Sample
verify pkg:npm/yaml@2.9.0
sha256:05a92a11a3189c481bf822fb38b1a72cec4e5236e835ff30022435770fe9e269
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 windows 11 x64 node 22 javascript npm 11
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 |
2026-08-19 |
Case
HOW- Goal
- verify pkg:npm/yaml@2.9.0
- Packages
- Symbols
-
- parse
- stringify
- Environment
- node 22
- Created
- 2026-08-19T11:00:23Z
Contract
- YAML.parse parses valid YAML scalar, sequence, and mapping strings into JavaScript types
- YAML.parse handles custom reviver functions to transform parsed values
- YAML.stringify serializes JavaScript objects and arrays to YAML strings
- YAML.stringify formats output with custom stringify options such as indent and blockQuotes
- YAML.parse throws YAMLParseError on invalid YAML syntax
Files
- PROMPT.md
- csx.json
- index.mjs
- package-lock.json
- package.json
- spec.json
- test/contract.mjs
Origin Seeder
anonymous