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Information 2018, 9(9), 223; https://doi.org/10.3390/info9090223

The CLoTH Simulator for HTLC Payment Networks with Introductory Lightning Network Performance Results

1
Nexa Center for Internet & Society, Department of Control and Computer Engineering (DAUIN), Politecnico di Torino, 10129 Turin, Italy
2
Department of Engineering, Roma Tre University, 00154 Rome, Italy
*
Author to whom correspondence should be addressed.
Received: 31 July 2018 / Revised: 25 August 2018 / Accepted: 30 August 2018 / Published: 3 September 2018
(This article belongs to the Special Issue BlockChain and Smart Contracts)
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Abstract

The Lightning Network (LN) is one of the most promising off-chain scaling solutions for Bitcoin, as it enables off-chain payments which are not subject to the well-known blockchain scalability limit. In this work, we introduce CLoTH, a simulator for HTLC payment networks (of which LN is the best working example). It simulates input-defined payments on an input-defined HTLC network and produces performance measures in terms of payment-related statistics (such as time to complete payments and probability of payment failure). CLoTH helps to predict issues and obstacles that might emerge in the development stages of an HTLC payment network and to estimate the effects of an optimisation action before deploying it. We conducted simulations on a recent snapshot of the HTLC payment network of LN. These simulations allowed us to identify network and payments configurations for which a payment is more likely to fail than to succeed. We proposed viable solutions to avoid such configurations. View Full-Text
Keywords: lightning network; payment channel; payment network; HTLC; simulator; blockchain; blockchain scalability; bitcoin lightning network; payment channel; payment network; HTLC; simulator; blockchain; blockchain scalability; bitcoin
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Conoscenti, M.; Vetrò, A.; De Martin, J.C.; Spini, F. The CLoTH Simulator for HTLC Payment Networks with Introductory Lightning Network Performance Results. Information 2018, 9, 223.

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