CodeSampleX

Sample

verify github.com/golang/protobuf/jsonpb.Marshaler in pkg:golang/github.com/golang/protobuf@v1.3.1

sha256:ccbfd59e2c901f32aa435161437b17b55f5d60b5b1471ed343f11a86d9eb1be1

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 linux 24 · ubuntu · glibc 2.39 x64 go

Verification-run environments

Environment Contract Stages Run
go 1.26 · linux alpine/x64 · docker ed25519:c1973797be207ac4 PASS compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS
CONTAINER_RUN · golang@1
2026-08-21

Case

HOW
Goal
verify github.com/golang/protobuf/jsonpb.Marshaler in pkg:golang/github.com/golang/protobuf@v1.3.1
Packages
Symbols
  • github.com/golang/protobuf/jsonpb.Marshaler
Created
2026-08-21T01:43:21Z

Contract

  1. jsonpb.Marshaler.Marshal serializes protobuf messages to an io.Writer in JSON format
  2. jsonpb.Marshaler.MarshalToString serializes protobuf messages directly to a JSON string
  3. jsonpb.Marshaler with Indent formats JSON output with line breaks and indentation
  4. jsonpb.Marshaler with EmitDefaults includes default zero-value fields in serialized JSON
  5. jsonpb.Marshaler serializes structured and list protobuf message types

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