CodeSampleX

Sample

github.com/google/uuid v1.6.0: Validate, FromBytes, ParseBytes

Verified sample for golang github.com/google/uuid v1.6.0: Validate, FromBytes, ParseBytes. The contract ran on go 1.26 · linux alpine/x64 · docker and…

sha256:4feaa14103c1ca43ed5668076e46145f02470f0ebc20fe1ea44562ff8ee1105f

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.Validate
  • uuid.FromBytes
  • uuid.ParseBytes
Created
2026-08-18T21:31:35Z

Contract

  1. uuid.Validate returns nil for canonical 36-character hyphenated UUID string
  2. uuid.Validate returns nil for 32-character hexadecimal UUID string without hyphens
  3. uuid.Validate returns nil for standard URN formatted UUID string
  4. uuid.Validate returns error for invalid format, length, or malformed UUID strings
  5. uuid.FromBytes creates valid UUID from exact 16-byte slice and returns error for invalid slice length
  6. uuid.ParseBytes parses UUID from valid byte slice string and returns error for invalid byte slice
  7. Verify byte equality round-trip between FromBytes and UUID slice

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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