CodeSampleX

Sample

verify github.com/klauspost/compress/zstd.NewReader in pkg:golang/github.com/klauspost/compress@v1.18.0

sha256:3484196f2fa307043840c074a6ffb9c034fe9bffb2bd12ffd4dd48c502bbf936

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 amd64 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…
2026-08-26

Case

HOW
Goal
verify github.com/klauspost/compress/zstd.NewReader in pkg:golang/github.com/klauspost/compress@v1.18.0
Packages
Symbols
  • github.com/klauspost/compress/zstd.NewReader
Environment
go 1.26.6
Created
2026-08-26T12:18:42Z

Contract

  1. zstd.NewReader decompresses valid zstd stream and restores exact original payload
  2. zstd.NewReader decompresses empty stream payload correctly
  3. zstd.NewReader returns error when reading invalid or corrupted stream
  4. zstd.NewReader supports concurrent decoder options and stream resetting

Files

  • PROMPT.md
  • contract_test.go
  • csx.json
  • go.mod
  • go.sum
  • reader.go
  • spec.json

Download the source artifact (tar.gz)

Origin Seeder

anonymous