Handshake

Three sockets. Every maker uses them. The venue keeps its matching engine.

1. Directory — catalog of designated markets. Makerbook pulls books from here.
2. Authport — how a desk is let in. OAuth or API key.
3. Router — drop-copy fills to the venue engine and the reward pool.

Domain proof

Serve a one-line token at /.well-known/opfico-domain.txt, then an API map at /.well-known/opfico-api.json. Factory issues the token when Handshake starts.

opfico-site-verification=<token>

{
  "standard": "opfico-directory",
  "token": "opfico-api-verification=<token>",
  "origin": "https://your.venue",
  "venue": "your-id"
}