If you open the miniapp the first text on the page explains what the product does and directly answers your question.

Ohhh now it makes sense …one QR code, but the winning bidder decides where it leads each day. That’s actually genius. I didn’t catch that at first, thought it was just another NFT or token thing. @qrcoindotfun  is different, like owning a piece of daily attention. Super cool concept, never seen anything like it before

$QR: 0x2b5050F01d64FBb3e4Ac44dc07f0732BFb5ecadF

/scribble inminiapp scribbling and nft minting

I was thinking the same thing.. it would be so cool to have it show up randomly online or even in real life. Imagine people scanning it without knowing it changes every single day and they get to claim the qr rewards as well @qrcoindotfun

its cool stuff i wonder where the qr code is besides on the website