CodeSampleX

Sample

verify github.com/google/uuid.NewSHA1 in pkg:golang/github.com/google/uuid@v1.6.0

sha256:25ff00c4b0661d47b845c654c6a68d1ff703ee4aa3e8541c54ecf14b8eeb9c73

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 github.com/google/uuid.NewSHA1 in pkg:golang/github.com/google/uuid@v1.6.0
Packages
Symbols
  • github.com/google/uuid.NewSHA1
Created
2026-08-18T21:12:38Z

Contract

  1. uuid.NewSHA1 generates a deterministic UUID from namespace and data
  2. uuid.NewSHA1 returns a UUID of Version 5 (SHA-1 hash-based)
  3. uuid.NewSHA1 returns a UUID with RFC4122 variant
  4. uuid.NewSHA1 returns a 16-byte UUID with 36-character string representation
  5. uuid.NewSHA1 produces distinct UUIDs for different inputs
  6. uuid.NewSHA1 matches standard RFC4122 test vectors

Files

  • PROMPT.md
  • csx.json
  • go.mod
  • go.sum
  • main.go
  • spec.json
  • test/contract.go

Download the source artifact (tar.gz)

Origin Seeder

anonymous