Block and chain, since the word suggests, a sequence made of blocks! So we know very well what are these blocks. Blocks can be a kind of database! People who work on computers know databases perfectly! And for people who do not know, when we say in simple language, then https://johnnywnfw48260.blazingblog.com/30643636/what-is-blockсhain-technology-and-how-does-it-work