标题： 可扩展的数据公证利用混合分布式账本技术 显示英文标题

标题： Scalable Data Notarization Leveraging Hybrid DLTs

摘要： 公证是一种通过在审计期间确保数据的认证来增强数据管理的程序，从而增加对审计数据的信任。 区块链经常被用作安全、不可变和透明的存储，有助于使数据公证程序更加有效和可信。 文献和商业解决方案中已经提出了几种基于区块链的数据公证协议。 然而，这些实现，无论是在公共还是私有区块链上，都面临固有的挑战：公共区块链上的高费用和私有平台上的信任问题，限制了区块链在数据公证中的采用或迫使进行多项权衡。 在本文中，我们探讨了混合区块链架构在数据公证中的使用，重点研究可扩展性问题。 通过分析一个实际用例，即供应链中的产品护照数据公证，我们提出了一种新方法，利用一种数据结构，以高效管理在公证大量数据时涉及的存储占用和成本方面的权衡。 显示英文摘要

摘要： Notarization is a procedure that enhance data management by ensuring the authentication of data during audits, thereby increasing trust in the audited data. Blockchain is frequently used as a secure, immutable, and transparent storage, contributing to make data notarization procedures more effective and trustable. Several blockchain-based data notarization protocols have been proposed in literature and commercial solutions. However, these implementations, whether on public or private blockchains, face inherent challenges: high fees on public blockchains and trust issues on private platforms, limiting the adoption of blockchains for data notarization or forcing several trade-offs. In this paper, we explore the use of hybrid blockchain architectures for data notarization, with a focus on scalability issues. Through the analysis of a real-world use case, the data notarization of product passports in supply chains, we propose a novel approach utilizing a data structure designed to efficiently manage the trade-offs in terms of storage occupation and costs involved in notarizing a large collection of data.