Volunteer service time record system based on blockchain technology

In recent years, volunteer service in China has made an unprecedented development, but the credibility and traceability of volunteer service time management are confronted with serious challenges. Since traditional time record systems cannot protect the related data security of the volunteers. In this paper, we study the volunteer time record system based on the blockchain technology which is the core technology of bitcoin, unlike bitcoin transaction in our system are not strictly financial - they are used to carry instructions, such as storing, querying, and sharing data. Volunteer service time and activity information recorded by sending the chain transaction. Effective time recognition is guaranteed by smart contract. It can ensure that the volunteer's time is independent of improper human interference, and the fairness of volunteer service, realizes the traceability and transparency of the entire time record process. Then we describe a specific case and use the system we proposed storing the volunteer service time, volunteers' service time can be certified effectively.