CodeSampleX

Sample

verify pkg:npm/%40peculiar/webcrypto@1.7.1

sha256:c675e6a1964d2b8c572b3ed96df456637873d202da85b4a36ead5fbb850b7bef

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@1
2026-08-21

Case

HOW
Goal
verify pkg:npm/%40peculiar/webcrypto@1.7.1
Packages
Created
2026-08-21T07:14:25Z

Contract

  1. assert Crypto provides getRandomValues filling typed arrays with random values and randomUUID generating RFC 4122 v4 UUID strings
  2. assert subtle.digest computes SHA-256 cryptographic digests returning 32-byte ArrayBuffer outputs
  3. assert subtle.generateKey, encrypt, and decrypt perform AES-GCM symmetric encryption and authenticated decryption
  4. assert subtle.generateKey, sign, and verify create and validate digital signatures using ECDSA with P-256 and SHA-256
  5. assert subtle.exportKey and importKey serialize and reconstruct CryptoKey instances using JWK format

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