Titlebook: Blockchain Scalability and its Foundations in Distributed Systems; Vincent Gramoli Textbook 2022 Springer Nature Switzerland AG 2022 Block

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Making Blockchains Secure,In this chapter, we tackle the problem of security. As blockchain found applications to track ownership of digital assets, it is crucial for companies to adopt more secure blockchains than the ones proven vulnerable to network attacks before moving them in production.

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Consensus in Blockchain, then present the key elements that allow it to be used to transfer digital assets. We finally motivate the need for a set of distributed machines, referred to as nodes or processes, to agree upon the series of blocks that constitute the blockchain. This consensus will be described in more detail in Chapter ..

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Making Blockchains Scale,in systems is a difficult problem as their properties often deteriorate with the system size. Their carbon footprint and the cumulative storage space they consume typically enlarges as more miners enter the race of finding the proof-of-work described in Chapter .. However, their performance does not necessarily improve.

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José María Fanelli,Gary McMahony promises to radically transform the way individuals and companies exchange digital assets, be they cryptocurrencies or data, without the need to trust an institution. In 2008, as people lost trust in financial institutions in the midst of the Global Financial Crisis, the blockchain technology beca

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?mer E?ecio?lu,Adriano M. Garsiamalicious nodes and how their consensus protocol copes with forks by pruning branches in order to converge to a unique chain of blocks. As we presented in Chapter ., it is possible to exploit these forks to steal assets by double spending. It is thus important when building blockchains to think abou