Xdc (xuedaocoin, referred to as Xdc) is a decentralized blockchain digital asset issued by Xuedao based on the Ethereum public chain. It is the cornerstone of the negotiable proof of encrypted digital rights and interests and community governance of Xuedao platform. The consensus mechanism of contribution proof is adopted to allocate most Xdc to platform contributors. At the same time, Xdc holders enjoy the rights of community governance, such as the right to participate in decision-making, the right to vote and supervise, the right to use, etc. The total amount of Xdc distribution is 100 million, which is constant and cannot be changed.