Blockchain (how it works)
1. Chain of blocks that contains information (e.g., transactions)
2. Distributed ledger open to everyone
3. Multiple parties (peers) share it by keeping an identical copy
4. All participants must give approval to the new recording = new block
5. Each block contains: Data, Hash - unique cryptographic identifier = a fingerprint of a block, The hash of the predecessor block
6. New Block is concatenated with prior block
7. Hashing and the proof-of-work make the blockchain secure
8. Every recording uses private cryptographic key or digital signature
9. The process is repeated over and over creating a 'block chain'