Sample
verify pkg:golang/github.com/golang-jwt/jwt/v5@v5.3.0
sha256:c5ca2b1fbfe3ae84ee32c5dc7c56d507a0e3cc17c89f609dbbbfd277a3a72e51
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
linux 24 · ubuntu · glibc 2.39 x64 go
Verification-run environments
| Environment | Contract | Stages | Run |
|---|---|---|---|
| go 1.26 · linux alpine/x64 · docker ed25519:c1973797be207ac4 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · golang@1 |
2026-08-20 |
Case
HOW- Goal
- verify pkg:golang/github.com/golang-jwt/jwt/v5@v5.3.0
- Packages
- Created
- 2026-08-20T13:02:51Z
Contract
- jwt.NewWithClaims creates and signs a valid JWT token with HS256 HMAC-SHA256 method
- jwt.ParseWithClaims verifies token signature and decodes custom claims matching the original payload
- jwt.Parse rejects expired tokens and returns jwt.ErrTokenExpired
- jwt.NewNumericDate correctly sets IssuedAt and ExpiresAt timestamps for time-based claim validation
- jwt.Parse rejects tokens with invalid signature returning jwt.ErrSignatureInvalid
Files
- PROMPT.md
- csx.json
- go.mod
- go.sum
- main.go
- spec.json
- test/contract.go
Origin Seeder
anonymous