Sample
verify pkg:npm/mime@1.6.0
sha256:6447e33fae448da0ff6bdb7e3e3ea43498f8d75516ce67a5e704c04ae0241524
Publication state. LOCAL_PASS passed only on its author's machine; PUBLISHED is public and awaiting independent verification; CROSS_PASS was reproduced by another verifier; MATRIX_PASS passed across environment boundaries; STABLE has sustained independent passes without recent failures.
Evidence strength. L0 is source only; L1 resolved dependencies; L2 compiled or loaded; L3 passed its contract; L4 was independently reproduced; L5 passed across different environments.
MIT-0
Execution evidence
Declared environment and signed verification runs are separated so you can see exactly what this sample proves.
- Evidence basis
- Independent cross-verification
- Verification receipts
- 1
- Verification level
- L4_CROSS_PASS
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
- mime.lookup returns the correct MIME content type for standard file paths and extensions
- mime.lookup handles case-insensitive file extensions and nested paths
- mime.lookup returns application/octet-stream fallback for unrecognized file extensions
- mime.extension returns the canonical file extension for a given MIME type
- mime.charsets.lookup returns default character sets such as UTF-8 for text MIME types
- 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
Origin Seeder
anonymous