Merkle Tree

A Merkle Tree is a special structure used in cryptography where data is organized in a tree format. Each leaf, or bottom part of the tree, contains a unique code called a hash that represents a piece of data. The higher parts of the tree have hashes that combine the hashes of their child nodes. This setup helps verify the data's integrity in blockchains efficiently, as any changes in the data will affect the top hash, making it easy to check if everything is correct.