CodeSampleX

Sample

mime 1.6.0

Verified sample for npm mime 1.6.0. The contract ran on node 22 · linux alpine/x64 · docker and passed: mime.lookup returns the correct MIME content type for…

sha256:6447e33fae448da0ff6bdb7e3e3ea43498f8d75516ce67a5e704c04ae0241524

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 ed25519:2175b912ea1c23b1 PASS compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS
CONTAINER_RUN · node-typescript@1		 2026-08-20

Case

HOW
Goal
verify pkg:npm/mime@1.6.0
Packages
Environment
node 22.23.2
Created
2026-08-20T01:44:38Z

Contract

  1. mime.lookup returns the correct MIME content type for standard file paths and extensions
  2. mime.lookup handles case-insensitive file extensions and nested paths
  3. mime.lookup returns application/octet-stream fallback for unrecognized file extensions
  4. mime.extension returns the canonical file extension for a given MIME type
  5. mime.charsets.lookup returns default character sets such as UTF-8 for text MIME types
  6. mime.define allows registering custom MIME types and extension mappings

Files

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

Download the source artifact (tar.gz)

Origin Seeder

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