Auditable Ledger Snapshot for Non-Repudiable Cross-Blockchain Communication

• URL: http://arxiv.org/abs/2511.16560v1
• Date: Thu, 20 Nov 2025 17:13:06 GMT
• Title: Auditable Ledger Snapshot for Non-Repudiable Cross-Blockchain Communication
• Authors: Tirthankar Sengupta, Bishakh Chandra Ghosh, Sandip Chakraborty, Shamik Sural,
• Abstract summary: This paper introduces InterSnap, a novel blockchain snapshot archival methodology.<n>InterSnap enables auditability of crossblockchain transactions, enforcing non-repudiation.<n>We establish that InterSnap can recover from malicious attacks while preserving crosschain transaction receipts.
• Score: 3.8828296134289544
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Blockchain interoperability is increasingly recognized as the centerpiece for robust interactions among decentralized services. Blockchain ledgers are generally tamper-proof and thus enforce non-repudiation for transactions recorded within the same network. However, such a guarantee does not hold for cross-blockchain transactions. When disruptions occur due to malicious activities or system failures within one blockchain network, foreign networks can take advantage by denying legitimate claims or mounting fraudulent liabilities against the defenseless network. In response, this paper introduces InterSnap, a novel blockchain snapshot archival methodology, for enabling auditability of crossblockchain transactions, enforcing non-repudiation. InterSnap introduces cross-chain transaction receipts that ensure their irrefutability. Snapshots of ledger data along with these receipts are utilized as non-repudiable proof of bilateral agreements among different networks. InterSnap enhances system resilience through a distributed snapshot generation process, need-based snapshot scheduling process, and archival storage and sharing via decentralized platforms. Through a prototype implementation based on Hyperledger Fabric, we conducted experiments using on-premise machines, AWS public cloud instances, as well as a private cloud infrastructure. We establish that InterSnap can recover from malicious attacks while preserving crosschain transaction receipts. Additionally, our proposed solution demonstrates adaptability to increasing loads while securely transferring snapshot archives with minimal overhead.

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