Ledger Combiners for Fast Settlement
Ledger Combiners for Fast Settlement
复制标题
用于快速结算的账本组合器
DOI:
10.1007/978-3-030-64375-1_12
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发表时间:
2020
期刊:
影响因子:
--
通讯作者:
Russell, Alexander
中科院分区:
文献类型:
--
作者:
Fitzi, Matthias;Gazi, Peter;Kiayias, Aggelos;Russell, Alexander
Blockchain protocols based on variations of the longest-chain rule—whether following the proof-of-work paradigm or one of its alternatives—suffer from a fundamental latency barrier. This arises from the need to collect a sufficient number of blocks on top of a transaction-bearing block to guarantee the transaction’s stability while limiting the rate at which blocks can be created in order to prevent security-threatening forks. Our main result is a black-box security-amplifying combiner based on parallel composition ofmblockchains that achieves-fold security amplification for conflict-free transactions or, equivalently,-fold reduction in latency. Our construction breaks the latency barrier to achieve, for the first time, a ledger based purely on Nakamoto longest-chain consensus guaranteeing worst-case constant-time settlement for conflict-free transactions: settlement can be accelerated to a constant multiple of block propagation time with negligible error.Operationally, our construction shows how to view any family of blockchains as a unified, virtual ledger without requiring any coordination among the chains or any new protocol metadata. Users of the system have the option to inject a transaction into a single constituent blockchain or—if they desire accelerated settlement—all of the constituent blockchains. Our presentation and proofs introduce a new formalism for reasoning about blockchains, thedynamic ledger, and articulate our constructions as transformations of dynamic ledgers that amplify security. We also illustrate the versatility of this formalism by presenting robust-combiner constructions for blockchains that can protect against complete adversarial control of a minority of a family of blockchains.
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DOI:
10.1007/978-3-030-57990-6_2
发表时间:
2020-09
期刊:
--
影响因子:
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作者:
Thomas Dinsdale-Young;Bernardo Magri;C. Matt;J. Nielsen;Daniel Tschudi
通讯作者:
Thomas Dinsdale-Young;Bernardo Magri;C. Matt;J. Nielsen;Daniel Tschudi
DOI:
10.1109/glocom.2006.467
发表时间:
2006
期刊:
IEEE Globecom 2006
影响因子:
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作者:
C. Murta;Pedro R. Torres;P. Mohapatra
通讯作者:
P. Mohapatra
DOI:
10.1007/978-3-642-00457-5_9
发表时间:
2009
期刊:
IEEE Globecom 2006
影响因子:
--
作者:
Y. Dodis;R. Impagliazzo;Ragesh Jaiswal;Valentine Kabanets
通讯作者:
Valentine Kabanets
DOI:
10.1007/978-3-642-03356-8_21
发表时间:
2009
期刊:
IACR Cryptol. ePrint Arch.
影响因子:
--
作者:
U. Maurer;Stefano Tessaro
通讯作者:
Stefano Tessaro
DOI:
--
发表时间:
2020
期刊:
IACR Cryptology ePrint Archive
影响因子:
--
作者:
Matthias Fitzi;Peter Gazi;A. Kiayias;A. Russell
通讯作者:
A. Russell