CodeSampleX

Sample

Generate and parse version 4 UUID

sha256:9193e6dbb646fd52bb6e30a3c1916d9370e91ac216cd59c3f89e509e64ca347f

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
Generate and parse version 4 UUID
Packages
Symbols
  • NewRandom
  • Parse
Created
2026-08-19T06:39:23Z

Contract

  1. uuid.NewRandom generates a valid version 4 UUID with RFC4122 variant
  2. uuid.Parse parses valid canonical UUID string into UUID value
  3. uuid.Parse returns error on invalid UUID strings

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