If you've heard about QRcoin.fun in the Farcaster ecosystem, the information you found was probably a little confusing. Unlike a traditional platform, QRcoin is not a website full of menus and features. It is, in essence, a bold experiment in on-chain advertising that works through a single, permanent QR code.What is QRcoin.fun and how does it work?Essentially, QRcoin.fun is a project that uses a single immutable QR code as its main advertising asset. This QR code has the ability to change it...