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Blockchain Synchronous Trust Consensus Model [article]

Christopher Gorog, Terrance E. Boult
2021 arXiv   pre-print
The Synchronous Trust Consensus Model applied research project named Project Philos was sponsored by the BlockChain Development Community (BCDC) with support from the University of Colorado.  ...  Results show that this new model proves the feasibility of an indefinitely expandable blockchain distributed ledger capability, while also providing a new participant incentive that is highly effective  ...  Synchronous Trust Consensus Model™ We introduce the "Synchronous Trust Consensus Model™" (STCM) as a new direction for blockchain distributed ledger governance based on the results of applied research,  ... 
arXiv:2112.03692v1 fatcat:bw4wkovkrrgstnipj5shnwxqgq

GFL: A Decentralized Federated Learning Framework Based On Blockchain [article]

Yifan Hu, Yuhang Zhou, Jun Xiao, Chao Wu
2021 arXiv   pre-print
In this paper, we propose Galaxy Federated Learning Framework(GFL), a decentralized FL framework based on blockchain.  ...  In addition, GFL introduces InterPlanetary File System(IPFS) and blockchain to further improve communication efficiency and FL security.  ...  Further, the trusted node synchronizes models so that all trusted nodes obtain the model of the remaining trusted nodes.  ... 
arXiv:2010.10996v3 fatcat:537mj4dykzhaleegq2752wzrp4

BlockPGP: A Blockchain-based Framework for PGP Key Servers

Alexander Yakubov, Wazen Shbair, Nida Khan, Radu State, Christophe Medinger, Jean Hilger
2020 International Journal of Networking and Computing  
BlockPGP: A Blockchain-based Framework for PGP Key Servers certificate identity confirmation known as "Web of Trust".  ...  With the launch of private blockchain applications, identification services shall be provided based on decentralized solutions, and we do not see an alternative here to Web of Trust framework implemented  ...  For Proof-of-Work consensus a new block is usually fully synchronized among almost all active miners, which also can be considered as authorized nodes. • Additionally, SI epidemic model better reflects  ... 
doi:10.15803/ijnc.10.1_1 fatcat:mfk4zeb5wzcfjeptquxevzrvnu

Blockchain Consensus Protocols in the Wild [article]

Christian Cachin, Marko Vukolić
2017 arXiv   pre-print
Moreover, we review the consensus protocols in some prominent permissioned blockchain platforms with respect to their fault models and resilience against attacks.  ...  Consensus protocols for tolerating Byzantine faults have received renewed attention because they also address blockchain systems.  ...  Assembly uses the standard resilience assumptions for BFT consensus in the eventually-synchronous model considered here.  ... 
arXiv:1707.01873v2 fatcat:wicbybpnqbhazpwdohh4rxrnky

Decentralized Spectrum Access System: Vision, Challenges, and a Blockchain Solution [article]

Yang Xiao, Shanghao Shi, Wenjing Lou, Chonggang Wang, Xu Li, Ning Zhang, Y. Thomas Hou, Jeffrey H. Reed
2021 arXiv   pre-print
To address these challenges, we propose a novel blockchain-based decentralized SAS architecture called BD-SAS that provides SAS services securely and efficiently, without relying on the trust of each individual  ...  In BD-SAS, a global blockchain (G-Chain) is used for spectrum regulatory compliance while smart contract-enabled local blockchains (L-Chains) are instantiated in individual spectrum zones for automating  ...  to attain consensus security under a zero-trust and pseudonymous participation model.  ... 
arXiv:2112.05612v1 fatcat:7duc2anldfhi3dsor6csskxxbe

A Taxonomy of Blockchain Consensus Methods

Jeff Nijsse, Alan Litchfield
2020 Cryptography  
However, there appears to be a degree of misunderstanding about how consensus is applied across blockchains.  ...  For a blockchain, consensus is the foundation protocol that enables cryptocurrencies such as Bitcoin to maintain state.  ...  LibraBFT [37] , otherwise known as the Libra blockchain, applies BFT consensus and is partially synchronous.  ... 
doi:10.3390/cryptography4040032 fatcat:5odh2nuv7veypo7cahu4tv5tui

A Novel Blockchain Framework for Industrial IoT Edge Computing

Xuesong Xu, Zhi Zeng, Shengjie Yang, Hongyan Shao
2020 Sensors  
A lightweight consensus algorithm and a dynamic trust right algorithm is developed to improve the throughput of blockchain and reduce the number of transactions validated in new blocks respectively.  ...  A distributed trust and allocated ledger of blockchain technology are suitable for the distributed IIoT, which also becomes an effective method for edge computing applications.  ...  In Section 3, we propose a layered blockchain model and RCL, REL schemes. A consensus algorithm, trust right mechanism, and high-throughput management algorithms are carried out respectively.  ... 
doi:10.3390/s20072061 pmid:32272555 fatcat:3hp655oiqjag5i65juozc5ku5e

Blockchain-based Traffic Event Validation and Trust Verification for VANETs

Yao-Tsung Yang, Li-Der Chou, Chia-Wei Tseng, Fan-Hsun Tseng, Chien-Chang Liu
2019 IEEE Access  
INDEX TERMS Blockchain, event validation, proof-of-event consensus, trust verification, vehicular ad-hoc networks. 30868 2169-3536  ...  The blockchain ensures the correctness of data and tampers resistance in the consensus mechanism, which can solve such similar problems.  ...  In this section, we provide an overview of security, privacy, trust model, blockchain, and consensus mechanisms in VANETs. A.  ... 
doi:10.1109/access.2019.2903202 fatcat:b2xwkksklffoxowmzju6klg7ie

FLoBC: A Decentralized Blockchain-Based Federated Learning Framework [article]

Mohamed Ghanem, Fadi Dawoud, Habiba Gamal, Eslam Soliman, Hossam Sharara, Tamer El-Batt
2021 arXiv   pre-print
In this work, we demonstrate our solution FLoBC for building a generic decentralized federated learning system using blockchain technology, accommodating any machine learning model that is compatible with  ...  Finally, we utilize FLoBC as an experimental sandbox to compare and contrast the effects of trainer-to-validator ratio, reward-penalty policy, and model synchronization schemes on the overall system performance  ...  blockchain network through decentralized consensus based on nodes to finish their computation at each synchronization voting.  ... 
arXiv:2112.11873v1 fatcat:fhe56ttnfrdixhu4j52hhndhtm

Assessing Security and Performances of Consensus algorithms for Permissioned Blockchains [article]

Stefano De Angelis
2018 arXiv   pre-print
Conversely, for permissioned blockchain, where participants are known and authenti- cated, variants of distributed consensus algorithms have been employed.  ...  Initially, the underlying consensus mechanism has been designed for permissionless block- chain on trustless network model through the proof-of-work, i.e. a mathematical challenge which requires high computational  ...  Failure Mode Synchronous Asynchronous Partially Synchronous In Table 2 .1 is shown the comparison of trust assumptions required for consensus, considering all the failure models introduced before in  ... 
arXiv:1805.03490v1 fatcat:5l4ljdtlqrbq7p2q5al3vka3tu

Enhancing IoT Data Dependability through a Blockchain Mirror Model

Alessandro Bellini, Emanuele Bellini, Monica Gherardelli, Franco Pirri
2019 Future Internet  
A simple formal model named "the Mirror Model" is proposed to connect IoT data organized in traditional models to assets of trust in a blockchain.  ...  The Mirror Model sets some formal conditions to produce trusted data that remain trusted over time.  ...  Trust is evidently the domain of blockchain for the simple reason that blockchain enforces the necessary mechanisms of immutability and consensus and makes available an immutable history of stored events  ... 
doi:10.3390/fi11050117 fatcat:pqukekxbn5hfzjg3h4iwq57td4

Blockchain applications in Healthcare: A model for research [article]

Amir Hussain Zolfaghari
2020 arXiv   pre-print
A model presenting the points in each layer is explored. Finally, we present an example of how the perspective we describe can improve the development of Health Information Systems.  ...  This paper proposes a layered approach for the organization of blockchain in healthcare applications. Key issues driving the adoption of this technology are explored.  ...  Blockchain is a new trend in trust and security.  ... 
arXiv:2008.05683v1 fatcat:6ybmpqdof5eelbqjnrcxcrf3pa

Blockchains And Consensus Protocols: Snake Oil Warning

Christian Cachin
2017 Zenodo  
Consensus protocols for tolerating Byzantine faults have received renewed attention because they also address blockchain systems.  ...  All nodes validate the information to be appended to the blockchain, and a consensus protocol ensures that the nodes agree on a unique order in which entries are appended.  ...  Acknowledgments This talk is based on a forthcoming survey of blockchain consensus protocols, jointly authored with Marko Vukolić.  ... 
doi:10.5281/zenodo.1343483 fatcat:sogugbr3vjg3xpizuftpgycyo4

A Tendermint Light Client [article]

Sean Braithwaite and Ethan Buchman and Ismail Khoffi and Igor Konnov and Zarko Milosevic and Romain Ruetschi and Josef Widder
2020 arXiv   pre-print
In Tendermint blockchains, the proof-of-stake mechanism and the underlying consensus algorithm entail a dynamic fault model that implies that the active validators (nodes that sign blocks) may change over  ...  In this paper we formalize the dynamic fault model imposed by Tendermint, and describe a light client protocol that allows to check the state of the blockchain application that, in realistic settings,  ...  Light clients synchronize to the latest block of the blockchain by verifying validator signatures.  ... 
arXiv:2010.07031v2 fatcat:abkbqrieubdyzemznvcknhwqja

On Using Blockchains for Beyond Visual Line of Sight (BVLOS) Drones Operation: An Architectural Study [article]

Tahina Ralitera, Agnes Lanusse, Önder Gürcan
2022 arXiv   pre-print
They also allow for traceability of exchanges and perform synchronization with other nodes in the network.  ...  As a solution, blockchain-based services could enable secure and trustworthy exchange and storage of related data.  ...  Multi-Agent Modelling of Fairness for Users and Miners in Blockchains.  ... 
arXiv:2201.07793v1 fatcat:p65wv7l3hna5hbgzqql7q6ibwi
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