When the data in a very block is encrypted and Employed in another block, the block is not inaccessible or non-readable. The hash is Employed in the next block, then its hash is used in the next, and so on, but all blocks is often go through. ا?أ?راد ا?أع?ا? ا??ط?ر?? https://binance67914.blogscribble.com/31067627/facts-about-bitcoin-revealed