Abstract: To address the issue of low system integration and resource sharing levels in existing shipbuilding enterprises, which leads to difficulties in querying and tracing process and component information during actual production, a shipbuilding identification information integration and blockchain traceability system is proposed, based on the practical traceability requirements of shipbuilding. A comprehensive information identification system based on the production process is designed for the shipbuilding scenario to achieve unified identification of construction information. Blockchain technology is used for centralized management of construction data, and a fast blockchain-based keyword query traceability mechanism is introduced to meet the traceability needs of shipbuilding. This mechanism locates the last relevant block through an auxiliary database and utilizes the category keyword field in the block header to enable jump queries between blocks. Experimental results demonstrate that the system accurately traces shipbuilding information and significantly improves query traceability performance, with an average performance improvement of 2. 07 times. 

Key words: identification system, blockchain, quality traceability, ship construction, keyword search