Algorithmic Channel Design

Authors Georgia Avarikioti, Yuyi Wang, Roger Wattenhofer

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Author Details

Georgia Avarikioti
  • ETH Zurich, Switzerland
Yuyi Wang
  • ETH Zurich, Switzerland
Roger Wattenhofer
  • ETH Zurich, Switzerland

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Georgia Avarikioti, Yuyi Wang, and Roger Wattenhofer. Algorithmic Channel Design. In 29th International Symposium on Algorithms and Computation (ISAAC 2018). Leibniz International Proceedings in Informatics (LIPIcs), Volume 123, pp. 16:1-16:12, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2018)


Payment networks, also known as channels, are a most promising solution to the throughput problem of cryptocurrencies. In this paper we study the design of capital-efficient payment networks, offline as well as online variants. We want to know how to compute an efficient payment network topology, how capital should be assigned to the individual edges, and how to decide which transactions to accept. Towards this end, we present a flurry of interesting results, basic but generally applicable insights on the one hand, and hardness results and approximation algorithms on the other hand.

Subject Classification

ACM Subject Classification
  • Theory of computation → Graph algorithms analysis
  • blockchain
  • payment channels
  • layer 2 solution
  • network design
  • payment hubs
  • routing


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