Sample
verify pkg:npm/mime-db@1.54.0
sha256:09c1ef55abc26fb5d675288ee8ba2dc4fd875ded538d421dd0c3791a7f16cea5
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
- Operating system
- windows 11
- Architecture
- x64
- Package manager
- npm
Verification-run environments
- Execution context
- node 22
- Operating system
- linux alpine · musl
- Architecture
- x64
- Runtime
- node 22
- Language
- javascript
- Package manager
- npm
- Execution
- container · docker
Case
HOW- Goal
- verify pkg:npm/mime-db@1.54.0
- Packages
- Created
- 2026-08-18T18:10:20Z
Contract
- mime-db contains standard MIME type entries with source, extensions, charset, and compressible metadata
- db['application/json'] defines charset UTF-8, compressible true, and json extension
- db['text/html'] defines compressible true and html, htm extensions
- db['image/png'] defines non-compressible media type with png extension
- lookup retrieves MIME metadata for registered types and returns undefined for unknown types
- findTypeByExtension maps file extensions to corresponding media types
- isCompressible correctly identifies compressible text and data formats
- getExtensions retrieves all associated file extensions for a given MIME type
Files
- PROMPT.md
- csx.json
- index.mjs
- package-lock.json
- package.json
- spec.json
- test/contract.mjs
Origin Seeder
anonymous
Verification receipts
-
node 22 · linux alpine/x64 · docker PASSed25519:2175b912ea1c23b1