KNOWLEDGE LIBRARY

Understand Bitcoin one concrete question at a time

Each page solves one problem: answer first, then mechanism, boundaries, and primary sources. No prices, picks, or exchange referrals.

10 essential questions

What exactly is Bitcoin?

Understand Bitcoin as public rules and a peer-to-peer network, without finance or programming jargon.

Digital information can be copied. Learn how the network recognizes only one valid spend.

Learn what nodes, miners, and wallets each do—and why they are not the same role.

Understand the 21 million limit through block subsidies and halvings rather than treating it as a slogan.

Learn why miners try hashes and how mining helps order and protect transaction history.

See what power developers, miners, nodes, wallets, and users each have—and why no role controls the network alone.

Separate the Bitcoin system from its blockchain data structure instead of mistaking one component for the whole.

Understand private keys, public keys, addresses, and signatures—and why a private key must never be shared.

A node is not a mining machine or an account. It is software that receives, validates, and relays Bitcoin data under local rules.

Follow a transaction from broadcast to a block and then through accumulating work to understand confirmations.