CodeSampleX

Sample

verify pkg:npm/tar@6.2.1

sha256:a5dda914ad844362e431df6a54ed6139d1507069147a413e592618897e478d56

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 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 PASS compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS
CONTAINER_RUN · node-typescript@1node:22-alpine@sha256:c610fcdfb1d5…		 2026-08-27

Case

HOW
Goal
verify pkg:npm/tar@6.2.1
Packages
Symbols
  • tar.create
  • tar.extract
  • tar.list
  • tar.replace
Environment
node 22.23.2
Created
2026-08-27T16:55:11Z

Contract

  1. tar.create packages files and nested directories into uncompressed and gzip-compressed tar archives
  2. tar.extract unpacks archive contents restoring file hierarchy and data integrity
  3. tar.create and tar.extract support synchronous operations via the sync option
  4. tar.create and tar.extract filter entries using custom predicate functions
  5. tar.extract supports stripping leading path components using the strip option
  6. tar.list reads entries from tar archives and emits metadata
  7. tar.replace appends or replaces entries in existing tar archives

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