关键词: 区块链, 智能合约, 众筹, 以太坊, 合约验证

Abstract: Crowdfunding is a prevailing internet financing model. But the current crowdfunding platform still has a lot of issues, for instance, illegal operations, lack of credibility, and poor supervision. The smart contract is an event-driven, state-based code contract and algorithm contract. With the deep development of blockchain technology, it has received extensive attention and research. The blockchain-based smart contract technology has the characteristics of de-centralization, autonomy, observability, verifiability and information sharing. Therefore, it can also be effectively applied to build programmable finance. The blockchain-based smart contract technology provides a new way to solve the issues of crowdfunding platforms. On the basis of the theory of blockchain and smart contract, this paper establishes a crowdfunding blockchain contract and develops a crowdfunding contract system that based on Ethereum’s experimental environment. The smart contract transforms the traditional crowdfunding contract text into program code. The storage and execution of contacts are performed on the blockchain. For this reason, it not only ensures the self-government and reliability of projects, but also enhances projects credibility and public credibility.

Key words: blockchain, smart contracts, crowdfunding, Ethereum, contract verification