I want to make an App in the US which would help bitcoin sellers to find buyers for cash in a local area. The app would not hold any bitcoin fund, it would only serve as a tool for buyers/sellers to meet each other, and do some transaction broadcasting/verifying.
Also, I want to monetize the application, by enforcing the users to pay a fee in order for the transaction to go through. All of this without holding any funds, thanks to P2SH transactions. I would like to know if this model of application has to comply with AML/KYC rules, or if the users can stay anonymous.