Mezo is a Bitcoin layer-2 network (L2) designed to build the economic layer of Bitcoin. By combining technological and economic aspects, it aims to meet the needs of users and Bitcoin holders. Mezo has completed a $21 million Series A funding round led by Pantera Capital, with participation from Multicoin and others. Mezo focuses on long-term active BTC holders, offering returns to encourage Bitcoin holding, and uses mechanisms such as HODL Proof, HODL Score, and deposit custody to incentivize users. Mezo employs tBTC as its foundation, allowing BTC holders to receive tBTC through smart contracts, thus enabling its use on Ethereum. Mezo's development is divided into three phases, currently in the first phase, with plans to launch the mainnet and bridge to the mainnet in the future.