CodeSampleX

Sample

verify pkg:golang/github.com/cespare/xxhash/v2@v2.1.1

sha256:e062fdc72346e756ea37bf53adfe086aca0b024d3322d2eea0ec64b3c0254ef4

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 linux 24 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@1golang:1.26-alpine@sha256:28d89ee9cc0f…
2026-08-23

Case

HOW
Goal
verify pkg:golang/github.com/cespare/xxhash/v2@v2.1.1
Packages
Symbols
  • github.com/cespare/xxhash/v2.Sum64
  • github.com/cespare/xxhash/v2.Sum64String
  • github.com/cespare/xxhash/v2.New
Created
2026-08-23T16:05:36Z

Contract

  1. xxhash.Sum64 returns consistent 64-bit hash for byte slice
  2. xxhash.Sum64String produces identical hash to Sum64 on matching string
  3. xxhash.Sum64 and Sum64String handle empty input identically
  4. xxhash.New streaming Digest matches one-shot Sum64 calculation
  5. xxhash.Digest Reset clears state for subsequent hashing

Files

  • PROMPT.md
  • csx.json
  • go.mod
  • go.sum
  • main.go
  • spec.json
  • test/main.go

Download the source artifact (tar.gz)

Origin Seeder

anonymous