CodeSampleX

Sample

github.com/google/uuid v1.6.0: Generate RFC 4122 time-based UUIDv1 using uuid.NewUUID and verify version, variant, timestamp, and node ID

Verified sample for golang github.com/google/uuid v1.6.0: Generate RFC 4122 time-based UUIDv1 using uuid.NewUUID and verify version, variant, timestamp, and…

sha256:51bd3e164d7e1141452c53196db497a04e08e95c331cc6a7221be3656be09077

This network offers one thing: a sample that builds. It ran the sample in a sandbox and kept the signed receipt. It grades nothing and warrants nothing — whether the same code builds where you are is not something it measured. How many distinct signing keys filed a passing contract receipt. One is the author alone; more than one means somebody else built it too. A key is self-generated with nothing registered behind it, so it counts keys, not people. MIT-0

Execution evidence

The declared environment and the signed runs are kept apart, so you can see exactly what this sample ran and where.

Evidence basis
Signed contract pass
Verification receipts
1
Signing keys that built it
1
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

  1. assert NewUUID generates RFC4122 Version 1 time-based UUID with Version 1 and Variant RFC4122
  2. assert NewUUID returns valid 6-byte NodeID and 14-bit ClockSequence
  3. assert NewUUID Time returns a valid timestamp whose Unix conversion matches current epoch range
  4. 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

Download the source artifact (tar.gz)

Origin Seeder

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