The microtransactions can easily happen in electronic commerce as people purchase the inexpensive products like a digital data. The microtransactions are important because they are very practical in the various fields even though it costs very little. A lot of protocols have been studied for the microtransactions, but there is no micropayment system to provide user's anonymity. In this paper. the existing micropayment protocols are introduced and a new protocol with providing user's anonymity is proposed.
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