine/x64 · docker ed25519:d91480838ac982c9 PASS compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS
CONTAINER_RUN · node-typescript@1
2026-08-20

Case

HOW
Goal
verify pkg:npm/uuid@7.0.3
Packages
Environment
node 22.23.2
Created
2026-08-20T06:21:16Z

Contract

  1. v4 generates RFC 4122 version 4 random UUID strings and fills byte buffers
  2. v1 generates RFC 4122 version 1 timestamp-based UUID strings
  3. v5 generates deterministic RFC 4122 version 5 SHA-1 namespace UUIDs
  4. v3 generates deterministic RFC 4122 version 3 MD5 namespace UUIDs

Files

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

Download the source artifact (tar.gz)

Origin Seeder

anonymous