CodeSampleX

Sample

github.com/mitchellh/copystructure v1.2.0

Verified sample for golang github.com/mitchellh/copystructure v1.2.0. The contract ran on go 1.26 · linux alpine/x64 · docker and passed: copystructure.Copy…

sha256:5560401b6c1ca78ccbe5573dcda4d93664c339c7a9099cbba190506549a15aa7

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 · ubuntu · glibc 2.39 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@1
2026-08-21

Case

HOW
Goal
verify pkg:golang/github.com/mitchellh/copystructure@v1.2.0
Packages
Created
2026-08-21T00:26:02Z

Contract

  1. copystructure.Copy deeply duplicates nested structs, maps, slices, and pointers without sharing state
  2. copystructure.Must unwraps the copied value directly and panics on unsupported errors
  3. copystructure respects struct tags for ignored fields and shallow copied references
  4. copystructure.Config with custom CopierFunc overrides default deep copying behavior

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