Abstract: In the context of the digital era, data has emerged as a critical production factor, and its trading and management are crucial for promoting socioeconomic growth. This paper aims to address the crosschain transaction challenges faced by data assets on different platforms. The article presents an analysis of the transaction market and value conversion paths of data asset, and proposes a crosschain transaction model that encompasses system architecture, network structure and functional processes. The model distinguishes data providers, establishing a data asset transaction chain and a personal data authorization chain for crosschain data transactions. This improves the efficiency of data transactions and the convenience of regulation, and promotes the digital economy development. This article offers theoretical and practical support for the stable development of the data asset trading market, thereby facilitating the further advancement of the digital economy. Building on this framework, the study constructs a secure and reliable crosschain data asset trading platform that ensures the fairness and transparency of transactions while protecting the privacy and data security of participants.

Key words: data assets, digital economy, personal data, data transaction, crosschain

摘要： 在数字化时代背景下数据已成为关键生产要素，其交易和管理对促进社会经济增长至关重要.旨在解决现有数据资产所面临的非同一平台跨链交易挑战，分析了数据资产的价值转换路径和交易主体，设计了一个包含系统架构、网络结构和功能流程的跨链交易模型.该模型通过区分数据的所有者，建立资产交易链与个人授权链进行跨链数据交易，提高了数据交易的效率和监管的便利性.在此基础上通过构建一个安全、可靠的数据资产跨链交易平台，确保交易的公正性和透明度，同时保护参与者的隐私和数据安全，为数据资产交易市场的稳定发展提供理论和实践上的支持，推动数字经济的进一步发展.

关键词: 数据资产, 数字经济, 个人数据, 数据交易, 跨链