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However, the vehicle information in the market of second\u2010hand vehicles is centralized at present. In other words, the vehicle information is still provided by the second\u2010hand vehicle dealers, which are not transparent and have no tampering cost. As the result, the authenticity, accuracy, and fairness of these second\u2010hand vehicle data are worth discussing. To solve the above problems, this paper proposed a trusted vehicle data source system based on blockchain technology. The system is built on the Ethereum platform with the private chain structure. With the help of our platform, a trusted third party (e.g., maintenance plant and government branch) can record vehicle information into Blockchain so the integrity of vehicle information can be maintained. Customers can easily query the relevant vehicle information through our system interface and avoid receiving fake vehicle information. This system is a Proof of Concept (PoC), and the feasibility is examined by evaluating transactions per second (TPS) of the proposed system.<\/jats:p>","DOI":"10.1155\/2021\/6623251","type":"journal-article","created":{"date-parts":[[2021,5,29]],"date-time":"2021-05-29T16:23:17Z","timestamp":1622305397000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":17,"title":["A Blockchain\u2010Based Vehicle Condition Recording System for Second\u2010Hand Vehicle Market"],"prefix":"10.1155","volume":"2021","author":[{"given":"You-Ting","family":"Jiang","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0870-9973","authenticated-orcid":false,"given":"Hung-Min","family":"Sun","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2021,5,29]]},"reference":[{"key":"e_1_2_12_1_2","unstructured":"Ministry of Transportation and Communications Taiwan. 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