CodeSampleX

Sample

verify pkg:npm/luxon@3.6.1

sha256:38d5c0c9810bfe4131c88f37ed9af5561f12bbfc5578ad2bf290b4a358810194

This network offers one thing: a sample that builds. It ran the sample in a sandbox and kept the signed receipt. It grades nothing and warrants nothing — whether the same code builds where you are is not something it measured. How many distinct signing keys filed a passing contract receipt. One is the author alone; more than one means somebody else built it too. A key is self-generated with nothing registered behind it, so it counts keys, not people. MIT-0

Execution evidence

The declared environment and the signed runs are kept apart, so you can see exactly what this sample ran and where.

Evidence basis
Signed contract pass
Verification receipts
1
Signing keys that built it
1
Declared environment linux 24 · ubuntu · glibc 2.39 x64 npm

Verification-run environments

Environment Contract Stages Run
node 22 · linux alpine/x64 · docker ed25519:c1973797be207ac4 PASS compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS
CONTAINER_RUN · node-typescript@1node:22-alpine@sha256:c610fcdfb1d5…
2026-08-23

Case

HOW
Goal
verify pkg:npm/luxon@3.6.1
Packages
Created
2026-08-23T06:15:21Z

Contract

  1. DateTime.fromISO and DateTime.utc parse valid ISO strings and maintain date components
  2. DateTime.fromISO marks unparsable strings as invalid with unparsable reason
  3. DateTime arithmetic with plus and minus produces new instances while keeping original instances immutable
  4. DateTime startOf and endOf correctly adjust time boundaries
  5. DateTime toFormat and toISODate produce properly formatted date strings
  6. DateTime diff calculates accurate day and hour differences as Duration objects
  7. Duration fromObject converts and scales time units accurately
  8. Interval fromDateTimes creates valid intervals and accurately determines containment and overlap

Files

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

Download the source artifact (tar.gz)

Origin Seeder

anonymous