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The concept of how it works seems complicated, and it undoubtedly can be. Yet, the core concept of blockchain technology is quite simple, it is a type of database, which collects information and stores it electronically on a system. By creating a “chain” of data, the previous data which is safely saved in “blocks'' cannot be altered or removed. With the help of blockchain, the need for a third-party to handle risks related to your transactions can be eliminated. Walmart uses a blockchain distributed ledger to track and connect with all parties involved in delivering pork-related food.