CodeSampleX

Sample

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

sha256:58ceb6aa09aa25f8e92ed454787ae87907e1c87364ace16e7e04be09b1111712

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.FromBytes
Created
2026-08-18T20:33:49Z

Contract

  1. uuid.FromBytes converts valid 16-byte slice into UUID
  2. uuid.FromBytes returns matching UUID equal to original bytes
  3. uuid.FromBytes returns error when byte slice length is less than 16
  4. uuid.FromBytes returns error when byte slice length is greater than 16
  5. uuid.FromBytes returns error when byte slice is nil or empty

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