CodeSampleX

Sample

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

sha256:f00ddfa2eb3c4c8a81826071896109f2ec80e11b539e6004f26fd33555bad8dd

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.Validate
  • uuid.Parse
  • uuid.ParseBytes
  • uuid.MustParse
  • uuid.FromBytes
  • uuid.UUID.URN
Created
2026-08-19T05:48:12Z

Contract

  1. uuid.NewRandom returns a valid RFC 4122 version 4 UUID with nil error
  2. uuid.Validate validates canonical 36-character UUID string and returns error for invalid format
  3. uuid.Parse decodes valid UUID string into 16-byte UUID struct
  4. uuid.ParseBytes parses valid 36-byte slice into matching UUID
  5. uuid.MustParse parses valid UUID string without error and panics on invalid input
  6. uuid.FromBytes converts 16-byte slice to UUID and rejects slices not equal to 16 bytes
  7. 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