Bitcoin Basics

Foundational Bitcoin concepts for new self-custody users, from what Bitcoin is to why private keys matter.

What is Bitcoin?

Bitcoin is a peer-to-peer electronic cash system that operates without a central authority. Transactions are verified by a distributed network and recorded permanently on a public ledger. No institution can freeze accounts, reverse confirmed transactions, or issue coins beyond the fixed supply of 21 million.

How Does a Bitcoin Transaction Work?

Bitcoin transactions consume amounts you control and create new ones. Learn how inputs, outputs, fees, and confirmation work.

What are Private Keys and Public Keys?

Private keys prove ownership. Public keys enable verification. Learn how the Bitcoin key pair works and why the private key must stay secret.

What is a Bitcoin Wallet?

Bitcoin wallets store private keys, not bitcoin. Learn how they work and the difference between custodial and self-custodial arrangements.

What Gives Bitcoin Value?

Bitcoin derives value from its monetary properties: a fixed supply, no issuing authority, and verification that requires no trust.