Shiden Network, established by Sota Watanabe, is a decentralized application layer on the Kusama Network, providing smart contract functionality. Its native token, SDN, serves various purposes within the network, including incentivizing participants and enabling token distribution through Lockdrop. With a limited supply of over 71 million tokens, SDN is a key component of the network's ecosystem, supporting activities like staking, commission payments, and participation in dApps and voting systems.