Practical Settlement Bounds for Proof-of-Work Blockchains
Practical Settlement Bounds for Proof-of-Work Blockchains
复制标题
工作量证明区块链的实际结算范围
DOI:
10.1145/3548606.3559368
复制
发表时间:
2022
期刊:
影响因子:
--
通讯作者:
Russell, Alexander
中科院分区:
文献类型:
--
作者:
Gazi, Peter;Ren, Ling;Russell, Alexander
Nakamoto proof-of-work ledger consensus currently underlies the majority of deployed cryptocurrencies and smart-contract blockchains. While a long and fruitful line of work has succeeded to identify its exact security region---that is, the set of parametrizations under which it possesses asymptotic security---the existing theory does not provide concrete settlement time guarantees that are tight enough to inform practice.In this work we provide a new approach for obtaining concrete and practical settlement time guarantees suitable for reasoning about deployed systems. We give an efficient method for computing explicit upper bounds on settlement time as a function of primary system parameters: honest and adversarial computational power and a bound on network delays. We implement this computational method and provide a comprehensive sample of concrete bounds for several settings of interest. We also analyze a well-known attack strategy to provide lower bounds on the settlement times. For Bitcoin, for example, our upper and lower bounds are within 90 seconds of each other for 1-hour settlement assuming 10 second network delays and a 10% adversary. In comparison, the best prior result has a gap of 2 hours in the upper and lower bounds with the same parameters.
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DOI:
10.1145/3372297.3417290
发表时间:
2020
期刊:
CCS '20: Proceedings of the 2020 ACM SIGSAC Conference on Computer and Communications Security
影响因子:
--
作者:
Dembo, Amir;Kannan, Sreeram;Tas, Ertem Nusret;Tse, David;Viswanath, Pramod;Wang, Xuechao;Zeitouni, Ofer
通讯作者:
Zeitouni, Ofer
DOI:
--
发表时间:
2019
期刊:
IEEE International Conference on Distributed Computing Systems
影响因子:
--
作者:
Jun Zhao;Jing Tang
通讯作者:
Jing Tang
DOI:
--
发表时间:
2020
期刊:
IACR Cryptology ePrint Archive
影响因子:
--
作者:
Christian Badertscher;Peter Gazi;A. Kiayias;A. Russell;Vassilis Zikas
通讯作者:
Vassilis Zikas
DOI:
10.1145/3558535.3559791
发表时间:
2022
期刊:
Proceedings of the 4th ACM Conference on Advances in Financial Technologies
影响因子:
--
作者:
Dongning Guo;Ling Ren
通讯作者:
Ling Ren
DOI:
10.1145/3479722.3480992
发表时间:
2020
期刊:
Proceedings of the 3rd ACM Conference on Advances in Financial Technologies
影响因子:
--
作者:
Jing Li;Dongning Guo;Ling Ren
通讯作者:
Ling Ren