Özet:

With the Covid-19 pandemic, many requirements are carried out according to distance and social distance rules. These rules are applied in many areas such as education, work, market shopping. Polling or voting may also become mandatory in this process. Today, most of the surveys are carried out through electronic systems. Users can exchange own ideas without any contact with the created surveys. A survey system was created in our study. In the study, advanced security of the survey records was ensured by storing the data on the smart contract that is created in the ethereum network using the blockchain infrastructure. In the study, while ensuring the security of user data, ease of use was also provided. Web3.js, Bootstrap and MVC technologies were also used for web interfaces in the study. Data recording was done in two fields to ensure flow. One of them is ethereum-based smart contract and the other is MySQL database. User data first requests registration to the block network. During this time, the data is saved in the MySQL database so that the user does not wait until the record is registered in the network. Thus, the user does not have to wait and can continue with his transactions. When the user wants to control his data from the system, the control module is requested to compare the data in the ethereum test network with the MySQL data. If there is a problem after the comparison, the administrator checked the profile key and the record in the blockchain network, which provides full security, was accepted as correct. The study contributes to the literature by providing the highest level of security for the user data in the survey.

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