A Novel Delegated Proof of Work Consensus Protocol

Blockchain is a new technology for storing and transmitting information evolving without centralized control, it uses peer-to-peer networks and allows the constitution of replicated and distributed registers, these registers are secured thanks to cryptography by the linking of blocks to each other. As part of solving the challenges that exist to develop this technology, we present this article introducing significant improvements to this efficient mechanism. These improvements consist of proposing a consensus algorithm called Delegated Proof of Work (DPoW). Thanks to this algorithm, we offer a significant reduction in the very large amount of energy currently consumed in the mining process, we reduce the domination of an element with great computing power, we reinforce security against the 51 % attack, reducing its percentage to 67 %, and we also reduce the influence of false identities created within the network (Sybil Attack). On the other hand, we propose a consensus model for permissioned blockchain, this model is based on the encryption of random values and offers total security to reach a consensus.

• blockchain consensus
• proof-of-work
• energy consumption reduction
• 51% attack
• Sybil attack
• permissioned blockchain
• distributed ledger security

• 7 — طاقة نظيفة وبأسعار معقولة
• 9 — الصناعة والابتكار والبنية التحتية

• Blockchain Technology Applications and Security
• Blockchain Technology in Education and Learning
• Distributed systems and fault tolerance
• blockchain consensus
• proof-of-work
• energy consumption reduction
• 51% attack
• Sybil attack
• permissioned blockchain
• distributed ledger security
• Information Systems
• Computer Networks and Communications
• Computer Science