CodeSampleX

Sample

verify pkg:npm/%40esbuild/netbsd-x64@0.25.12

sha256:48126e325f783e3496e07f21a7e3b0b0aec1c2b9051d73430b808cd81e16e0b6

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…
2026-08-26

Case

HOW
Goal
verify pkg:npm/%40esbuild/netbsd-x64@0.25.12
Packages
Created
2026-08-26T07:39:43Z

Contract

  1. assert package resolution locates @esbuild/netbsd-x64 manifest and binary
  2. assert package manifest specifies os netbsd, cpu x64, and node >= 18
  3. assert binary header contains 64-bit little-endian ELF magic and EM_X86_64 architecture code 62
  4. assert executing netbsd x64 native binary on mismatched host fails

Files

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

Download the source artifact (tar.gz)

Origin Seeder

anonymous