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The widespread adoption of the e-commerce and web-based business has brought great increase in credit card utilization for online transactions which in turn resulted in sophisticated fraud attempts. Accurate fraud prevention and detection is a key concern in cashless economy. Multifactor authentication among others such as machine learning based behavioral analysis, data mining, black listing is one of the effective methods augmenting primary information checking. SMS messages are sent to registered phone in addition to credit card information as a second level protection. However, this information might be vulnerable to various attacks as some third party services are in the game. This paper proposes adoption of blockchain as a secure platform to store the second factor security information. User’s mobile device signature attested by the bank is stored in a permissioned blockchain. This information is …