' The blockchain is a global and decentralized ledger that stores information about a transaction and also verifies the data'
it batches up data into a BLOCK of data, gets the community to verify the data and specialised equipment to make an identifier of that block hard to replicate and then puts the identifier of the previous block into the next BLOCK to CHAIN them together
to such an extent that no single person can simply edit a small piece of existing data because that editors version wont match the chain of blocks everyone else has