As e-commerce grows, a variety of data on market is being generated. Even though the number of available customer data is increasing and the importance of the data itself and its relationship is increasing, there are still only a few cases where the market actively collects and manages data and makes important decisions. monolabs’ main product, monocode is a unique identifier-based service system that can collect and manage such data and can be used in various fields. For a secure and reliable system, all meaningful data is stored in a blockchain, which can prevent data modifications such as tampering with data by the parties who have different interests or code changes. It utilizes blockchain technology, a trust machine that is mutually trustworthy and verifiable by participants, ensuring trustworthy data for all records. Unlike existing systems that manage bar codes for existing products, monocode is to issue individual identification codes for every single product and to track from production to distribution throughout the process.