Bitcoin Fundamentals
What Is Bitcoin?
The definitive beginner answer: what Bitcoin is, how it works, and why it matters.
What Is Bitcoin Mining?
How new bitcoin enters circulation and how the network stays secure.
How Does Blockchain Work?
The immutable ledger that makes Bitcoin possible - explained clearly.
What Is Proof of Work?
The consensus mechanism that secures Bitcoin and why it works.
What Is the Bitcoin Halving?
How Bitcoin's supply schedule works and why halvings matter.
How Many Bitcoins Are There?
The 21 million cap, current supply, and why scarcity is a feature.
Bitcoin vs. Blockchain
Understanding what makes Bitcoin unique - not just the tech, but why it matters.
Who Created Bitcoin?
Satoshi Nakamoto, the 2008 whitepaper, and why the mystery matters.
What Is the Bitcoin Whitepaper?
The 9-page document that started it all - and what it actually says.
Owning Your Bitcoin
What Is a Bitcoin Wallet?
Hot wallets, cold wallets, and how to choose the right one.
What Is a Hardware Wallet?
The gold standard for securing your bitcoin - how it works and why you need one.
What Is a Private Key?
The cryptographic key that proves you own bitcoin - and why losing it means losing everything.
What Is a Seed Phrase?
The 12-24 words that back up your entire wallet - and how to protect them.
What Is Self-Custody?
Why "not your keys, not your coins" is the most important rule in Bitcoin.
What Is a Bitcoin Address?
Where bitcoin gets sent - address types, privacy, and how addresses are generated.
What Is Multisig?
How multi-signature wallets eliminate single points of failure.
Can Bitcoin Be Hacked?
The honest answer: what has and hasn't been compromised - and how to protect yourself.
How Bitcoin Moves
How Do Bitcoin Transactions Work?
From signing to confirmation - the full lifecycle of a Bitcoin transaction.
What Is a UTXO?
The unspent transaction output model - how Bitcoin tracks balances.
What Is a Mempool?
The waiting room for unconfirmed transactions - and why it matters for fees.
What Is a Bitcoin Node?
How full nodes enforce the rules and why running one matters.
What Is a Satoshi?
Bitcoin's smallest unit - and why denominating in sats matters.
What Is a Bitcoin Address?
Legacy, P2SH, and native SegWit - address types explained.
Beyond the Base Layer
What Is the Lightning Network?
Instant, near-free Bitcoin payments - how channels work and why it scales.
What Is Bitcoin Layer 2?
Protocols built on top of Bitcoin - what they are and why they exist.
What Is On-Chain vs. Off-Chain?
When transactions settle on the blockchain vs. off it - tradeoffs explained.
What Is SegWit?
The 2017 upgrade that fixed transaction malleability and enabled Lightning.
Going Deeper
What Is a Bitcoin Fork?
Soft forks, hard forks, and what actually happened with Bitcoin Cash.
What Is a Block Reward?
How miners get paid, how rewards decline, and the future fee market.
How Does Mining Difficulty Work?
Why Bitcoin always targets a 10-minute block time - and how it self-corrects.
What Is a 51% Attack?
What an attacker with majority hashrate can and cannot do.
What Is Bitcoin Dominance?
Bitcoin's share of total crypto market cap - and what it signals.
What Is the Genesis Block?
Block zero - Satoshi's timestamp, the embedded message, and its significance.
What Is Byzantine Fault Tolerance?
The distributed systems problem Bitcoin solved - explained without jargon.
Learn Bitcoin The Visual Way
Bitcoin From Scratch is the only Bitcoin fundamentals course built entirely with 3D animation. 34 lessons, zero jargon, every concept from first principles.
Start Bitcoin From Scratch - $97