Blockchain
concept · 2008 · Digital age
A distributed ledger of blocks (Bitcoin).
Author: Satoshi Nakamoto.
Principles and materials it uses
- Public-key cryptography — uses. Transactions are signed with keys.
- Internet — uses. A peer-to-peer network.
- Hash function — uses. Blocks are linked by hashes.
Where it is used
- Cryptocurrency — is used in. Blockchain.
- Smart contract — is used in. It runs on a blockchain.
What it is a kind of
- Database — is a kind of. A blockchain is a database copied by many participants, so its records cannot be changed in secret.