#bitalyer The decentralized financial ecosystem (DeFi) of Bitcoin, known as BTCFi, is proliferating despite the lack of native smart contract functionality on the Bitcoin blockchain. Various technologies are being used to address this limitation and bring DeFi and other decentralized solutions to the Bitcoin ecosystem. One of the key ways to enable such functionality for the Bitcoin environment is through the use of computational engines, or virtual machines (VM), that are capable of executing smart contracts. Additionally, some layer 2 platforms are also used to power decentralized applications (DApps) on Bitcoin.