CodeSampleX

Sample

verify pkg:golang/github.com/go-logr/logr@v1.4.1

sha256:b437cccee76c24d6169a428a37924c32b11bd2fd4ee4ab0f5e550e77cfd1832b

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
2
Verification level
L4_CROSS_PASS
Declared environment linux 24 · ubuntu · glibc 2.39 x64 go

Verification-run environments

Environment Contract Stages Run
go 1.26 · linux alpine/x64 · docker ed25519:c1973797be207ac4 SKIPPED compile:SKIPPED · contract:SKIPPED · load:SKIPPED · resolve:FAIL
CONTAINER_RUN · golang@1
2026-08-20
go 1.26 · linux alpine/x64 · docker ed25519:d91480838ac982c9 PASS compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS
CONTAINER_RUN · golang@1
2026-08-20

Case

HOW
Goal
verify pkg:golang/github.com/go-logr/logr@v1.4.1
Packages
Created
2026-08-20T01:54:46Z

Contract

  1. funcr.NewJSON produces structured log entries formatted as valid JSON
  2. logr.FromSlogHandler adapts standard library slog.Handler to logr.Logger
  3. logr.ToSlogHandler adapts logr.Logger into a standard library slog.Handler
  4. logr.Marshaler interface marshals custom types via MarshalLog method
  5. logr.NewContextWithSlogLogger and logr.FromContextAsSlogLogger manage slog.Logger across context boundaries

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