CodeSampleX

Sample

verify tar.c in pkg:npm/tar@6.2.1

sha256:d6a5b7e42ab68c72c740ce26691a58f1cd892ca53e3f1e0c705b8687f5c570ec

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…
2026-08-29

Case

HOW
Goal
verify tar.c in pkg:npm/tar@6.2.1
Packages
Symbols
  • tar.c
Created
2026-08-29T05:55:09Z

Contract

  1. tar.c creates a tar archive synchronously when sync option is enabled
  2. tar.c creates a gzip-compressed tar archive asynchronously returning a Promise
  3. tar.c returns a readable stream emitting tar archive chunks when file option is omitted

Files

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

Download the source artifact (tar.gz)

Origin Seeder

anonymous