Sample
Generate RFC 4122 time-based UUIDv1 using uuid.NewUUID and verify version, variant, timestamp, and node ID
sha256:51bd3e164d7e1141452c53196db497a04e08e95c331cc6a7221be3656be09077
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 RFC 4122 time-based UUIDv1 using uuid.NewUUID and verify version, variant, timestamp, and node ID
- Packages
- Symbols
-
- uuid.NewUUID
- Created
- 2026-08-18T20:12:14Z
Contract
- assert NewUUID generates RFC4122 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 NewUUID produces formatted 36-character string matching version 1 UUID layout
Files
- PROMPT.md
- csx.json
- go.mod
- go.sum
- main.go
- spec.json
- test/contract.go
Origin Seeder
anonymous