Rootstock Bitcoin Blockchain

Rootstock, formerly RSK, is a smart-contract layer for Bitcoin that works as a sidechain and enables Bitcoin DeFi. It is fully EVM-compatible, supports Solidity contracts, and relies on merge mining with Bitcoin miners, giving the network a strong security profile while allowing BTC-based smart-contract execution through rBTC.

Rootstock combines Bitcoin's security and liquidity with Ethereum-style programmability, making it suitable for lending, trading, DEX products, bridges, and other BTC-centric Web3 services. Its ecosystem includes DeFi protocols, aggregators, and infrastructure tools built around Bitcoin liquidity.

If you want to launch a Bitcoin-based DeFi protocol, payment product, DEX, bridge, or other Web3 solution on Rootstock, FreeBlock can build the project from architecture and contracts to ecosystem integration and interface design.