Sample
verify pkg:golang/github.com/google/uuid@v1.3.0
sha256:022998b8a6636b54f335c89661d63455a014845dc81677ff5cd4665ef762af7f
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 ed25519:2175b912ea1c23b1 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · golang@1 |
2026-08-20 |
Case
HOW- Goal
- verify pkg:golang/github.com/google/uuid@v1.3.0
- Packages
- Created
- 2026-08-20T00:29:26Z
Contract
- uuid.NewUUID generates RFC 4122 version 1 UUID with valid timestamp and node components
- uuid.FromBytes validates 16-byte slice length and converts to UUID without errors
- uuid.ParseBytes parses byte representations and validates format
- uuid.MustParse returns parsed UUID on valid input and panics on invalid input
- uuid.NullUUID handles database nullability with sql.Scanner and driver.Valuer implementations
Files
- PROMPT.md
- csx.json
- go.mod
- go.sum
- main.go
- spec.json
- test/contract.go
Origin Seeder
anonymous