VORTEX: Real-Time Off-Chain Payments and Cross-Chain Swaps for Cryptocurrencies

• URL: http://arxiv.org/abs/2403.15191v3
• Date: Wed, 5 Jun 2024 20:57:09 GMT
• Title: VORTEX: Real-Time Off-Chain Payments and Cross-Chain Swaps for Cryptocurrencies
• Authors: Di Wu, Jian Liu, Zhengwei Hou, Wu Wen, Kui Ren,
• Abstract summary: We present VERTEX, a TEE-based layer-2 solution that tackles two crucial challenges in the realm of cryptocurrencies. It allows a payer to make direct payments to anyone without requiring any on-chain relationship or intermediary channels. It is the first known solution that enables real-time cross-chain swaps without relying on a central server.
• Score: 14.203351200435575
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: In this paper, we present VERTEX, a TEE-based layer-2 solution that tackles two crucial challenges in the realm of cryptocurrencies: off-chain payments and cross-chain swaps. It offers three notable features: - Channel-free off-chain payments: it allows a payer to make direct payments to anyone without requiring any on-chain relationship or intermediary channels. - Real-time yet decentralized cross-chain swaps: it is the first known solution that enables real-time cross-chain swaps without relying on a central server. This novel feature is made possible through a ground-breaking fair exchange protocol. - TEE crash-tolerance: it offers two solutions to handle TEE crashes, one of which involves an innovative application of time-lock puzzles in this context. We evaluate ECHO on a network consists of 1000 nodes and the evaluation results show that ECHO can achieve 7000 TPS

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