上海海关引入区域链和人工智能：企业在线即可完成报关单修改撤销

Core Insights - Shanghai Customs has introduced blockchain and artificial intelligence technologies to streamline the process of modifying and canceling customs declarations, significantly improving efficiency and reducing the time required for these operations [1][2]. Group 1: Technology Implementation - The integration of blockchain and AI allows for dual authentication of related legal entities through IC cards and digital identities, ensuring compliance and security in online operations [2]. - Each document undergoes authenticity verification and full traceability, ensuring that every step of the process is trustworthy and auditable [2]. Group 2: Efficiency Gains - The average time required to modify or cancel a customs declaration at Shanghai ports has been reduced from 1.5 working days to under 6 hours [1]. - Companies can now track the progress of their declaration modifications in real-time, transforming the experience into a "contactless, paperless, and predictable" process [1]. Group 3: Trade Statistics - In the first seven months of this year, Shanghai's goods trade import and export reached 2.55 trillion yuan, representing a 3.4% increase compared to the same period last year [3].