CodeSampleX

Sample

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

sha256:748617dcc9fb4fd2d010b37a46a46ba056067e78e69c15db33f9e43b7711d8c0

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.NewString in pkg:golang/github.com/google/uuid@v1.6.0
Packages
Symbols
  • github.com/google/uuid.NewString
Created
2026-08-18T20:54:38Z

Contract

  1. uuid.NewString returns a 36-character string representation of a random UUID
  2. uuid.NewString generates valid version 4 UUIDs with RFC4122 variant
  3. uuid.NewString generates unique strings across multiple calls

Files

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

Download the source artifact (tar.gz)

Origin Seeder

anonymous