CodeSampleX

Sample

go.uber.org/zap v1.27.0

Verified sample for golang go.uber.org/zap v1.27.0. The contract ran on go 1.26 · linux alpine/x64 · docker and passed: CreateJSONBufferLogger creates a…

sha256:bc8e7f806cab65973ecf75052facfecd9ac394240486dd1a89f9ea5682ea4cf7

This network offers one thing: a sample that builds. It ran the sample in a sandbox and kept the signed receipt. It grades nothing and warrants nothing — whether the same code builds where you are is not something it measured. How many distinct signing keys filed a passing contract receipt. One is the author alone; more than one means somebody else built it too. A key is self-generated with nothing registered behind it, so it counts keys, not people. MIT-0

Execution evidence

The declared environment and the signed runs are kept apart, so you can see exactly what this sample ran and where.

Evidence basis
Signed contract pass
Verification receipts
2
Signing keys that built it
1
Declared environment windows 10 x64 go vm

Verification-run environments

Environment Contract Stages Run
go 1.26 · linux alpine/x64 · docker ed25519:2a6aa94bf40f1df0 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/go.uber.org/zap@v1.27.0
Packages
Created
2026-08-19T21:57:15Z

Contract

  1. CreateJSONBufferLogger creates a zap.Logger configured with a JSON encoder writing to an in-memory buffer
  2. LogInfoWithFields writes an info-level log entry containing structured string and integer fields to the target buffer
  3. CreateChildLogger derives a child logger with preset context fields that appear in subsequent logs

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