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Payment protocols developed to realize off-chain transactions in Payment channel network (PCN) assumes the underlying routing algorithm transfers the payment via a single path. However, a path may not have sufficient capacity to route a…

Cryptography and Security · Computer Science 2022-02-08 Subhra Mazumdar , Sushmita Ruj

Payment channel networks (PCNs) are a promising technology that alleviates blockchain scalability by shifting the transaction load from the blockchain to the PCN. Nevertheless, the network topology has to be carefully designed to maximise…

Distributed, Parallel, and Cluster Computing · Computer Science 2025-08-21 Krishnendu Chatterjee , Jan Matyáš Křišťan , Stefan Schmid , Jakub Svoboda , Michelle Yeo

Blockchain protocols are inherently limited in transaction throughput and latency. Recent efforts to address performance and scale blockchains have focused on off-chain payment channels. While such channels can achieve low latency and high…

Cryptography and Security · Computer Science 2017-03-09 Joshua Lind , Ittay Eyal , Peter Pietzuch , Emin Gün Sirer

Payment channel networks (PCNs) are a promising approach to making cryptocurrency transactions faster and more scalable. At their core, PCNs bypass the blockchain by routing transactions through intermediary channels. However, a channel can…

Data Structures and Algorithms · Computer Science 2026-05-19 Marcin Bienkowski , Julien Dallot , Dominik Danelski , Maciej Pacut , Stefan Schmid

As an append-only distributed database, blockchain is utilized in a vast variety of applications including the cryptocurrency and Internet-of-Things (IoT). The existing blockchain solutions show downsides in communication and storage…

Distributed, Parallel, and Cluster Computing · Computer Science 2021-09-02 Yahya Hassanzadeh-Nazarabadi , Alptekin Küpçü , Öznur Özkasap

Existing permissionless blockchain solutions rely on peer-to-peer propagation mechanisms, where nodes in a network transfer transaction they received to their neighbors. Unfortunately, there is no explicit incentive for such transaction…

Cryptography and Security · Computer Science 2018-06-15 Oguzhan Ersoy , Zhijie Ren , Zekeriya Erkin , Reginald L. Lagendijk

Payment channel networks (PCNs) enhance the scalability of blockchains by allowing parties to conduct transactions off-chain, i.e, without broadcasting every transaction to all blockchain participants. To conduct transactions, a sender and…

Cryptography and Security · Computer Science 2022-08-05 Oğuzhan Ersoy , Jérémie Decouchant , Satwik Prabhu Kimble , Stefanie Roos

Payment channel networks (PCNs) are a promising solution to address blockchain scalability and throughput challenges, However, the security of PCNs and their vulnerability to attacks are not sufficiently studied. In this paper, we introduce…

Cryptography and Security · Computer Science 2025-06-24 Mohammed Ababneh , Kartick Kolachala , Roopa Vishwanathan

The automotive industry has seen an increased need for connectivity, both as a result of the advent of autonomous driving and the rise of connected cars and truck fleets. This shift has led to issues such as trusted coordination and a wider…

Cryptography and Security · Computer Science 2019-07-08 Parth Singhal , Siddharth Masih

The Bitcoin Lightning Network is a layer 2 protocol designed to facilitate fast and inexpensive Bitcoin transactions. It operates by establishing channels between users, where Bitcoin is locked and transactions are conducted off-chain until…

Cryptography and Security · Computer Science 2024-07-12 Rainer Feichtinger , Florian Grötschla , Lioba Heimbach , Roger Wattenhofer

Offchain networks emerge as a promising solution to address the scalability challenge of blockchain. Participants directly make payments through a network of payment channels without the overhead of committing onchain transactions. Routing…

Networking and Internet Architecture · Computer Science 2019-06-12 Peng Wang , Hong Xu , Xin Jin , Tao Wang

The Lightning Network is a peer-to-peer network designed to address Bitcoin's scalability challenges, facilitating rapid, cost-effective, and instantaneous transactions through bidirectional, blockchain-backed payment channels among network…

Networking and Internet Architecture · Computer Science 2025-02-06 Sindura Saraswathi , Christian Kümmerle

A major challenge in blockchain sharding protocols is that more than 95% transactions are cross-shard. Not only those cross-shard transactions degrade the system throughput but also double the confirmation time, and exhaust an already…

Cryptography and Security · Computer Science 2021-10-19 Lan N. Nguyen , Truc Nguyen , Thang N. Dinh , My T. Thai

Payment channels allow transactions between participants of the blockchain to be executed securely off-chain, and thus provide a promising solution for the scalability problem of popular blockchains. We study the online network design…

Data Structures and Algorithms · Computer Science 2019-08-02 Georgia Avarikioti , Kenan Besic , Yuyi Wang , Roger Wattenhofer

Sharding is a promising technique for addressing the scalability issues of blockchain, and this technique is especially important for IoT, edge, or mobile computing. It divides the $n$ participating nodes into $s$ disjoint groups called…

Distributed, Parallel, and Cluster Computing · Computer Science 2025-01-20 Ramesh Adhikari , Costas Busch , Miroslav Popovic

While many researchers adopt a sharding approach to design scaling blockchains, few works have studied the transaction placement problem incurred by sharding protocols. The widely-used hashing placement algorithm renders an overwhelming…

Distributed, Parallel, and Cluster Computing · Computer Science 2022-06-13 Liuyang Ren , Paul A. S. Ward

Payment channel is a protocol which allows cryptocurrency users to route multiple transactions through network without committing them to the main blockchain network (mainnet). This ability makes them the most prominent solution to…

Computer Science and Game Theory · Computer Science 2021-07-08 MohammadAmin Fazli , Seyed Moeen Nehzati , MohammadAmin Salarkia

A Content Delivery Network (CDN) is a powerful system of distributed caching servers that aims to accelerate content delivery, like high-definition video, IoT applications, and ultra-low-latency services, efficiently and with fast velocity.…

Distributed, Parallel, and Cluster Computing · Computer Science 2024-12-13 Md Nurul Absur , Sourya Saha , Sifat Nawrin Nova , Kazi Fahim Ahmad Nasif , Md Rahat Ul Nasib

Payment channel networks (PCNs) such as the Lightning Network offer an appealing solution to the scalability problem faced by many cryptocurrencies operating on a blockchain such as Bitcoin. However, PCNs also inherit the stringent…

Cryptography and Security · Computer Science 2022-01-20 Philipp Zabka , Klaus-Tycho Foerster , Stefan Schmid , Christian Decker

As an append-only distributed database, blockchain is utilized in a vast variety of applications including the cryptocurrency and Internet-of-Things (IoT). The existing blockchain solutions have downsides in communication and storage…

Distributed, Parallel, and Cluster Computing · Computer Science 2020-12-22 Yahya Hassanzadeh-Nazarabadi , Alptekin Küpçü , Öznur Özkasap