CodeSampleX

Sample

verify ip-address.AddressError in pkg:npm/ip-address@10.4.0

sha256:37484ce469d00b8b708f2997040a0c0e54d167379d2ba04184bf1a17729cb777

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@1
2026-08-21

Case

HOW
Goal
verify ip-address.AddressError in pkg:npm/ip-address@10.4.0
Packages
Symbols
  • ip-address.AddressError
Environment
node 22.23.2
Created
2026-08-21T09:16:14Z

Contract

  1. AddressError is an Error subclass with name property set to 'AddressError'
  2. AddressError constructor initializes message and optional parseMessage properties
  3. Address4 constructor throws an instance of AddressError when given an invalid IPv4 address string
  4. Address6 constructor throws an instance of AddressError when given an invalid IPv6 address string
  5. safeParseIp helper returns parsed addresses for valid inputs and returns caught AddressError on invalid inputs

Files

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

Download the source artifact (tar.gz)

Origin Seeder

anonymous