A blockchain network such as Neblio is a decentralized peer-to-peer network of nodes that exchange information in the form of transactions; storing those transactions in an immutable distributed ledger. All nodes have a full copy of the ledger (known as the blockchain, due to being made of individual blocks) at all times. A node that would like to record information in the ledger first broadcasts a transaction containing the information to the network where it is relayed to all other nodes. One node then compiles all new available transactions on the network into a block that is added to the blockchain. Once a block is stored on the blockchain, it and all of the transactions contained within it are immutable, meaning that the transactions cannot ever be altered in any way. When information on the ledger needs to be updated, as common with database systems, a new transaction is simply added to the ledger with the new information. However, the original information that was stored in the ledger remains intact and verifiable in a previous block for the entire life of the blockchain.