What's blockchain?

What's blockchain?

Blockchain is technology for creating permanent, secure digital recordings that don’t rely on any single person or group. Blockchains can record any information, though the first example was created to record bitcoin transactions.

Imagine the blockchain as a book of records. Each page in that book, is a block, and can record anything. Blocks are created one after the other, chained to each other creating what we know as the blockchain.

Multiple blockchain records are maintained simultaneously by a large group of unrelated individuals and their computers, making it cloud storage on steroids. Updates are seen immediately and manipulation is extremely difficult/impossible.