Q: Will there be one big Cashu mint that everybody uses?

A: No. Many websites, services, exchanges, wallets, mining pools, financial applications are going to run their own mints and offer vastly improved versions of their already existing products and they will develop new services enabled by the properties of ecash. We're building the infrastructure for that based on an open protocol.

Every balance in every app that isn't non-custodial Bitcoin should be ecash.