CodeSampleX

Sample

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

sha256:1e442e3a2d9b24ace8645058e396bb963c5fc6414ce33d6796a4c47aed00a135

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
verify pkg:golang/github.com/google/uuid@v1.6.0
Packages
Symbols
  • uuid.NewString
  • uuid.MustParse
  • uuid.Validate
  • uuid.UUID.URN
Created
2026-08-19T05:35:13Z

Contract

  1. uuid.NewString returns a valid 36-character RFC4122 version 4 UUID string
  2. uuid.Validate confirms validity of uuid.NewString generated strings
  3. uuid.Validate returns an error for invalid UUID strings
  4. uuid.MustParse returns parsed UUID for valid input without panic
  5. uuid.UUID URN formats UUID into standard urn:uuid prefix format

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