CodeSampleX

Sample

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

sha256:1eaf42d34e79e3cde044dd9e5eee3527e6826327351850b9466324f30f2d2659

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.MustParse
  • github.com/google/uuid.Must
Created
2026-08-18T20:45:14Z

Contract

  1. uuid.MustParse parses standard hyphenated UUID strings without error
  2. uuid.MustParse parses UUID strings without hyphens and URN prefixed UUIDs
  3. uuid.MustParse produces the identical UUID as uuid.Parse
  4. uuid.MustParse panics on invalid UUID strings
  5. uuid.Must returns the UUID value when err is nil and panics on error

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