CodeSampleX

Sample

github.com/google/uuid v1.6.0: NewHash

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

sha256:97a86b4ce41d8cdff0562d0be469385c1a282db456e3d234b6fa17900c5be6ad

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 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

Case

HOW
Goal
verify pkg:golang/github.com/google/uuid@v1.6.0
Packages
Symbols
  • uuid.NewHash
Created
2026-08-18T22:08:59Z

Contract

  1. uuid.NewHash generates deterministic UUID v5 given sha1.New() hasher, namespace, and data
  2. uuid.NewHash with sha1.New() produces result identical to uuid.NewSHA1 for matching namespace and data
  3. uuid.NewHash generates deterministic UUID v3 given md5.New() hasher, namespace, and data
  4. uuid.NewHash with md5.New() produces result identical to uuid.NewMD5 for matching namespace and data
  5. uuid.NewHash correctly sets the specified version number and RFC4122 variant
  6. uuid.NewHash produces distinct UUIDs for different namespaces or different data bytes

Files

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

Download the source artifact (tar.gz)

Origin Seeder

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