Why No Consensus on Consensus? A Deep Dive into Blockchain Consensus Protocols
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arXiv
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| Format: | Preprint |
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2026
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| _version_ | 1866914380188221440 |
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| author | Pishdar, Mohammad Manzoor, Jawad |
| author_facet | Pishdar, Mohammad Manzoor, Jawad |
| contents | Blockchain technology has revolutionized the digital landscape, driving innovations across industries through its decentralized and transparent infrastructure. These networks are primarily categorized as public or private, based on user access permissions. Public blockchains are open to all and fully decentralized while private blockchains have restricted access to authorized participants only and they are usually centralized or partially decentralized. Consensus protocols are at the heart of blockchain networks, playing a pivotal role in maintaining security, ensuring consistency, and achieving agreement among distributed nodes. This paper provides a critical and unified analysis, including detailed workflows, that addresses the limita- tions of recent literature. Furthermore, this research investigates the strengths and limitations of each protocol, shedding light on their suitability for various applications, including financial transactions, supply chain management, healthcare, and beyond. A critical analysis of ongoing challenges, such as security vulnerabilities, scalability bottlenecks, and energy consumption is provided. Finally, the paper identifies key research gaps in the field, offering insights into potential areas for future work and emerging trends aimed at addressing these issues. This comprehensive analysis serves as a valuable resource for re- searchers, practitioners, and organizations seeking to understand the role of consensus protocols in shaping the future of blockchain technology. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2603_08629 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Why No Consensus on Consensus? A Deep Dive into Blockchain Consensus Protocols Pishdar, Mohammad Manzoor, Jawad Cryptography and Security Blockchain technology has revolutionized the digital landscape, driving innovations across industries through its decentralized and transparent infrastructure. These networks are primarily categorized as public or private, based on user access permissions. Public blockchains are open to all and fully decentralized while private blockchains have restricted access to authorized participants only and they are usually centralized or partially decentralized. Consensus protocols are at the heart of blockchain networks, playing a pivotal role in maintaining security, ensuring consistency, and achieving agreement among distributed nodes. This paper provides a critical and unified analysis, including detailed workflows, that addresses the limita- tions of recent literature. Furthermore, this research investigates the strengths and limitations of each protocol, shedding light on their suitability for various applications, including financial transactions, supply chain management, healthcare, and beyond. A critical analysis of ongoing challenges, such as security vulnerabilities, scalability bottlenecks, and energy consumption is provided. Finally, the paper identifies key research gaps in the field, offering insights into potential areas for future work and emerging trends aimed at addressing these issues. This comprehensive analysis serves as a valuable resource for re- searchers, practitioners, and organizations seeking to understand the role of consensus protocols in shaping the future of blockchain technology. |
| title | Why No Consensus on Consensus? A Deep Dive into Blockchain Consensus Protocols |
| topic | Cryptography and Security |
| url | https://arxiv.org/abs/2603.08629 |