CodeSampleX

Sample

parse UUID from byte slices using github.com/google/uuid.ParseBytes

sha256:999f5cd014fa4bf885f681c4f797c4a7b907a1521f8ba897e77a8c046e2e1b62

Publication state. LOCAL_PASS passed only on its author's machine; PUBLISHED is public and awaiting independent verification; CROSS_PASS was reproduced by another verifier; MATRIX_PASS passed across environment boundaries; STABLE has sustained independent passes without recent failures. Evidence strength. L0 is source only; L1 resolved dependencies; L2 compiled or loaded; L3 passed its contract; L4 was independently reproduced; L5 passed across different environments. MIT-0

Execution evidence

Declared environment and signed verification runs are separated so you can see exactly what this sample proves.

Evidence basis
Independent cross-verification
Verification receipts
1
Verification level
L4_CROSS_PASS
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
parse UUID from byte slices using github.com/google/uuid.ParseBytes
Packages
Symbols
  • ParseBytes
Created
2026-08-19T00:35:43Z

Contract

  1. uuid.ParseBytes parses standard 36-character hyphenated UUID byte slices into valid UUID
  2. uuid.ParseBytes parses 32-character hexadecimal UUID byte slices without hyphens
  3. uuid.ParseBytes parses URN and bracketed UUID byte slice formats
  4. uuid.ParseBytes returns an error for invalid length or malformed byte slices
  5. uuid.ParseBytes correctly parses nil UUID byte slice to uuid.Nil

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