A Social Recommendation Mechanism for P2P Currency Exchange In recent years, there are growing numbers of people going abroad for studying and traveling which indicates that the demand of currency exchanges is increasing. However, some problems are existed when we exchange currency through the banks. Consequently, the new financial service called P2P currency exchange emerged which aims to disrupt the foreign exchange (FX) markets. In this paper, we propose a recommendation mechanism for P2P currency exchange which is based on social networks and analyze usersu0027 preference, similarity and locationbased service. Then evaluating social trust by social influence computing. We look forward to providing proper candidates and encouraging sharing economy in finance sector which greatly decrease the cost of currency exchange

Blockchain for tracking serial numbers in money exchanges Money exchange is one of the most common dayxe2x80x90toxe2x80x90day activities performed by humans in the daily market. This paper presents an approach to money tracking through a blockchain. The proposed approach consists of three main components: serial number localization, serial number recognition, and a blockchain to store all transactions and ownership transfers. The approach was tested with a total of 110 banknotes of different currency types and achieved an average accuracy of 91.17%. We conducted a user study in realxe2x80x90time with 21 users, and the mean accuracy across all users was 86.42%. Each user gave us feedback on the proposed approach, and most of them welcomed the idea.