Block and chain, as the word suggests, a chain made of blocks! So we know what are these blocks. Blocks are a kind of database! People who focus on computers know databases perfectly! And for those that do not know, whenever we say in simple language, then this database is https://www.maanation.com/post/358020_block-and-chain-since-the-word-suggests-a-sequence-made-of-blocks-so-we-determin.html