CodeSampleX

Sample

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

sha256:a92c557041ac47d3fa7b63139a05cc8a7fe16b48780607fa58fc6c32af4b744e

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.NewRandomFromReader
  • uuid.FromBytes
  • uuid.UUID.Version
  • uuid.UUID.Variant
Created
2026-08-19T03:01:21Z

Contract

  1. uuid.NewRandom returns a non-nil 16-byte RFC4122 version 4 UUID with nil error
  2. uuid.NewRandomFromReader generates version 4 RFC4122 UUID using provided byte source
  3. uuid.FromBytes decodes a valid 16-byte slice into matching UUID
  4. uuid.FromBytes returns error for slice length not equal to 16 bytes
  5. uuid.UUID Version returns version 4 for random UUID
  6. uuid.UUID Variant returns RFC4122 for standard generated UUID

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