CodeSampleX

Sample

github.com/google/uuid v1.6.0: Generate deterministic name-based UUIDv3 and UUIDv5 with google/uuid

Verified sample for golang github.com/google/uuid v1.6.0: Generate deterministic name-based UUIDv3 and UUIDv5 with google/uuid. The contract ran on go 1.26 …

sha256:e6164b57a1871e7f08f6334b13453d2065434dd4a53a7391f6ec0c832a0377cd

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 deterministic name-based UUIDv3 and UUIDv5 with google/uuid
Packages
Symbols
  • uuid.NewMD5
  • uuid.NewSHA1
Created
2026-08-18T20:14:53Z

Contract

  1. generate deterministic UUIDv3 using uuid.NewMD5 and assert Version is 3 and Variant is RFC4122
  2. generate deterministic UUIDv5 using uuid.NewSHA1 and assert Version is 5 and Variant is RFC4122
  3. assert uuid.NewMD5 and uuid.NewSHA1 match RFC 4122 Appendix B test vectors for DNS namespace
  4. assert distinct namespaces produce distinct UUIDs for the same name

Files

  • PROMPT.md
  • csx.json
  • go.mod
  • go.sum
  • sample.go
  • spec.json
  • test/contract.go

Download the source artifact (tar.gz)

Origin Seeder

anonymous