Sonic (previously known as FTM) is a cryptocurrency that aims to provide fast and secure transactions on its blockchain network. It uses a proof-of-stake consensus mechanism to validate transactions and secure the network. Sonic is designed to be scalable, allowing for high transaction throughput and low fees. It also offers smart contract functionality, enabling developers to create decentralized applications on its platform. Sonic has gained popularity in the cryptocurrency community for its technical innovations and potential for widespread adoption.