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Home » Bitcoin-NG: A Scalable Blockchain Protocol
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Bitcoin-NG: A Scalable Blockchain Protocol

Authors: 

Ittay Eyal, Adem Efe Gencer, Emin Gün Sirer, and Robbert van Renesse, Cornell University

Abstract: 

Cryptocurrencies, based on and led by Bitcoin, have shown promise as infrastructure for pseudonymous online payments, cheap remittance, trustless digital asset exchange, and smart contracts. However, Bitcoin-derived blockchain protocols have inherent scalability limits that trade off between throughput and latency, which withhold the realization of this potential.

This paper presents Bitcoin-NG (Next Generation), a new blockchain protocol designed to scale. Bitcoin-NG is a Byzantine fault tolerant blockchain protocol that is robust to extreme churn and shares the same trust model as Bitcoin.

In addition to Bitcoin-NG, we introduce several novel metrics of interest in quantifying the security and efficiency of Bitcoin-like blockchain protocols. We implement Bitcoin-NG and perform large-scale experiments at 15% the size of the operational Bitcoin system, using unchanged clients of both protocols. These experiments demonstrate that Bitcoin-NG scales optimally, with bandwidth limited only by the capacity of the individual nodes and latency limited only by the propagation time of the network.

Ittay Eyal, Cornell University

Adem Efe Gencer, Cornell University

Emin Gün Sirer, Cornell University

Robbert van Renesse, Cornell University

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BibTeX
@inproceedings {194906,
author = {Ittay Eyal and Adem Efe Gencer and Emin Gun Sirer and Robbert Van Renesse},
title = {{Bitcoin-NG}: A Scalable Blockchain Protocol},
booktitle = {13th USENIX Symposium on Networked Systems Design and Implementation (NSDI 16)},
year = {2016},
isbn = {978-1-931971-29-4},
address = {Santa Clara, CA},
pages = {45--59},
url = {https://www.usenix.org/conference/nsdi16/technical-sessions/presentation/eyal},
publisher = {USENIX Association},
month = mar,
}
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