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By: Qutaiba I. Ali, Zeina Ali M., and Basma Ahmed Jalil
Recently, the Blockchain technique has gained significant attention and is being increasingly adopted across various sectors. Blockchain is fundamentally a sequence of interconnected blocks, each storing essential information. This technology operates as a secure, distributed ledger that allows anyone to access and verify the data stored within it, ensuring transparency and trust. This paper provides a comprehensive overview of Blockchain technology, explaining its core concept, underlying principles, communication protocols, and illustrating its applications with relevant examples. Furthermore, the paper explores one of the most renowned implementations of Blockchain, the Bitcoin system. Bitcoin is a decentralized cryptocurrency platform that enables peer-to-peer payment transactions without the involvement of intermediaries like banks. Each block in the Bitcoin network contains critical elements, such as transaction details, a unique hash, and the previous block’s hash. The paper also delves into the security measures associated with the Bitcoin system, highlighting its strengths as well as addressing potential vulnerabilities. Additionally, it discusses various types of attacks that could compromise the integrity and reliability of the system.
Keywords: Blockchain, consensus algorithms, bitcoins, cryptocurrency, power
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Citation:
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