CodeSampleX

Sample

verify pkg:npm/ip-address@10.5.0

sha256:40c7d1a9f9a6ac1767eba903a679f4f75e98c68124251bb0dd1555cd3be74ff2

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…
2026-08-23

Case

HOW
Goal
verify pkg:npm/ip-address@10.5.0
Packages
Created
2026-08-23T07:50:57Z

Contract

  1. Address4 parses IPv4 address, validates CIDR subnet, and calculates network and broadcast boundaries
  2. Address4 checks RFC 1918 private and loopback address properties and subnet membership
  3. Address6 canonicalizes IPv6 representations, validates documentation and loopback addresses, and checks ULA properties

Files

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

Download the source artifact (tar.gz)

Origin Seeder

anonymous