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Virual Oral Question and Answer
IEEE/ICACT20210248 Question.2
Questioner: mryoulin@gmail.com    2021-02-09 오후 9:59:02 		IEEE/ICACT20210248 Answer.2
Answer by Auhor tglee@ptu.ac.kr   2021-02-09 오후 9:59:02
Hello, it seems that your PTC is a good cryptocurrency suitable for the vending machines which do only deal with small transactions. Could your PTC system prevent double spending ? Thank you for your good question. The PTC system in this paper can ultimately prevent double spending because the lightweight blockchain transaction processing process is periodically (or aperiodically) synchronized to the heavyweight blockchain, and the transaction verification process is performed through the normal mining process.

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