Spectrum is an L2 restaking service where users stake ETH, stETH, or eETH, and enjoy the additional ecosystem built with spETH as well as have all the accumulated staking rewards. spETH, which stands for Spectrum Staked ETH, is a synthetic asset created exclusively from the Ethereum blockchain's primary staking assets: ETH, stETH, and eETH. By leveraging these specific Liquid Staking Tokens as collateral, spETH enables users to efficiently utilize their staked assets within a wide array of DeFi protocols and DApps, within the Kroma ecosystem.