Improvements on Easypaysy: The Bitcoin’s Layer-2 Accounts Protocol

Bitcoin employs multiple technologies from various fields of science and engineering to provide a solution for decentralized digital currency. However, it can be used as an infrastructure to build many other schemes. Protocols over the Bitcoin’s blockchain use the power of decentralization to achieve interesting goals. These protocols often improve Bitcoin’s properties or increase its capabilities.Easypaysy is one of these protocols that are considered as blockchain layer-2. The goal of Easypaysy is to add user-friendliness of having accounts to Bitcoin while maintaining the level of privacy it already provides. In this paper, two improvements over Easypaysy protocol are proposed. In the first one, we suggest a new type of payment that can offer deniable authentication property. The other proposal provides hierarchical account systems. We discuss the scenarios in which each one can be useful. Then, the security features of each proposed scheme will be explained.