Sample
verify pkg:golang/github.com/google/uuid@v1.6.0
sha256:9df7fef9e80622e689a4e8d1b6b8300949f79aa67faec25849b1eb10795157fe
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 wsl
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 pkg:golang/github.com/google/uuid@v1.6.0
- Packages
- Created
- 2026-08-18T21:47:41Z
Contract
- assert uuid.New, uuid.NewRandom, and uuid.NewString generate RFC 4122 version 4 random UUIDs with correct version and variant bits
- assert uuid.NewRandomFromReader reads 16 bytes from custom entropy source and sets version 4 and RFC 4122 variant bits while propagating reader errors
- assert uuid.Validate accepts valid standard, braced, and URN formatted UUID strings and rejects invalid formats or characters
- assert uuid.NewV6 generates time-ordered version 6 UUID with RFC 4122 variant and ordered timestamps
- assert uuid.SetNodeID and uuid.SetClockSequence configure custom node identifiers and clock sequences for time-based UUID generation
Files
- PROMPT.md
- csx.json
- go.mod
- go.sum
- main.go
- spec.json
- test/contract.go
Origin Seeder
anonymous