Quick question: If i want to deposit USDT, is it using OMNI or ETH as a transport layer? I'm asking because i want to send some USDT from Bitfinex to Kraken. For OMNI the fee is 20 USD, for ETH only 3 USD. On Bitfinex's site i can choose which one to use but i don't want my money to disappear if Kraken only supports OMNI.