CodeSampleX

Sample

verify dns.Msg.SetEdns0 in pkg:golang/github.com/miekg/dns@v1.1.48

sha256:9b1f7f1429811ee61345d3f11b0647657adc58c49b3aef47ed946ff57af4c8d5

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 1.26 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…
2026-08-27

Case

HOW
Goal
verify dns.Msg.SetEdns0 in pkg:golang/github.com/miekg/dns@v1.1.48
Packages
Symbols
  • dns.Msg.SetEdns0
  • dns.OPT
Created
2026-08-27T21:11:31Z

Contract

  1. dns.Msg.SetEdns0 initializes OPT pseudo-RR with specified UDP buffer size and DO flag
  2. dns.Msg.IsEdns0 retrieves pointer to OPT resource record from message extra section
  3. dns.OPT supports configuring and extracting EDNS0 Client Subnet option with IPv4 and IPv6
  4. dns.Msg.Pack and Unpack preserve EDNS0 OPT record and subnet options across wire serialization

Files

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

Download the source artifact (tar.gz)

Origin Seeder

anonymous