Author(s): Amal Abdulbaqi Maryoosh*, Ahmed Abd Ali Abdulkadhim and Muntaha Abdulzahra Hatem
Block chain is a technology for securely storing data in a manner that makes system changes or hacks impossible or difficult. Numerous organizations have adopted this technology, which utilizes a peer-to-peer distributed network. Using a decentralized peer-to-peer network to operate. A block chain is a collection of linked computer systems that operate as a distributed ledger of transactions. Every new transaction that happens on the block chain is copied to each participant's ledger, and each block on the chain is made up of numerous transactions. This paper aims to explain block chain technology, including its uses and difficulties.