CodeSampleX

Sample

github.com/aryann/difflib v0.0.0-20210328193216-ff5ff6dc229b: Diff

Verified sample for golang github.com/aryann/difflib v0.0.0-20210328193216-ff5ff6dc229b: Diff. The contract ran on go 1.26 · linux alpine/x64 · docker and…

sha256:eba0443e09cf7d39445aee7321e0fa10e9bf8ec95cc1b2c88255ce829b0f3d51

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 github.com/aryann/difflib.Diff in pkg:golang/github.com/aryann/difflib@v0.0.0-20210328193216-ff5ff6dc229b
Packages
Symbols
  • github.com/aryann/difflib.Diff
Created
2026-08-21T02:25:01Z

Contract

  1. difflib.Diff returns empty result for empty inputs
  2. difflib.Diff marks identical sequences with Common delta
  3. difflib.Diff detects deletions as LeftOnly
  4. difflib.Diff detects additions as RightOnly
  5. difflib.Diff computes mixed differences preserving sequence order
  6. DiffRecord formats as string representation

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