USDT has had massive adoption on multiple blockchains including Bitcoin, Ethereum, Tron and many more… However, USDT can accredit most of its success to Bitcoin and Ethereum which makes sense as they are currently the most used blockchains. Tether found initial success on the Bitcoin network because it gave users security and during this time frame Bitcoin was in its bull market. However, there was a switch to Ethereum because of the Defi potential which allows users to have a passive income. This was shown in 2019 when the market cap for ERC 20 was at 10 billion compared to Omni which was at 1.3 billion. However, the downside to this is that the ERC 20 blockchain became saturated. This increased traffic is not good for a blockchain that famously is very busy.