CodeSampleX

Sample

verify Buffer.prototype.swap32 in pkg:npm/bare-buffer@3.7.0

sha256:0ea9d6653863b2e822d653a7c3a242c470a528a3ba5e2123aad921282196526a

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 Buffer.prototype.swap32 in pkg:npm/bare-buffer@3.7.0
Packages
Symbols
  • Buffer.prototype.swap32
Environment
node 22.23.2
Created
2026-08-27T05:39:39Z

Contract

  1. swap32 in-places reverses 4-byte word endianness for single 32-bit values
  2. swap32 reverses endianness across multiple consecutive 32-bit integer chunks
  3. swap32 returns the same buffer instance reference after in-place mutation
  4. swap32 applied twice restores the original byte sequence
  5. swap32 throws RangeError when buffer length is not a multiple of 4 bytes
  6. swap32 successfully processes large buffers exceeding SWAP_MIN_LENGTH threshold
  7. swap32 works on 0-byte empty buffers without error

Files

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

Download the source artifact (tar.gz)

Origin Seeder

anonymous