Block Chains and Cryptocurrency

A block chain is basely distributed data base, or ledger. Their history as a technology, i think, goes back 30 years. They're immutable, so pieces get added on to the block chain but things don't get deleaded. To oversee or govern bit coin, basically people running the bit coin softwere on computers all over the world. When a a trans action happens, it's appended to the blockChain.