CodeSampleX

Sample

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

sha256:883641daa1e0938b57dc32b188ec20de0e9708d35ff1b0500328cf51ba566b70

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 gomod

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 pkg:golang/github.com/google/uuid@v1.6.0
Packages
Symbols
  • uuid.NewRandom
  • uuid.NewString
  • uuid.Parse
  • uuid.Validate
  • uuid.Nil
  • UUID.Version
  • UUID.Variant
Environment
go 1.26
Created
2026-08-18T22:15:18Z

Contract

  1. assert uuid.NewRandom generates a valid non-nil RFC4122 version 4 UUID
  2. assert uuid.NewString generates a valid 36-character UUID string
  3. assert uuid.Parse parses a valid UUID string and matches the original
  4. assert uuid.Validate returns an error for invalid UUID strings
  5. assert uuid.Nil matches the standard zero UUID string

Files

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

Download the source artifact (tar.gz)

Origin Seeder

anonymous