CodeSampleX

Sample

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

sha256:f330c1629569fb8281e6b7a297a4c51493662c6fd47cf03cbb3829b7a35594b6

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.NewRandom
  • uuid.NewString
  • uuid.Validate
  • uuid.MustParse
  • uuid.FromBytes
Created
2026-08-19T05:54:14Z

Contract

  1. uuid.NewRandom generates a valid RFC 4122 Version 4 UUID with nil error
  2. uuid.NewString generates a 36-character canonical lowercase UUID string
  3. uuid.Validate returns nil for valid UUID strings and error for invalid strings
  4. uuid.MustParse parses valid UUID strings and panics on invalid UUID format
  5. uuid.FromBytes creates a UUID from a 16-byte slice and returns error for invalid lengths

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