CodeSampleX

Sample

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

sha256:a88430b3eb5e9397db62160c8d9086b3613e9238456a1220aafc9e689a077948

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
  • github.com/google/uuid.NewRandom
  • github.com/google/uuid.Parse
  • github.com/google/uuid.MustParse
  • github.com/google/uuid.NewString
Created
2026-08-19T10:50:24Z

Contract

  1. uuid.NewRandom generates a non-nil 16-byte RFC 4122 Version 4 UUID without error
  2. uuid.NewRandom string representation matches RFC 4122 format
  3. uuid.NewRandom produces distinct UUIDs across consecutive invocations
  4. uuid.Parse successfully parses a valid UUID string into an identical UUID
  5. uuid.Parse returns error for invalid or malformed UUID strings
  6. uuid.MustParse parses valid UUID string without panicking
  7. uuid.MustParse panics on invalid UUID string
  8. uuid.NewString generates a valid 36-character UUID v4 string

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