Paper Info
Title
An Efficient Micropayment Channel On Ethereum
Abstract
Blockchain protocols for cryptocurrencies offer secure payment transactions, yet their throughput pales in comparison to centralized payment systems such as VISA. Moreover, transactions incur fees that relatively hinder the adoption of cryptocurrencies for simple daily payments. Micropayment channels are second layer protocols that allow efficient and nearly unlimited number of payments between parties at the cost of only two transactions, one to initiate it and the other one to close it. Typically, the de-facto approach for micropayment channels on Ethereum is to utilize digital signatures which incur a constant gas cost but still relatively high due to expensive elliptic curve operations. Recently, ElSheikh et al. have proposed a protocol that utilizes hash chain which scales linearly with the channel capacity and has a lower cost compared to the digital signature based channel up to a capacity of 1000 micropayments. In this paper, we improve even more and propose a protocol that scales logarithmically with the channel capacity. Furthermore, by utilizing a variant of Merkle tree, our protocol does not require the payer to lock the entire balance at the channel creation which is an intrinsic limitation with the current alternatives. To assess the efficiency of our protocol, we carried out a number of experiments, and the results prove a positive efficiency and an overall low cost. Finally, we release the source code for prototype on Github (https://github.com/HSG88/Payment-Channel).
Year
DOI
Venue
2019
10.1007/978-3-030-31500-9_13
DATA PRIVACY MANAGEMENT, CRYPTOCURRENCIES AND BLOCKCHAIN TECHNOLOGY
Keywords
Field
DocType
Micropayment channel, Ethereum, Merkle tree
Computer science,Computer network,Communication channel,Micropayment
Conference
Volume
ISSN
Citations 
11737
0302-9743
0
PageRank 
References 
Authors
0.34
0
3
Name
Order
Citations
PageRank
Hisham S. Galal121.74
Muhammad ElSheikh213.41
Amr M. Youssef3178.47