Bitcoin explained·4 min read
Bitcoin address formats: Legacy, SegWit, and Taproot
Compare Bitcoin address formats: Legacy, SegWit, and Taproot. Read prefix clues, compatibility limits, and why fees depend on the transaction.
Beginner
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Bitcoin for beginners
Learn what Bitcoin is, how BTC transactions work, and why wallets, confirmations and fees matter. Start with a plain-English guide and follow the next lesson.
A route through these guides
Begin with the Bitcoin network, then follow the guides on wallets, fees and confirmation.
Follow the connected lessons ↗ Try the related practice exercise ↗23 guides for curious mindsREAD. REFLECT. TRY IT.
Bitcoin explained·4 min read
Bitcoin Confirmations Explained: 0, 1, and 6+
Learn what zero, one and later Bitcoin confirmations mean, why added blocks lower reversal risk, and why no count is a universal guarantee.
Beginner
Bitcoin explained·3 min read
Bitcoin Difficulty Adjustment Explained: Every 2,016 Blocks
Bitcoin adjusts its mining target every 2,016 blocks. Faster windows raise mining difficulty; slower windows lower it. Ten minutes is an average, not a timer.
Beginner
Bitcoin explained·4 min read
What Is Bitcoin Dust? Tiny UTXOs, Fees & Risks
Learn what Bitcoin dust means, when tiny UTXOs cost more to spend, why Core's 546-sat example is not universal, and how dusting can affect privacy.
Beginner
Bitcoin explained·3 min read
Bitcoin fees explained: the cost is part of the route
Learn why Bitcoin transaction fees can vary, what a wallet estimate means and which costs sit outside the network fee.
Beginner
Bitcoin explained·3 min read
Bitcoin Lightning Network explained: a route, not a magic switch
Learn the basic idea behind Lightning as a separate payment route and the extra assumptions a user must check.
Intermediate
Bitcoin explained·4 min read
How Many Bitcoins Will Ever Exist? The 21 Million Limit
Bitcoin's 21 million limit is rounded. See how halvings shape the subsidy rule, why whole satoshis make the exact sum lower, and how that differs from spendable supply.
Beginner
Bitcoin explained·4 min read
What Is the Bitcoin Mempool? Local Views Explained
Learn what the Bitcoin mempool is, why nodes can show different pending transactions, and what an explorer's empty result really means.
Beginner
Bitcoin explained·2 min read
Bitcoin mining explained without the hype
Understand mining as a process for proposing blocks and competing under network rules, not as a simple passive-income promise.
Beginner
Bitcoin explained·4 min read
What Is a Bitcoin Mining Pool? Shares, Payouts and Risks
Understand Bitcoin mining pools: what a share proves, how it differs from a block, how pool payouts work, and what to check before trusting an operator.
Beginner
Bitcoin explained·3 min read
What Is a Satoshi? Bitcoin Units Explained
Learn how satoshis relate to BTC, convert common amounts, and separate a Bitcoin unit from its changing cash value.
Beginner
Bitcoin explained·3 min read
Bitcoin scarcity and halving: what the words do not promise
Understand supply language and issuance changes without turning scarcity into a guaranteed price or investment conclusion.
Beginner
Bitcoin explained·4 min read
Can You Cancel a Bitcoin Transaction? RBF Explained
Bitcoin has no central cancel button. Learn what Replace-by-Fee can do to an unconfirmed transaction—and what confirmation changes.
Beginner
Bitcoin explained·3 min read
What Is a Bitcoin UTXO? Inputs, Outputs & Change
Learn how Bitcoin outputs become UTXOs, why a wallet spends whole outputs, and how payment, change, and fees fit together.
Beginner
Bitcoin explained·2 min read
Bitcoin vs Ethereum: compare jobs before comparing prices
Learn a useful Bitcoin and Ethereum comparison by separating their network purposes, account models and application assumptions.
Beginner
Bitcoin explained·2 min read
Bitcoin wallets explained: custody before convenience
Compare hosted accounts, software wallets and offline storage by asking who controls authorization and how recovery works.
Beginner
Bitcoin explained·5 min read
Can Bitcoin Be Hacked? Network, Wallet, and Exchange Risks
Can Bitcoin be hacked? Separate Bitcoin network attacks and software bugs from stolen wallet keys, exchange failures, and sidechain exploits.
Beginner
Bitcoin explained·3 min read
Does Bitcoin Have Smart Contracts? Script & Limits
Bitcoin can enforce programmable spending conditions. See how Script checks spends, what time locks do, and how it differs from general-purpose smart contracts.
Beginner
Bitcoin explained·3 min read
How Bitcoin transactions work before confirmation
Follow a Bitcoin transaction from authorization to confirmation, and learn what the public record does not establish.
Beginner
Bitcoin explained·5 min read
How to Buy Bitcoin Safely: BTC or a Bitcoin ETF?
Compare direct BTC with a Bitcoin ETF or ETP where available. Check custody, fees, withdrawals, location limits and risks before deciding.
Beginner
Bitcoin explained·3 min read
Is Bitcoin Anonymous? What Public Addresses Reveal
Bitcoin uses public addresses rather than names, but transactions are public and may be linked to people through outside information.
Beginner
Bitcoin explained·3 min read
What is Bitcoin? A plain-English starting point
Understand Bitcoin as a network, asset and public transaction record without treating the explanation as a price prediction.
Beginner
Bitcoin explained·4 min read
Who Created Bitcoin? What We Know About Satoshi Nakamoto
Bitcoin's first public paper appeared under the name Satoshi Nakamoto. Follow the early milestones and learn what they do—and do not—reveal about its creator.
Beginner
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