ASGI is the interface powering async Python — the spiritual successor to WSGI, handling both sync and async for high-concurrency apps. .asgi is the namespace for the servers, frameworks, and tooling built on it.
Own the entire .asgi namespace. SLD registration returns at a later date.
Handshake is a decentralized, permissionless naming protocol — there's no ICANN, no registrar middlemen. Your SLD is truly yours.