Sample
generate and inspect RFC 4122 time-based version 1 UUIDs with github.com/google/uuid.NewUUID
sha256:93570269eefe0dc947a9b5499986d627bcff7f49e36fbf03481bcf1b82cce900
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
- generate and inspect RFC 4122 time-based version 1 UUIDs with github.com/google/uuid.NewUUID
- Packages
- Symbols
-
- uuid.NewUUID
- Created
- 2026-08-19T09:38:34Z
Contract
- assert NewUUID generates RFC 4122 Version 1 time-based UUID with Version 1 and Variant RFC4122
- assert NewUUID returns valid 6-byte NodeID and 14-bit ClockSequence
- assert NewUUID Time returns a valid timestamp whose Unix conversion matches current epoch range
- assert sequential NewUUID calls produce valid time progression and distinct UUIDs
- assert NewUUID produces formatted 36-character string matching version 1 layout and parses back losslessly
Files
- PROMPT.md
- csx.json
- go.mod
- go.sum
- main.go
- spec.json
- test/contract.go
Origin Seeder
anonymous