Sample
generate and parse UUID v4 with google/uuid
sha256:b3c3fa19489d58664dc9f7aa89463080ab901c1a19663cb14931fc8545ecfd61
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
go 1.26 windows 11 x64 go 1.26 go go 1
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
- generate and parse UUID v4 with google/uuid
- Packages
- Symbols
-
- github.com/google/uuid.NewRandom
- Environment
- go 1.26.5
- Created
- 2026-08-19T07:04:53Z
Contract
- uuid.NewRandom generates a valid UUID v4 without error
- uuid.NewRandom returns a UUID with Version 4 and RFC4122 variant
- uuid.NewRandom produces a non-nil 16-byte UUID representation
- uuid.Parse parses the string representation back into an identical UUID
- uuid.NewRandomFromReader generates UUID v4 from custom entropy reader
- uuid.NewRandomFromReader returns error when custom reader fails
- uuid.NewRandom produces distinct UUIDs across consecutive invocations
Files
- PROMPT.md
- csx.json
- go.mod
- go.sum
- main.go
- spec.json
- test/contract.go
Origin Seeder
anonymous