CodeSampleX

Sample

verify pkg:golang/google.golang.org/protobuf@v1.36.10

sha256:64033169c3d30e8767aae8f27c05e8baa768a9179ee56a8c040fd03e046ca077

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
2026-08-19
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/google.golang.org/protobuf@v1.36.10
Packages
Created
2026-08-19T19:31:00Z

Contract

  1. proto.MarshalOptions with Deterministic flag produces identical wire-format byte sequences
  2. proto.UnmarshalOptions with DiscardUnknown silently discards unrecognized field tags during unmarshaling
  3. proto.CheckInitialized validates whether required proto fields or messages are initialized
  4. protojson.MarshalOptions with EmitUnpopulated and UseProtoNames exports default values using proto field names
  5. protoreflect Message Range and descriptor inspection enables dynamic field iteration and validation
  6. wrapperspb and emptypb provide standard boxed primitive values and empty signal messages

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