CodeSampleX

Sample

verify github.com/google/uuid.Parse in pkg:golang/github.com/google/uuid@v1.6.0

sha256:5c9fc390cb4839f923779da529f1204cd4a97802746bc1c4c75516212043d466

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 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 github.com/google/uuid.Parse in pkg:golang/github.com/google/uuid@v1.6.0
Packages
Symbols
  • github.com/google/uuid.Parse
Environment
go 1.26.5
Created
2026-08-18T23:23:40Z

Contract

  1. uuid.Parse parses standard 36-byte hyphenated UUID strings
  2. uuid.Parse parses 32-byte hexadecimal UUID strings without hyphens
  3. uuid.Parse parses 45-byte URN-prefixed UUID strings
  4. uuid.Parse parses 38-byte braced UUID strings
  5. uuid.Parse returns correct UUID version and RFC4122 variant
  6. uuid.Parse returns an error for 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