The focus of the Bitcoin ecosystem's development lies in supporting market activities. Mainstream Layer2 solutions include the Lightning Network, sidechains, and Rollups. The Lightning Network enables peer-to-peer payments by establishing off-chain payment channels, while sidechains achieve this by locking Bitcoin assets and minting equivalent assets on the sidechain. Within the Bitcoin ecosystem, there are also stablecoin protocols and various DeFi projects. Unlike Ethereum, Bitcoin's Layer2 solutions offer multiple choices. The Lightning Network has the potential to achieve high TPS (transactions per second) but carries centralization risks. Sidechain solutions, similar to Ethereum, can issue assets equivalent to Bitcoin at a 1:1 ratio. Additionally, there are various cross-chain bridge solutions and Bitcoin-based DeFi protocols, such as B2 Network, Merlin Chain, and Alex. The Bitcoin ecosystem will serve as a crucial engine for this bull market, with various DeFi protocols, stablecoin protocols, and cross-