back to lessons
$ ~/learn/what-is-bitcoin cat
6 min read
// 01 · fundamentals

What is Bitcoin?

The first neutral, borderless, non-sovereign digital money — and the network that made it possible.

> The idea

Bitcoin is a peer-to-peer electronic cash system introduced in 2008 by the pseudonymous Satoshi Nakamoto. It lets anyone transfer value across the internet without needing a bank, government, or trusted intermediary. The supply is capped at 21 million coins — a hard monetary rule enforced by software running on thousands of independent computers.

> How it works

Every ~10 minutes, a new 'block' of transactions is added to a shared public ledger called the blockchain. Miners around the world race to produce these blocks by solving a cryptographic puzzle (proof-of-work). The winner is rewarded with newly issued BTC plus transaction fees. This process secures the ledger without any central operator.

> Why it matters

Bitcoin proved that digital scarcity is possible. For the first time, an asset can be transferred over the internet without the sender still holding a copy. That property is the basis of every cryptocurrency and Web3 protocol that followed.

> Common misconceptions

Bitcoin is not anonymous — it's pseudonymous, and every transaction is public. It's not backed by a company or government. And it's not fast for retail payments by design — it prioritizes settlement finality and censorship resistance over throughput.