Rubic (RBC) is a crypto-currency token that powers the Rubic ecosystem, a decentralized financial protocol (DeFi) and multi-chain DEX aggregator. It enables cross-chain functionality for users and decentralized applications (dApps), allowing transparent exchanges of tokens and NFTs between different blockchains. The token facilitates SDK subscriptions, integration service fees, governance, and offers lower fees for holders, making it a crucial part of the Rubic ecosystem.