Block and chain, because the word suggests, a chain made of blocks! So we determine what are these blocks. Blocks can be a kind of database! People who work on computers know databases very well! And for people who do not know, as we say in simple language, then your https://www.maanation.com/post/358020_block-and-chain-since-the-word-suggests-a-sequence-made-of-blocks-so-we-determin.html