Deribit has just launched a Swap Service allowing easy, fast and cheap conversion of collateral (BTC or ETH). The solution enables the user to convert BTC into ETH (or vice versa) at competitive rates with a single click. Conversion can be done inhouse as of now and no longer requires an external platform.
The solution is only available in our Pro UI and can be found in the left menu. The resulting cash flows of executed swaps can be found in the transaction log of the particular coin.
Swap Service, Link.
More background on the model can be found here (Link).