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Home / 2026, Articles

Learn About Bitcoin (FAQ)

11 Sept 2020 · by Vlad Costea · 20 min read · 2 comments
Published at block 647,776
Bitcoin logo over a bookshelf with a learn about Bitcoin headline

Bitcoin is a stateless, open-source, decentralized, permissionless, uncensorable, and unconfiscatable internet currency. Those words get thrown around a lot. This page is for the questions people actually type into a search bar: what is Bitcoin, is Bitcoin a scam or a Ponzi, how many bitcoins are there, what is the Lightning Network, what are Bitcoin forks, how do CoinJoins work, why run a node, what about CBDCs.

This is not a corporate onboarding brochure and it is not hopium. It is fed by seven-plus years of the Bitcoin Takeover podcast: 372 interviews with cypherpunks, protocol developers, economists, human-rights advocates, heretics, and the occasional villain. Answers below lean on that work. Where I can, I link the episode or article on bitcoin-takeover.com. Timestamps appear only when they come from published show notes.

Recent seasons also produced two magazines you will see cited often: Breaking FUD (fear, uncertainty, and doubt, dismantled with receipts) and BTCTKVR: Forks! (soft forks, hard forks, Bitcoin Cash, Bitcoin SV, Bitcoin Gold, eCash XEC and ECX, the BLAKE2b fork, Zcash, and a long quote hub). If a question smells like Twitter FUD or fork lore, start there.

The list will keep growing. Leave a comment or email me. Translations still matter for freedom: bitcointakeover@protonmail.com.

Full archive: bitcoin-takeover.com · Audio player / 372 episodes

Origins, Satoshi, and the cypherpunks

Was Bitcoin created by the CIA or the NSA?

No. Treating Bitcoin as an occult elite project is lazy, and it insults the people who actually built the intellectual stack. Bitcoin sits in a cypherpunk and libertarian tradition that spent decades fighting surveillance money and trusted third parties, not inventing a new leash for banks.

Go deeper:

Who invented Bitcoin?

Philosophically and technically, Bitcoin is an invention of cypherpunk culture. David Chaum, Nick Szabo, Wei Dai, Adam Back, Tim May, Hal Finney and others paved the road. Satoshi Nakamoto assembled the pieces into a living network, then left.

Satoshi was not a time-traveling alien AI, and he was not a polished C++ shop either. The early code was rough. The idea was the breakthrough. Privacy was part of the original aspiration (early draft language around “ecash”; forum posts about zero-knowledge and group signatures). What we got on the base layer is still a pseudonymous ledger that needs better tools.

Go deeper:

Does it matter who Satoshi Nakamoto is?

No. Bitcoin is a scarce digital commodity whose source code and circulation are open and transparent. Building a cult around the creator defeats the invention’s purpose. What matters is whether you can verify the rules, run a node, and hold keys, not whether a court drama or a YouTube detective finally “solves” the pseudonym.

Go deeper:

What is Bitcoin, and why use it?

What is Bitcoin?

Bitcoin is open-source software that creates a peer-to-peer monetary network. Nobody issues your coins from a head office. Nobody can freeze a UTXO by phone call. Consensus rules are enforced by people who run validating nodes and by miners who burn energy to extend the chain. That combination (scarce issuance, public verification, self-custody) is the product.

If you only ever buy an IOU on an exchange, you are using a brokerage product that happens to be denominated in bitcoin. The network is still underneath. The FAQ below assumes you care about the network.

Why use Bitcoin at all?

Because it is provably scarce, transparent, non-governmental money. Like dollars, gold, or stocks, it can be used to transact, store value, and allocate capital. Unlike those, it can raise the cost of arbitrary confiscation, complicate financial surveillance, and let you cross a border with a hardware wallet or twelve words you memorized.

It is an instrument for rights your government sometimes chooses to ignore (see Article 17 of the Universal Declaration of Human Rights). Number-go-up is a side effect, not the mission statement.

Go deeper:

Bitcoin and Austrian economics

Bitcoin has deep ties to the Austrian school: limited supply, hard-money instincts, and an improvement on gold’s inconveniences (heavy, hard to verify, hard to move). Treat economics as more than Twitter memes, and be wary of cargo-cult “Austrian” price models.

Go deeper:

Institutions vs users who need it

We are not sitting around waiting for institutions to bless Bitcoin so the price pumps. Bitcoin was invented as useful money for people who need permissionless settlement: the unbanked, the surveilled, the capital-controlled. Not as a VIP lounge for asset managers. Institutions can arrive. They do not own the protocol.

How many bitcoins? Supply, sats, verification

How many bitcoins are there?

As of September 2026, roughly ~20.1 million BTC have been mined. You can verify live on any block explorer or, better, on your own node. The schedule tops out near 21 million, with the last sats issued around 2140. One of Bitcoin’s most important features is that you can always verify the supply yourself. Do not take a FAQ’s word for it.

*Footnote (dated): public supply cross-check on 2026-09-23 showed roughly 20.09M via a common explorer totalbc endpoint. That number ages every block. Re-check.

What is a satoshi? Bitcoins vs sats

1 bitcoin = 100,000,000 satoshis. As the unit price rises, sats become the practical unit of account for everyday amounts and Lightning payments. Learn to think in sats early. It ages better than clinging to “whole coins.”

Money printer go brrr?

From a financial angle, Bitcoin became a hedge against inflationary state money. Buying BTC is often a bet against monetary debasement and institutional rot. Whether you quote Tudor Jones, corporate treasuries, or your cousin in an inflation spiral, the underlying claim is scarcity vs discretionary issuance.

At some point, pricing everything forever in USD/EUR/JPY/CNY may look as provincial as it sounds. Until then, verify supply and custody. Do not outsource judgment to influencers.

Breaking FUD: common objections answered

This section is deliberately blunt. Most “Bitcoin is dead / scam / boiling the oceans” talking points recycle the same half-truths. The Breaking FUD magazine and the ChatGPT FUD series exist because those half-truths keep getting industrial distribution. Fear of something new is normal. Letting a press release or a chatbot finish your thinking for you is optional.

For the personal version of how FUD works on a human brain (mine), start with Breaking FUD – Embracing Bitcoin.

Is Bitcoin a scam, Ponzi, or pyramid scheme?

No. There is no central owner promising you returns from later entrants. Anyone can mine (with ASICs, competitively), run a full node, and transact without permission. Ponzis have leaders, hierarchies, and exit fantasies. Bitcoin is a decentralized monetary network: messy, adversarial, and open.

Scammers use Bitcoin the way they use dollars and bank wires. That does not make the dollar a pyramid. If someone guarantees you a fixed monthly yield for “parking” coins with them, walk away. The protocol never made that promise.

Does Bitcoin waste energy / destroy the environment?

Bitcoin’s Proof of Work burns electricity on purpose. That cost is how the ledger gets thermodynamic finality without a trusted clerk. Calling that “waste” assumes the product (censorship-resistant settlement and scarce issuance) is worthless. If you grant that the product has value, the debate becomes comparative and empirical: how much energy, from which sources, relative to what else humanity already spends kilowatts on.

The short version of the longer essay: mining is a competitive market that hunts cheap (often stranded or otherwise hard-to-store) power; difficulty adjusts; no single jurisdiction owns the hash forever; Proof of Stake substitutes capital concentration for energy cost and does not magically produce fairer money.

Go deeper:

Is Bitcoin only for criminals?

Transparent ledgers are often friendlier to investigators than cash. Chain analysis companies exist for a reason. Media “crypto for criminals” narratives aged into irony: analysts and law enforcement frequently prefer open ledgers to suitcases of bills. That does not mean privacy is optional. Fungibility still matters for sound money, and careless KYC plus address reuse will dox you faster than any cartoon villain storyline.

Privacy tools (CoinJoin, PayJoin, Silent Payments, careful coin control, Lightning’s different profile) improve deniability. They do not turn L1 into Monero. See the Privacy section.

Why is Bitcoin so volatile?

Because there is no central bank and no trading halt when sellers show up. Price discovery is continuous and often rude. Long-horizon charts still show a net upward path across cycles, and drawdowns have tended to moderate as liquidity deepened, but nobody owes you a smooth chart.

Comparative reality check: “safe” banks and brokerages can erase decades of equity in a week when the music stops. Volatility is not unique to Bitcoin. Bitcoin is just honest about who eats the loss.

Go deeper:

Is it too late to buy Bitcoin?

If “too late” means “the easy 10,000x from early mining is gone,” yes. If it means “the monetary properties stopped mattering,” no. Units are divisible to a sat. Adoption is uneven. The protocol still settles under the same issuance schedule. People who waited for the perfect entry often waited through several of them.

Will governments ban Bitcoin?

They can harass on-ramps, tax aggressively, and punish KYC businesses. They cannot delete open-source math from every laptop on earth. Hostile jurisdictions push activity toward peer-to-peer rails, privacy tooling, and friendlier countries. The more interesting question is whether you can still withdraw to keys you control when politics turn.

Go deeper:

“Bitcoin is dead” (again)

Obituaries are a cottage industry. The chain kept producing blocks through Mt. Gox, block-size civil wars, China bans, exchange collapses, and endless Twitter funerals. Price can bleed. Consensus rules and hash can keep marching. Check a block explorer before you believe a headline.

Is Bitcoin slow compared to banks and altcoins?

Ten-minute blocks feel slow until you compare them to chargebacks, frozen wires, and altcoin reorg theater. After enough confirmations, reversing a Bitcoin settlement gets absurdly expensive. Banks can reverse you. Altcoin “speed” often hides weaker settlement assumptions. Bitcoin’s cadence also lets globally distributed participants stay in sync.

Lightning exists for the coffee-and-chat payments that do not need a global broadcast every time. See Layers.

Property, confiscation, and governments

Governments have long histories of wealth confiscation. Encryption plus self-custody raises the cost of theft by the state, if you actually hold keys and practice operational security. A seed phrase on a sticky note is not magic. Threat modeling is.

Some people treat Bitcoin as a Western casino. Others, who grew up under worse states, treat it as insurance. Taxation, accountability, and the asymmetry between those who need exit money and those who speculate with it are recurring themes on the show.

Go deeper:

Bitcoin forks: soft forks, hard forks, BCH, BSV

If you only learn one cultural fact from this FAQ, learn this: Bitcoin’s history is a history of forks, attempted forks, accidental forks, and the politics of who gets to keep the name. Soft forks tighten rules. Hard forks change them in ways old software rejects. UTXO splits copy the coin ownership set onto a new chain. Codebase forks copy the software and start a new economy. Confuse those categories and every Twitter fight will gaslight you.

The magazine opener and the quote archive are the durable references:

What is a soft fork vs a hard fork?

A soft fork tightens consensus rules. Old nodes can stay online; they may simply fail to understand new transaction types. That is why P2SH, CLTV, CSV, SegWit, and Taproot could activate without splitting the UTXO set. Soft forks still need social consensus, miner signaling or user enforcement, and a deployment path. They are upgrades to one chain, not new coins.

A hard fork loosens or otherwise changes rules so that old nodes reject new blocks. Everyone who wants the upgraded chain must update. Some hard forks are planned upgrades. Some are accidents (2010 overflow cleanup; 2013 Berkeley DB / LevelDB drama). Some activation fights (UASF against miners) get argued as soft forks in branding and hard forks in effect.

Bitcoin’s preferred tradition on mainnet has been soft forks. The serious coordinated hard-fork attempt at a block-size bump (SegWit2x / New York Agreement) was cancelled. Accidental splits still happened. Read the table of eight activated soft forks in the magazine essay before you argue activation lore from memory.

Why do Bitcoin forks matter?

Because forks are how policy disagreements become physical. Users, miners, exchanges, and developers do not always share a future. Forks are also how features that cannot win consensus on L1 get tried somewhere else (big blocks, restored opcodes, drivechains, privacy tech). You do not have to like a fork to learn from it. Ignoring fork history is how people get surprised by the next one.

What is Bitcoin Cash (BCH)?

Bitcoin Cash is the primary consequence of the 2015-2017 block size war. On 1 August 2017 it produced Bitcoin’s first durable UTXO chain split: same history to the split, then bigger blocks, replay protection, and a permanent branding fight over the word “Bitcoin.” Later BCH history includes further splits (BSV in 2018; the ABC / eCash line in 2020), scheduled hard-fork upgrades, CashTokens, and an adaptive block size algorithm.

Whether you think BCH “won” or “lost,” it proved several durable lessons: replay protection can make a contentious split liquid; exchanges often decide tickers; big blocks alone do not conjure demand; and ideas still leak across camps (privacy tooling, covenants research, UTXO commitments).

Go deeper:

What is Bitcoin SV (BSV)?

Bitcoin SV split from Bitcoin Cash on 15 November 2018. Same UTXO ancestry through BCH, then a different culture: unbound (miner-policy) blocks, restored opcodes, enterprise-data narratives, and years of Craig Wright litigation that poisoned market access. It is the big-block experiment taken further than BCH dared, with all the political and legal baggage that came attached.

You can reject Wright, reject the brand, and still study the engineering claims (gigabyte blocks happened; script restoration is real; confiscation primitives are a live philosophical fight). Or you can skip the coin and still read the fork as a cautionary tale about lawsuits, exchange politics, and patron dependence.

Go deeper:

What about newer fork season (Drivechains / Ecash, BIP110, etc.)?

Fork season did not end in 2017. Soft-fork politics around covenants (CTV and friends), restrictive data-policy proposals (BIP110 / related designs), and Paul Sztorc’s Ecash hard-fork path for BIP300/301 Drivechains are live arguments. Naming trap: eCash XEC (Amaury / Avalanche line from BCH) is not Ecash ECX (Sztorc’s proposed BTC hard fork with Drivechains), and neither is Chaumian mint “ecash” (Fedimint / Cashu). Blur those three and every conversation lies.

Go deeper:

Nodes, verification, and self-custody

Being a Bitcoin user means verifying

If you want to know you’re receiving valid bitcoin, run validation yourself. Download Bitcoin Core (or another serious implementation), sync, and send/receive with your own ruleset. Light wallets are conveniences with trust assumptions. Treat them accordingly.

Dedicated always-on setups (old laptop, Raspberry Pi stacks, plug-and-play node appliances) still make sense if you also want Lightning and sovereignty without babysitting a desktop.

Go deeper:

How do you secure bitcoins? (self-custody)

For small amounts, a careful hot wallet on a machine you understand can be fine. As balances grow, offline / cold setups, passphrases, multisig, and metal backups enter the picture.

Hardware wallets help against malware on your daily driver. They are not ninja-proof magic. Supply-chain attacks, fake seed cards, bad entropy, and blind firmware trust are real. Prefer open, auditable designs. Learn threat models. Do not buy security theater.

The show has covered Trezor extensively (Slush; later Matej Zak), adversarial takes (Peter Todd), Coldcard drama and lessons (Keags), and DIY signing-device culture (Specter / SeedSigner / Krux). Pick tools for your threat model, not a merch list. Brand loyalty is not a security model.

Go deeper:

Self-custody threats that age better than this FAQ

The surface moves: phishing, exchange freezes, malicious wallet updates, AI-assisted vuln discovery, jurisdictional pressure on privacy tooling. Diversify failure modes. Multisig and vault policies help when single-sig convenience is no longer worth it. Successful security is often invisible, until it isn’t.

Mining (post-China, pools, ASICs)

What is Bitcoin mining? Can I mine Bitcoin?

Mining is the competition to find a valid proof-of-work for the next block: specialized hardware grinding hashes until one finds a rare number. The winner collects the block subsidy + fees. Miners defend the chain against cheap history-rewrites. Full nodes keep miners honest about the rules (including the supply schedule).

Yes, mining is permissionless. In practice, competitive mining needs ASICs. Joining a pool is optional convenience (and a trust/coordination choice). GPUs and laptops are not a strategy for BTC mainnet in 2026.

Are mining pools an oligopoly that “owns” Bitcoin?

Pools are coalitions of hardware owners chasing more predictable payouts. Participants can leave. Pool brands rise and fall. Concentration is a real risk to watch. It is not the same thing as “five companies own Bitcoin.” Watch incentives, not logos. History is littered with pools that looked inevitable and then evaporated.

Go deeper:

Can China (or any one state) shut down Bitcoin?

No single state can. Cheap power and industrial policy once concentrated a huge share of hash in China. After the 2021 mining crackdown, that hash largely relocated (Americas, Central Asia, Middle East, and elsewhere). The network continued. If a jurisdiction turns hostile, hardware and operators move toward cheaper or friendlier electrons. Bribery and gray markets exist. So does exit.

Buying bitcoin without getting farmed

Where do I buy my first bitcoins?

Depends on your country. Prefer rails that are less hostile to self-custody culture. Peer-to-peer (Bisq, Hodl Hodl, and local meetups done carefully) still matters for privacy and resilience.

KYC mega-exchanges are convenient on-ramps and surveillance endpoints. If you use one, withdraw. “Not your keys” is not a meme. It is the product. Exchange brands rise, fall, get acquired, and change politics. Do not treat any single brand as eternal advice.

For P2P: escrow mirrors the real-world problem that fiat transfers reverse and bitcoin usually does not. After a sale, sellers often cash out via ATMs or cash to kill chargeback risk. In-person meetup trades: receive to a wallet you control, wait for confirmation before handing cash, and do not get followed home. Paranoia is a feature when the asset is bearer-like.

Non-KYC swap rails exist. Still do your own diligence. Jurisdiction laws change. This FAQ will not outlive them.

Lightning Network, Liquid, covenants, and drivechains

What is the Lightning Network?

Lightning is a second-layer payment channel network for speed, lower fees, and a different privacy profile than broadcasting every coffee on-chain. It is permissionless to use and run, with real UX and liquidity tradeoffs. It is production software now, not a whitepaper vibe. It is also not magic: channel management, inbound liquidity, and backup hygiene still matter.

What is Liquid?

Liquid is a federated sidechain aimed largely at exchange and trader workflows. Joining and leaving depends on federation politics. Different audience than Lightning. Different trust model. Not a competitor in the cartoon sense; a different animal.

Covenants / CTV: why should a normal person care?

Covenants (for example OP_CTV and related proposals) are small script upgrades that let you constrain how coins can be spent later. That unlocks safer vaults, better off-chain protocols, and building blocks for more trust-minimized layers. They are plumbing, not a meme stock.

Politics around soft forks is half the story. “Consensus” is often circular. The bar rises as more capital sits on the network.

Go deeper:

Drivechains, ecash forks, and “Bitcoin can do more”

Drivechains (BIP 300/301) are Paul Sztorc’s long campaign for miner-enforced sidechains so Bitcoin can host altcoin-like functionality (privacy, big blocks, prediction markets, EVMs, and so on) while L1 stays conservative. After years of soft-fork politics, Sztorc’s Ecash effort packages drivechains as a hard-fork laboratory with staged launch mechanics and claims for BTC holders. Controversial. Important to understand even if you disagree.

Go deeper:

Privacy, CoinJoin, and surveillance

Is Bitcoin private?

Bitcoin is not anonymous. It is a permanent open ledger with pseudonymous addresses. If you reuse addresses, publish an xpub, KYC at an exchange, or merge coins carelessly, you light yourself up for chain analysis. Satoshi already warned about multi-input linking in the whitepaper.

Fungibility still matters. CoinJoins, PayJoins, Silent Payments, Tor/mixnets, and careful coin control improve deniability. They do not hide amounts on L1 the way Zcash shielded pools or Monero-style designs do.

Tooling beyond any single wallet brand: Wasabi (WabiSabi CoinJoin), JoinMarket, PayJoin, Silent Payments (for example via wallets that support them), Mercury/statechain ideas, Lightning’s different privacy profile, and cross-network privacy tech (Zcash, Monero) that the show covers without purity-test panic.

Go deeper:

CBDCs and surveillance money

What about CBDCs?

Central bank digital currencies, chat-control regimes, and “one big bank” architectures are the mirror image of Bitcoin’s pitch: programmable money with the state as umpire and player. Werner’s through-line across appearances: kill community banks, consolidate credit issuance, expand surveillance. Taaki’s through-line: build exit tech and do not confuse number-go-up propaganda with leadership.

If Bitcoin is optional exit, CBDCs are optional (then mandatory) enclosure. Learn both so you can tell which future you are being sold.

Go deeper:

Culture, maximalism, and how to keep learning

Bitcoin maximalism vs learning from other systems

Maximalism, at its best, meant maximize what Bitcoin can do. At its worst, it became purity tests, ossification cosplay, and brain-drain denial. Recent seasons are blunt about that: study Zcash cryptography, Ethereum L2 research, Monero tradeoffs, Kaspa/PoW research, then demand Bitcoin ship or get forked by people who will.

Fork literacy is part of culture now. Read the Forks magazine pieces even if you never buy a split coin. Understanding why people leave teaches you what they wanted Bitcoin to be.

Go deeper:

How should a beginner learn without getting farmed?

Prefer primary sources and long conversations over influencers selling courses. Run a node when you can. Withdraw from exchanges. Read the whitepaper. Listen to people you disagree with (fork debates are educational precisely because they are uncomfortable). Distrust guaranteed returns, “seed phrase support,” and anyone who needs your keys to help you.

Curiosity beats corporate onboarding. If you need a weird mnemonic sometime, there is an old “Bitcoin in 11 Pokémons” piece on the site. Optional. Not required for money.

Keep this FAQ alive (and help translate it)

Questions welcome in the comments. Translations welcome at bitcointakeover@protonmail.com.

Principles that age better than any single exchange brand or soft-fork slogan:

  1. Verify supply yourself (node or explorer; dated footnotes only).
  2. Run validation when the balances matter.
  3. Self-custody with a threat model, not a merch list.
  4. Open protocol: nobody owns Bitcoin; forks and politics are part of the package.
  5. Break FUD with receipts, not vibes (Breaking FUD hub).

Full archive: bitcoin-takeover.com · Audio player / 372 episodes

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Vlad Costea 3 Jan 2021

Depending on where you are based, you have lots of alternatives for ethical exchanges which better respect your privacy. Coinbase has a good record as a custodian, but it employed the people who were hacking freedom fighters to help authoritarian regimes stay in power to spy on users. Send me an e-mail or write me a message on Twitter and I’ll guide you through the process.

Laura 30 Dec 2020

All new to me, started very small to “ get the idea” with Coinbase. You recommend close that out ? Any other recommendations to learn ?

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