CodeSampleX

Sample

tar 6.2.1: u

Verified sample for npm tar 6.2.1: u. The contract ran on node 22 · linux alpine/x64 · docker and passed: tar.u asynchronously appends new files to an…

sha256:8bda6b85da7f6385e361985167607d4ae6d84e39f4629e5417a61e76d381f76a

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…		 2026-08-30

Case

HOW
Goal
verify tar.u in pkg:npm/tar@6.2.1
Packages
Symbols
  • tar.u
Environment
node 22.23.2
Created
2026-08-30T11:58:20Z

Contract

  1. tar.u asynchronously appends new files to an existing uncompressed tar archive
  2. tar.u updates existing archive entries when source files have updated mtime timestamps
  3. tar.u supports synchronous archive updates when sync option is set to true
  4. tar.u respects custom filter functions to selectively exclude files from archive updates
  5. tar.u preserves relative file hierarchies and directory paths when updating 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

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