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On (Multi-stage) Proof-of-Works
2021In this paper we analyze permissionless blockchain protocols, whose distributed consensus algorithm lies on a Proof-of-Work composed of \(k > 1\) consecutive hash-puzzles, that have to be solved sequentially. Our contribution is twofold. First, under common assumptions in the literature, we provide a closed-form expression for the mining probability of
D’Arco, Paolo, Mogavero, Francesco
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2020
The primary goal of this chapter is to clearly explain how blocks are mined in a blockchain. Indirectly, this explains how new currency comes into being, as well as how disparate people forming a network can all reach consensus (agree on the state of the blockchain).
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The primary goal of this chapter is to clearly explain how blocks are mined in a blockchain. Indirectly, this explains how new currency comes into being, as well as how disparate people forming a network can all reach consensus (agree on the state of the blockchain).
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On the Security and Performance of Proof of Work Blockchains
Proceedings of the 2016 ACM SIGSAC Conference on Computer and Communications Security, 2016Proof of Work (PoW) powered blockchains currently account for more than 90% of the total market capitalization of existing digital cryptocurrencies. Although the security provisions of Bitcoin have been thoroughly analysed, the security guarantees of variant (forked) PoW blockchains (which were instantiated with different parameters) have not received ...
Gervais, Arthur +5 more
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Proof of Work Without All the Work
Proceedings of the 19th International Conference on Distributed Computing and Networking, 2018Proof-of-work (PoW) is an algorithmic tool used to secure networks by imposing a computational cost on participating devices. Unfortunately, traditional PoW schemes require that correct devices perform computational work perpetually, even when the system is not under attack.We address this issue by designing a general PoW protocol that ensures two ...
Diksha Gupta, Jared Saia, Maxwell Young
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Proof of Bid as Alternative to Proof of Work
2020Proof of Work (PoW) protocol for cryptocurrency uses an excessive amount of electricity to secure the network. Many PoW coins do not have sufficient hashing power to secure itself. There are many alternatives to PoW, such as Proof of Stake (PoS), merge-mining etcetera, which uses much less electricity.
Wai Kok Chan, Ji-Jian Chin, Vik Tor Goh
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Poster: Timestamp Verifiability in Proof-of-Work
Proceedings of the Twenty-fourth International Symposium on Theory, Algorithmic Foundations, and Protocol Design for Mobile Networks and Mobile Computing, 2023Tzuo Hann Law, Selman Erol, Lewis Tseng
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Preventing proof-of-work mining attacks
Information Sciences, 2022Hamid Azimy +2 more
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