Sample
verify github.com/caddyserver/certmagic.SubjectIsInternal in pkg:golang/github.com/caddyserver/certmagic@v0.23.0
sha256:ebfb000352432b676dbf291a176fa3f6a7612754b7b38c28885a313b0fd7ad7f
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… |
2026-08-28 |
Case
HOW- Goal
- verify github.com/caddyserver/certmagic.SubjectIsInternal in pkg:golang/github.com/caddyserver/certmagic@v0.23.0
- Symbols
-
- github.com/caddyserver/certmagic.SubjectIsInternal
- Created
- 2026-08-28T02:53:45Z
Contract
- certmagic.SubjectIsInternal returns true for localhost, subdomains of .localhost, and case-insensitive/trailing-dot variations with or without ports
- certmagic.SubjectIsInternal returns true for internal domain suffixes (.local, .internal, .home.arpa)
- certmagic.SubjectIsInternal returns true for private, loopback, and link-local IPv4 addresses (127.0.0.1, 10.0.0.1, 172.16.0.1, 192.168.1.1, 169.254.1.1) including host:port pairs
- certmagic.SubjectIsInternal returns true for loopback, link-local, and unique-local IPv6 addresses (::1, fe80::1, fc00::1, fd00::1) including bracketed host:port pairs
- certmagic.SubjectIsInternal returns false for public domain names, wildcard domains, and non-internal TLDs
- certmagic.SubjectIsInternal returns false for public IPv4/IPv6 addresses and boundary IPs outside private ranges
- certmagic.SubjectIsInternal returns false for empty strings and whitespace without panicking
Files
- PROMPT.md
- csx.json
- go.mod
- go.sum
- main.go
- spec.json
- test/contract.go
Origin Seeder
anonymous