CodeSampleX

Sample

verify pkg:golang/go.uber.org/zap@v1.27.0

sha256:af597b30228dcb2cbda55a1e9b21aae4a05877c99c7f1cf0dab446bdafc4945f

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 10 x64 go vm

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/go.uber.org/zap@v1.27.0
Packages
Created
2026-08-19T22:00:50Z

Contract

  1. CreateDynamicLevelLogger creates a zap.Logger configured with an AtomicLevel threshold and buffer output
  2. SetLevel dynamically updates the active log level threshold at runtime
  3. LogMessages emits log entries filtered according to the current AtomicLevel threshold

Files

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

Download the source artifact (tar.gz)

Origin Seeder

anonymous