Results 21 to 30 of about 696,109 (263)
CoRR, 2019 Most cryptocurrencies rely on Proof-of-Work (PoW) "mining" for resistance to Sybil and double-spending attacks, as well as a mechanism for currency issuance. Hashcash PoW has successfully secured the Bitcoin network since its inception, however, as the network has expanded to take on additional value storage and transaction volume, Bitcoin PoW's heavy ...
Michael Dubrovsky +2 more
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How to Prove Work: With Time or Memory
IEEE Access, 2022 Proposed by Dwork and Naor (Crypto’ 92) as an anti-spam technique, proof-of-work is attracting more attention with the boom of cryptocurrencies. A proof-of-work scheme involves two types of participants, $\textit {i.e.}$ , provers and verifiers ...
Xiangyu Su +2 more
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Performance analysis and comparison of PoW, PoS and DAG based blockchains
Digital Communications and Networks, 2020 In the blockchain, the consensus mechanism plays a key role in maintaining the security and legitimation of contents recorded in the blocks. Various blockchain consensus mechanisms have been proposed.
Bin Cao +6 more
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Paillier Cryptosystem Based ChainNode for Secure Electronic Voting
Frontiers in Blockchain, 2022 Blockchain is a distributed and decentralized ledger of transactions that are linked together cryptographically leading to immutability and tamper-resistance, thereby ensuring the integrity of data.
Buhari Ugbede Umar +3 more
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On the Issue of Using “Useful” Tasks for Proof of Works in Blockchain
Моделирование и анализ информационных систем, 2019 This paper is a logical continuation of the paper about possible approaches to solving the “Useful Proof-of-work for blockchains” problem. We suggest some alternative ways for searching useful tasks for Proof-of-work systems.
Dmitry M. Murin, Vladimir N. Knyazev
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IMPROVING BYZANTINE FAULT TOLERANCE IN SWARM ROBOTICS COLLECTIVE DECISION-MAKING SCENARIO VIA A NEW BLOCKCHAIN CONSENSUS ALGORITHM [PDF]
ICTACT Journal on Soft Computing, 2023 Swarm robotics applies concepts of swarm intelligence to robotics. Discrete consensus achievement is one of the major behaviors found in swarm robotics. Various algorithms have been developed for discrete consensus achievement. However, existing discrete
Theviyanthan Krishnamohan
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Valuable Puzzles for Proofs-of-Work [PDF]
, 2018 Proof-of-work (PoW) is used as the consensus mechanism in most cryptocurrencies. PoW-based puzzles play an important part in the operation and security of a cryptocurrency, but come at a considerable energy cost. One approach to the problem of energy wastage is to find ways to build PoW schemes from valuable computational problems.
Boyd, Colin Alexander, Carr, Christopher
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Mining Pool Manipulation in Blockchain Network Over Evolutionary Block Withholding Attack
IEEE Access, 2019 In the current blockchain network, many participants rationally migrate the pool to receive a better compensation according to their contribution in situations where the pools they engage encounter undesirable attacks.
Seonggeun Kim, Sang-Geun Hahn
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IEEE Access, 2020 Blockchains are being recently used as a supporting technology framework for decentralized applications requiring functionalities such as exchange of value through tokens, cryptocurrency and smart contracts.
Konstantinos Tsoulias +4 more
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Indistinguishable Proofs of Work or Knowledge [PDF]
, 2016 We introduce a new class of protocols called Proofs of Work or Knowledge PoWorKs. In a PoWorK, a prover can convince a verifier that she has either performed work or that she possesses knowledge of a witness to a public statement without the verifier being able to distinguish which of the two has taken place.
Foteini Baldimtsi +3 more
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