CodeSampleX

Sample

verify pkg:npm/safe-buffer@5.2.1

sha256:24681094b1cfd935fd30d14b50dffdb980ecbb408fd291c7b039f45ad39c02d6

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…
2026-08-23

Case

HOW
Goal
verify pkg:npm/safe-buffer@5.2.1
Packages
Environment
node 22.23.2
Created
2026-08-23T07:02:18Z

Contract

  1. Buffer.alloc allocates zero-filled buffer of requested size or filled with specified value
  2. Buffer.from creates buffer from string with specified encoding
  3. Buffer.from creates buffer from array of byte values
  4. Buffer.from creates buffer copy from existing buffer or arrayBuffer slice
  5. Buffer.allocUnsafe allocates buffer of requested size
  6. Buffer.concat joins multiple buffer instances into a single buffer
  7. Buffer.isBuffer correctly identifies buffer instances and rejects non-buffers
  8. Buffer.byteLength accurately measures string byte lengths for various encodings
  9. SlowBuffer creates un-pooled buffer instance of requested size

Files

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

Download the source artifact (tar.gz)

Origin Seeder

anonymous