My question pertains to the following section in the guidelines about cryptocurrencies.
3.1.5 (b) Cryptocurrencies:
(iii) Exchanges: Apps may facilitate transactions or transmissions of cryptocurrency on an approved exchange, provided they are offered by the exchange itself.
If my app makes a call to a smart contract that in turns facilitates a swap using Uniswap, will that be acceptable? Or more simply, if the smart contract does something related to ERC20 token swap, will that be usable by our application at all?