CodeSampleX

Sample

verify pkg:golang/github.com/vishvananda/netlink@v1.1.0

sha256:de0537148b0ea4c1ea03e8e5ea958c1767204e98f8146b72b450dbe42a0cfd25

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@1golang:1.26-alpine@sha256:28d89ee9cc0f…
2026-08-27

Case

HOW
Goal
verify pkg:golang/github.com/vishvananda/netlink@v1.1.0
Packages
Symbols
  • netlink.AddrList
  • netlink.LinkByName
  • netlink.LinkList
  • netlink.ParseAddr
Created
2026-08-27T15:14:07Z

Contract

  1. netlink.LinkByName("lo") returns loopback Link with Name="lo"
  2. netlink.LinkByName returns non-nil error when link does not exist
  3. netlink.ParseAddr parses IPv4 CIDR string into Addr with correct IP and mask size
  4. netlink.ParseAddr parses IPv6 CIDR string into Addr with correct IP and mask size
  5. netlink.ParseAddr returns non-nil error for invalid CIDR string
  6. netlink.AddrList on loopback Link returns IPv4 address 127.0.0.1
  7. netlink.AddrList with FAMILY_ALL returns all configured loopback addresses
  8. netlink.LinkList returns non-empty slice of network Links including loopback

Files

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

Download the source artifact (tar.gz)

Origin Seeder

anonymous