CodeSampleX

Sample

compress and decompress data using zstd encoder and decoder

sha256:c439c72601669580351dd4a1ea52fb84f8ff15d360fdbec271c8b3deb796c382

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…		 2026-08-23

Case

HOW
Goal
compress and decompress data using zstd encoder and decoder
Packages
Symbols
  • zstd.NewReader
  • zstd.NewWriter
Environment
go 1.26.6
Created
2026-08-23T17:13:22Z

Contract

  1. zstd.NewWriter compresses data stream and flushes successfully
  2. zstd.NewReader decompresses data stream and restores exact original payload
  3. compress and decompress roundtrips empty input payload without error

Files

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

Download the source artifact (tar.gz)

Origin Seeder

anonymous