CodeSampleX

Sample

github.com/google/uuid v1.6.0: Convert raw byte slices, parse formatted byte sequences, and marshal binary/text representations with uuid.FromBytes, uuid.Must, uuid.ParseBytes, and uuid.MarshalBinary in google/uuid

Verified sample for golang github.com/google/uuid v1.6.0: Convert raw byte slices, parse formatted byte sequences, and marshal binary/text representations…

sha256:263ff5e099274144065a3770758e5789c1847324fc904738d3dc8ab4a5d53582

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
Convert raw byte slices, parse formatted byte sequences, and marshal binary/text representations with uuid.FromBytes, uuid.Must, uuid.ParseBytes, and uuid.MarshalBinary in google/uuid
Packages
Symbols
  • uuid.FromBytes
  • uuid.Must
  • uuid.ParseBytes
  • uuid.UUID.MarshalBinary
  • uuid.UUID.MarshalText
  • uuid.UUID.UnmarshalBinary
  • uuid.UUID.UnmarshalText
Created
2026-08-18T19:22:15Z

Contract

  1. assert FromBytes creates valid UUID from 16-byte slice and returns error on invalid length
  2. assert Must returns UUID when err is nil and panics when err is non-nil
  3. assert ParseBytes parses formatted byte slices and rejects invalid byte sequences
  4. assert MarshalBinary produces 16-byte raw slice and UnmarshalBinary restores original UUID or returns error on invalid length
  5. assert MarshalText produces canonical 36-byte ASCII representation and UnmarshalText parses text into UUID

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