CodeSampleX

Sample

verify pkg:golang/github.com/klauspost/cpuid/v2@v2.3.0

sha256:894529222320760e3f7985e1ba2f18e450436b695724de48b07022a954666169

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 linux 24 · ubuntu · glibc 2.39 x64 go go 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@1golang:1.26-alpine@sha256:28d89ee9cc0f…
2026-08-27

Case

HOW
Goal
verify pkg:golang/github.com/klauspost/cpuid/v2@v2.3.0
Packages
Symbols
  • cpuid.CPU
  • cpuid.Detect
  • cpuid.FeatureID
  • cpuid.Flags
Environment
go
Created
2026-08-27T21:08:22Z

Contract

  1. cpuid.Flags registers command-line flags including cpu.arm, cpu.disable, and cpu.features for runtime CPU feature configuration.
  2. cpuid.CPU is an exported global CPUInfo struct initialized at startup providing non-negative physical and logical core counts and vendor metadata.
  3. cpuid.FeatureID represents hardware CPU features, providing String representation, ParseFeature lookup, and UNKNOWN for unrecognized strings.
  4. cpuid.Detect re-evaluates hardware CPU features, resetting any dynamically modified flags on the global cpuid.CPU instance.
  5. cpuid.CPU.Supports returns true if all specified feature IDs are supported (vacuously true for zero args), and cpuid.CPU.AnyOf returns true if at least one is supported.

Files

  • NOTES.md
  • PROMPT.md
  • cpuid_test.go
  • csx.json
  • go.mod
  • go.sum
  • spec.json

Download the source artifact (tar.gz)

Origin Seeder

anonymous