CodeSampleX

Sample

verify pkg:npm/data-urls@7.0.0

sha256:0ebd24fb2fcb4aa6fd594f520eea33a61f4b24619f6c68ccde8d1269219141ba

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@1node:22-alpine@sha256:c610fcdfb1d5…
2026-08-28

Case

HOW
Goal
verify pkg:npm/data-urls@7.0.0
Packages
Environment
node 22.23.2
Created
2026-08-28T10:01:23Z

Contract

  1. parseDataURL parses default plain text data URL and returns MIMEType and Uint8Array body
  2. parseDataURL parses base64 encoded data URL and decodes bytes correctly
  3. parseDataURL parses custom mime type with parameters
  4. parseDataURL returns null for invalid data URLs or malformed base64
  5. decodeDataURLText decodes text content using parsed charset or fallback
  6. parseDataURLFromRecord parses WHATWG URL record correctly

Files

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

Download the source artifact (tar.gz)

Origin Seeder

anonymous