💎 Bitcoin is a form of electronic money: he has no physical form.
It is a cryptocurrency - digital, decentralised currency that uses cryptography for security and electronic money units. It is traded over a computer network and has some unique properties: There is no central point of control (there are no "banks"). It runs on a global network with thousands of nodes.
🖇 What's a node, Châtaigne?
It is a machine within a network, such as a computer or other device, that executes transactions.
These transactions, so that they do not happen in duplicate for example, are recorded on a database: it is the Bitcoin blockchain, a database of financial transactions which is constantly enriched as new transactions or "blocks" are added to it, thus forming a continuous and public chain of data.
Châtaigne.
