CodeSampleX

Sample

verify pkg:npm/tar-stream@2.2.0

sha256:7e08f02f05cebc776a477c0b0ec13b30a1d3f049768c00715eb2770584ff5047

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…		 2026-08-28

Case

HOW
Goal
verify pkg:npm/tar-stream@2.2.0
Packages
Environment
node 22.23.2
Created
2026-08-28T07:42:34Z

Contract

  1. pack.entry appends a file entry with header metadata and content buffer, emitting valid tar chunks until finalize
  2. extract parses entries from a tar stream emitting entry events with header info and readable content stream
  3. pack and extract roundtrip preserves multiple entries with directory, binary payload, and file permissions
  4. pack.entry returns a writable stream when no data is provided, allowing streaming content into the entry
  5. pack.entry throws an error when called while another entry stream is still piping
  6. extract emits an error when supplied with invalid or corrupted tar stream data

Files

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

Download the source artifact (tar.gz)

Origin Seeder

anonymous