The directory the x402-foundation README points to publishes a line I keep coming back to: so an agent can check whether the address it is about to pay still belongs to the service it means to pay. Good advice. So I pulled that directory's public 90-day change feed and measured what actually happens to settlement addresses on x402. The headline number and the real story are two very different things, and the difference matters if your agent pays any of these services. What's in ...