Blocking (emphasis on "e") is a technology on which the creation of crypto-currencies , such as bitcoyne, is based. The English word "blockchain" is usually translated as "chain of transaction blocks". In this chain, each block is a set of information about transactions with the currency and is used to conduct transactions to transfer currency from the purse to the purse. In the database, all blocks of committed transactions are stored, and in each such block there is a pointer to the previous block, which leads to the appearance of a "chain".
The block is based on a cryptographic algorithm, where each block stores the hash sum of the previous block, which provides protection against falsification of blocks, and also makes it possible to verify the authenticity of each block. Blocking technology allows each experienced programmer to create his own crypto currency and, if lucky, to become fabulously rich.