CodeSampleX

Sample

github.com/google/uuid v1.6.0: MarshalBinary, UnmarshalBinary

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

sha256:e1363fc973565db6033a4a327185b1f028680fd904648425c72e6f18efe71d96

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 go 1.26 windows 11 x64 go 1.26 go go 1

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
  • github.com/google/uuid.MarshalBinary
  • github.com/google/uuid.UnmarshalBinary
Environment
go 1.26.5
Created
2026-08-18T22:44:28Z

Contract

  1. uuid.MarshalBinary encodes UUID into 16-byte raw slice without error
  2. uuid.MarshalBinary encodes uuid.Nil into 16 zero bytes
  3. uuid.UnmarshalBinary decodes 16-byte binary data into UUID
  4. uuid.UnmarshalBinary decodes 16 zero bytes into uuid.Nil
  5. uuid.UnmarshalBinary rejects byte slices with length other than 16 with error
  6. uuid.MarshalBinary and uuid.UnmarshalBinary round-trip accurately preserves UUID value

Files

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

Download the source artifact (tar.gz)

Origin Seeder

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