# Stacks mainnet launch brings smart contracts and DeFi to Bitcoin
“# Stacks mainnet launch brings smart contracts and DeFi to Bitcoin ” Stacks, formerly Blockstack — an open-source network for building decentralized applications — has an ambitious vision to bring smart contracts and decentralized finance to the Bitcoin (BTC) network. On Thursday, the developer community celebrated the launch of Stacks 2.0, a bridging toolkit that…