At the begining of June only 5.1k BTC was locked on Ethereum. In a matter of three months the amount of Bitcoin locked on Ethereum increased to 75.9k BTC. This means that 0.41% of Bitcoin's total circulating supply is locked on Ethereum.
The highest total supply value has Wrapped Bitcoin (WBTC), which is 48.5k BTC.
The biggest increase in total supply had renBTC, which had only 2.2k BTC locked on Ethereum at the begining of August. Today, renBTC is sitting at 18.3k BTC locked on Ethereum.
Data by Santiment