Instead of using ethereum peg maybe you should consider using some Bitcoin Sidechains that are also using stable coins.
We're developing the contract in Solidity. That makes it compatible with Ethereum, BSC, but also RSK.
So you are saying there is no middle man when using your Bitcoin dex for atomic swaps?
You are right. No third party is required to execute a swap. The client is only doing the client-side validation of the token protocol for you and compiles your token transactions. In theory, you could do that in e.g. Electrum, too.
If you're curious about the details, here's a writeup on swaps.