Towards a Formal Foundation for Blockchain Rollups

• URL: http://arxiv.org/abs/2406.16219v1
• Date: Sun, 23 Jun 2024 21:12:19 GMT
• Title: Towards a Formal Foundation for Blockchain Rollups
• Authors: Stefanos Chaliasos, Denis Firsov, Benjamin Livshits,
• Abstract summary: ZK-Rollups aim to address challenges by processing transactions off-chain and validating them on the main chain. This work presents a formal analysis using the Alloy specification language to examine and design key Layer 2 functionalities. We propose enhanced models to strengthen security and censorship resistance, setting new standards for the security of rollups.
• Score: 9.760484165522005
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Blockchains like Bitcoin and Ethereum have revolutionized digital transactions, yet scalability issues persist. Layer 2 solutions, such as validity proof Rollups (ZK-Rollups), aim to address these challenges by processing transactions off-chain and validating them on the main chain. However, concerns remain about security and censorship resistance, particularly regarding centralized control in Layer 2 and inadequate mechanisms for enforcing these properties through Layer 1 contracts. This work presents a formal analysis using the Alloy specification language to examine and design key Layer 2 functionalities, including forced transaction queues, safe blacklisting, and upgradeability. Through this analysis, we identify potential vulnerabilities in current mechanisms and propose enhanced models to strengthen security and censorship resistance, setting new standards for the security of rollups.

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