CodeSampleX

Sample

verify pkg:golang/github.com/klauspost/cpuid/v2@v2.2.10

sha256:9cbf1bb03d7d7a36590206783f4a6ad1ecbb67ec10b025f8b824fb2b86519b3e

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
1
Signing keys that built it
1
Declared environment go 1.26 linux 24 · ubuntu · glibc 2.39 x64 go 1.26 go go 1

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@1golang:1.26-alpine@sha256:28d89ee9cc0f…
2026-08-23

Case

HOW
Goal
verify pkg:golang/github.com/klauspost/cpuid/v2@v2.2.10
Packages
Environment
go 1.26.6
Created
2026-08-23T17:14:49Z

Contract

  1. cpuid.CPU provides CPU architecture, vendor information, cache line size, and core topology
  2. cpuid.ParseFeature parses string feature names and returns UNKNOWN for unrecognized names
  3. cpuid.CombineFeatures combines multiple FeatureID values into a flag set checked with cpuid.CPU.HasAll
  4. cpuid.CPUInfo instances support Enable, Disable, and Has for modifying and testing individual features
  5. cpuid.CPUInfo.Supports and cpuid.CPUInfo.AnyOf evaluate presence of multiple hardware feature flags
  6. cpuid.CPUInfo.FeatureSet returns a slice of string names for all enabled CPU features

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