CodeSampleX

Sample

github.com/google/uuid v1.6.0

Verified sample for golang github.com/google/uuid v1.6.0. The contract ran on go 1.26 · linux alpine/x64 · docker and passed: uuid.NewRandom generates a…

sha256:c25acc7e07f3185cbe7996a4c3bc87d8a52939742c019c7c1de35752e17a1dea

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
2
Signing keys that built it
2
Declared environment windows 11 x64 go

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
go 1.26 · linux alpine/x64 · docker ed25519:d91480838ac982c9 PASS compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS
CONTAINER_RUN · golang@1		 2026-08-19

Case

HOW
Goal
verify pkg:golang/github.com/google/uuid@v1.6.0
Packages
Created
2026-08-18T23:09:06Z

Contract

  1. uuid.NewRandom generates a version 4 UUID with RFC4122 variant
  2. uuid.NewV7 generates a version 7 time-ordered UUID
  3. uuid.NewUUID generates a version 1 time-based UUID
  4. uuid.NewSHA1 generates deterministic RFC 4122 v5 UUIDs from namespace and name
  5. uuid.Parse parses a valid UUID string and returns error for invalid string
  6. uuid.Validate validates valid UUID string format and rejects invalid formats
  7. uuid.MustParse returns UUID on valid string and panics on invalid string
  8. uuid.NullUUID handles valid and null UUID values with SQL driver and JSON serialization

Files

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

Download the source artifact (tar.gz)

Origin Seeder

anonymous