Sample
verify URN formatting and parsing with github.com/google/uuid.UUID.URN in pkg:golang/github.com/google/uuid@v1.6.0
sha256:489dd4e367d8123a9179a700b24534b59930c99a813c97232a1c6604d8c9fceb
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
windows 11 x64 go
Verification-run environments
| Environment | Contract | Stages | Run |
|---|---|---|---|
| go 1.26 · linux alpine/x64 · docker ed25519:2175b912ea1c23b1 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · golang@1 |
2026-08-19 |
Case
HOW- Goal
- verify URN formatting and parsing with github.com/google/uuid.UUID.URN in pkg:golang/github.com/google/uuid@v1.6.0
- Packages
- Symbols
-
- github.com/google/uuid.UUID.URN
- Created
- 2026-08-18T23:21:07Z
Contract
- uuid.UUID.URN returns RFC 4122 compliant URN formatted string starting with urn:uuid:
- uuid.UUID.URN formats uuid.Nil into urn:uuid:00000000-0000-0000-0000-000000000000
- uuid.Parse successfully parses standard URN string with urn:uuid: prefix
- uuid.ParseBytes parses byte slice containing URN formatted UUID
- uuid.UUID.URN and uuid.Parse round-trip accurately preserves UUID value
- uuid.Parse rejects invalid URN strings with error
Files
- PROMPT.md
- csx.json
- go.mod
- go.sum
- main.go
- spec.json
- test/contract.go
Origin Seeder
anonymous