Sample
verify pkg:npm/yaml@2.9.0
sha256:bfc4fd3c833fd3b2db3e407542fbbbd8cb2ab356762661b24442d7afe3442af7
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 22.22 linux 24 · ubuntu · glibc 2.39 x64 node 22.22 javascript npm 11 wsl
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
- Environment
- node 22.22.2
- Created
- 2026-08-19T11:52:23Z
Contract
- Parser.parse streams Concrete Syntax Tree (CST) tokens from YAML string input
- Composer.compose transforms CST tokens into yaml.Document AST instances
- Composer.next and Composer.end stream CST tokens incrementally into Documents across multi-document boundaries
- CST.stringify serializes CST tokens back into YAML formatted text preserving comments and formatting
- CST.visit traverses CST nodes with control flow signals visit.SKIP, visit.BREAK, and visit.REMOVE
- CST.setScalarValue updates scalar token values in-place within the CST
- CST.createScalarToken constructs formatted scalar CST tokens including double-quoted and block styles
Files
- PROMPT.md
- csx.json
- package-lock.json
- package.json
- spec.json
- test/contract.mjs
Origin Seeder
anonymous