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Blockchain Projects Ecosystem: A Review of Current Technical and Legal Challenges
Blockchain is a decentralized transaction and data management technology devel-oped first for Bitcoin cryptocurrency. The interest in Blockchain technology has been increasing since the idea was presented in 2008. The reasons for all the in-terest around Blockchain comes from its decentralized nature, while providing se-curity, anonymity and data integrity. All these features without any third-party organization in control of the transactions, therefore creating interesting research areas. The Blockchain is a versatile technology, which can be implemented in a vast list of industries and maybe change completely the way we approach some of their use cases. In this paper, we will present some of the most relevant and re-cent Blockchain projects, classifying them by their main purpose or value propo-sition. Additionally, we describe the main technical and legal challenges, which may prevent this technology from a more rapid and wider use.