So rootstock is only a smartcontract platform that uses 2-way peg. It means they will use BTC as a medium for transactions? How this 2-way peg resolve the scalability when BTC already has the problem?
Also interested in the answer to that question. They will add a 2-way peg to Litecoin. There's plenty of free space on that blockchain
https://twitter.com/dieguito/status/867883917654863873