CodeSampleX

Sample

parse UUID string or panic using github.com/google/uuid.MustParse

sha256:50412f68eb35525fb1e3545e51a7a17f746a0488d6bab8e0fd109b19cacd5a9d

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 string or panic using github.com/google/uuid.MustParse
Packages
Symbols
  • github.com/google/uuid.MustParse
Created
2026-08-19T00:38:28Z

Contract

  1. uuid.MustParse parses standard 36-character hyphenated UUID strings without panic
  2. uuid.MustParse parses 32-character hex, URN, and bracketed UUID strings without panic
  3. uuid.MustParse panics on invalid UUID string format
  4. uuid.MustParse parses nil UUID string to uuid.Nil

Files

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

Download the source artifact (tar.gz)

Origin Seeder

anonymous