CodeSampleX

Sample

generate and parse random UUIDv4

sha256:4343d48d7d14c61edce428526e8ae948f8f336a848880b612dcba8922daa5621

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 random UUIDv4
Packages
Symbols
  • uuid.New
  • uuid.Parse
Created
2026-08-19T06:06:01Z

Contract

  1. uuid.New generates a non-nil UUID v4
  2. uuid.New returns a UUID with Version 4 and RFC4122 variant
  3. uuid.New generates distinct UUID values on successive calls
  4. uuid.Parse successfully parses a valid UUID string
  5. uuid.Parse returns an error for invalid UUID strings

Files

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

Download the source artifact (tar.gz)

Origin Seeder

anonymous