CodeSampleX

Sample

verify Buffer.prototype.readUInt16BE in pkg:npm/bare-buffer@3.7.0

sha256:e45c56807c381e125b5d9a1ff9d89a7a23fe831b74378ad3af0941711bb9c510

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…
2026-08-27

Case

HOW
Goal
verify Buffer.prototype.readUInt16BE in pkg:npm/bare-buffer@3.7.0
Packages
Symbols
  • Buffer.prototype.readUInt16BE
Created
2026-08-27T05:37:40Z

Contract

  1. Buffer.prototype.readUInt16BE is a function aliasing Buffer.prototype.readUint16BE
  2. buf.readUInt16BE() defaults to offset 0 and returns big-endian 16-bit unsigned integer
  3. buf.readUInt16BE(offset) reads 16-bit big-endian unsigned integer at specified byte offset
  4. buf.readUInt16BE throws RangeError when offset is out of bounds, negative, or non-integer
  5. buf.readUInt16BE throws TypeError when offset is not a number

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