关键词: 区块链, 彩票系统, 去中心化, 安全透明, 共识机制

Abstract: Aiming at the opacity of the current lottery system, a digital lottery issuance system based on blockchain is proposed. The most important feature of the blockchain are “decentralization” and “safe and transparent”, which perfectly fit the basic capabilities required by the lottery industry and future development. This paper introduces several key technologies in the process of building the lottery system based on blockchain, including the “decentralization” control of the winning number selection and the consensus mechanism, and the automatic execution of the smart contract in the lottery drawing process. Through these key technologies, this paper proposes the overall framework and concrete realization of a secure, reliable and decentralized lottery system based on blockchain, which technically solves the trust problem of the current Internet lottery system.

Key words: blockchain, lottery system, decentralization, security and transparency, consensus mechanism