A survey of blockchain consensus safety and security: State-of-the-art, challenges, and future work

Bao, Qihao; Li, Bixin; Hu, Tianyuan; Sun, Xu-Bao

doi:10.1016/j.jss.2022.111555

Cited by 29 publications

(12 citation statements)

References 36 publications

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“…As part of blockchain technology, consensus protocols significantly impact the safety and security of blockchain systems [19]. The blockchain system uses a consensus algorithm to build trust and properly store block transactions [20].…”

Section: Data Securitymentioning

confidence: 99%

Private Blockchain in the Field of Health Services

Purwono

Nisa

Wibisono

et al. 2023

JAHIR

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Blockchain is a technology that is quite popular and has been adopted in various fields in recent years. This technology has caught the attention of researchers in the health sector because of its innovation which is considered capable of providing the necessary guarantees for the safe processing, sharing, and management of sensitive patient data. There are many problems with falsifying reports and withholding important information from patients, which is considered medical fraud. Hyperledger, a type of private Blockchain, is very suitable for healthcare applications. A private blockchain is a restricted type of blockchain network created by an entity. This type of network is limited to those with access permissions. In addition, private blockchains usually use a centralized verification system and are controlled by the network's creators. Hyperledger Fabric is one example of a permissioned blockchain that can play a role in implementing patient-centric, interoperable healthcare systems

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Section: Data Securitymentioning

confidence: 99%

Private Blockchain in the Field of Health Services

Purwono

Nisa

Wibisono

et al. 2023

JAHIR

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“…In this technology, all transactions between customers and sellers are guaranteed by using cryptographic protocols, while reducing exchange costs. 2 Thus, in blockchain technology, the possibility of any duplicate activity or fraudulent transactions is eliminated without the need for the presence of any third party, while ensuring the security of the system. 1 In the architecture of this system, the existence of geographically, temporally and spatially distributed ledger is updated with the help of intelligent methods about the correct status of users' files.…”

Section: Introductionmentioning

confidence: 99%

“…3 Also, blockchain technology provides safe peer-to-peer transactions by omission intermediary institutions such as central banks. 2 In fact, in this technology, there is no centralized governance system to achieve consensus among different sectors, the main concern is how to control such a system, and scientists have used the consensus algorithm to solve this problem. 4 In fact, the consensus algorithm wants to solve the problem of different entities' opinions in decentralized networks and providing a way to reach an agreement.…”

Section: Introductionmentioning

confidence: 99%

“…Blockchain, as a decentralized distributed chain‐work, shared and unified public ledger and provides information equally to all members of the electricity network and make capable network members to read, write, and verify registered transactions, but does not allow any transformation or elimination in this transaction. In this technology, all transactions between customers and sellers are guaranteed by using cryptographic protocols, while reducing exchange costs 2 . Thus, in blockchain technology, the possibility of any duplicate activity or fraudulent transactions is eliminated without the need for the presence of any third party, while ensuring the security of the system 1 .…”

Section: Introductionmentioning

confidence: 99%

“…This technology removed the need for a trusted central third party and reduces exchange costs, by speeding up the access of network members to information which is an important step in directing the energy markets towards trading in the cash market and has established the dominance of the market system in the market 3 . Also, blockchain technology provides safe peer‐to‐peer transactions by omission intermediary institutions such as central banks 2 . In fact, in this technology, there is no centralized governance system to achieve consensus among different sectors, the main concern is how to control such a system, and scientists have used the consensus algorithm to solve this problem 4 .…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A blockchain‐based smart contract model for secured energy trading management in smart microgrids

Su,

Hu,

Liu

et al. 2023

Security and Privacy

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The extension of emerging renewable energy sources such as wind and water turbines, solar panels, and the increasing usage of electric vehicles requires the supply and distribution of energy in a small device on local scale and it has created new methods of supplying and selling electricity. Middle buyers and end users can obtain the local energy with the peer‐to‐peer trading method in this large and hierarchical market. This method enables market to manage and exchange the electricity between major suppliers and medium and local levels. Blockchain technology is developing in peer‐to‐peer exchange of electricity and acts as a reliable, efficient, and safe technology in the electricity trading market. In this method, while preserving the privacy of electricity users, by using smart contracts and by removing intermediaries in the energy supply and demand market, direct commercial interactions between energy suppliers and consumers are done. The blockchain technology, while creating trust between the parties in the energy market, reduces the cost of electricity trading and increases its scalability with using the intermediate energy aggregators. In this research, the blockchain‐based model, is presented for distribution and peer‐to‐peer transactions in the energy market. The suggested model provides the possibility of registration low‐cost instant transactions at the power grid in any specific period of time. The above method, unlike periodic payments, provides immediate access to bills and small payments. Since the transactions outside the blockchain chain are not recorded, this system guarantees its honest and independent operation without fraud and failure. The smart contract method based on blockchain, reduces the transaction fees and speeds up electricity trading. Also, the experimental investigation in 20 nodes shows the time required to determine the exchange contract in the blockchain method. The average is improved by 49.7% in this method. Also, the negotiation convergence time has become 47% faster.

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