A free learning path
From money to Bitcoin
We begin with why people exchange value and what we actually call money. Only then do we move to banks, inflation, history, Bitcoin, its technology and the unresolved debates around it.
Bitcoin Verity
The complete learning roadmap
The learning path progresses through ten thematic levels. Further articles are published gradually after editorial and source review.
01PublishedLevel 1 · First principlesThe foundation articles establish a shared vocabulary. Read them in order or open the question you need.
- exchange of value
- functions of money
- trust
- Bitcoin in five minutes
Why do people exchange value?
Exchange, specialisation, gifts, credit and why societies seek a shared way to keep accounts.
What is money?
Why money is not just banknotes, and what cash, bank deposits and reserves represent.
Money, currency, wealth, income and debt
Five concepts often confused even though each describes a different part of personal and public finance.
The three functions of money
Medium of exchange, unit of account and store of value—and why no asset performs them perfectly.
What makes good money?
Durability, portability, divisibility, recognisability, fungibility, scarcity, liquidity and secure verification.
Why do we trust money?
Trust in acceptance, institutions, rules and technology—and what it really means to call Bitcoin trustless.
Nominal value, real value and purchasing power
Why the same account balance need not buy the same goods and how to read inflation correctly.
Bitcoin in five minutes—accurate, not superficial
The network, unit, transactions, nodes, mining, supply and user responsibility in one coherent model.
Package quiz · First principles
Package quiz · 01
A quick quiz with no tricks
10 short questions. Choose A, B or C — only one answer is correct each time.
02PublishedLevel 2 · The history of moneyFrom gifts, debt and accounting records through coins and notes to fiat currencies.
- early accounting
- coinage
- gold standard
- Bretton Woods
How do we know the history of money?
What archaeology, account tablets, coins and written records reveal—and where historians' certainty ends.
Gifts, reciprocity and debt before coins
Why economic relationships did not begin with barter alone, and how obligations worked without modern money.
Accounting in Mesopotamia: money as a record
Clay tokens, cuneiform, barley, silver and recorded obligations millennia before banknotes.
Commodity money: when currency has another use
Grain, cattle, shells, salt and other goods that performed monetary functions in particular societies.
Why metals served as money
From weighed copper and silver to standard units—the benefits of metal and the cost of checking it.
The first coins and the power of standardisation
What a stamp on metal changed, what is known about Lydian electrum and what remains disputed.
Coins, states, taxes and trade
How political authority supported demand for coins, and why trade was not merely a passive result of state minting.
Debasement, clipping and counterfeit coins
The difference between an issuer changing the standard, theft from a coin's edge, ordinary wear and a forgery.
How paper money emerged
From Chinese merchant receipts to government notes, and from claims on metal to an independent means of payment.
Bills, deposits and the beginnings of bank money
How merchants moved value without shipping coins and how private obligations became payment infrastructure.
Private banknotes and the promise of convertibility
How banks issued their own notes, why those notes could have different values and what a promise to redeem them for metal actually meant.
How central banks emerged
Why central banks did not follow one blueprint and how note issuance, settlement, monetary policy and crisis roles accumulated over time.
Bimetallism and the gold standard
How currencies were linked to silver and gold, why fixed metal ratios created tension, and what the gold standard could and could not do.
Bank runs, emergency liquidity and deposit protection
Why even a bank with valuable assets can face a rush of withdrawals, and how a lender of last resort and deposit insurance change the risk.
Wars, the interwar gold standard and the Great Depression
Why the First World War disrupted convertibility, why the return to gold was fragile and how the regime mattered in the 1930s crisis.
Bretton Woods and the road to today's fiat money
How the postwar system linked currencies to the dollar and the dollar to gold, why it broke down, and what supports money today.
Package quiz · The history of money
Package quiz · 02
A quick quiz with no tricks
10 short questions. Choose A, B or C — only one answer is correct each time.
03PublishedLevel 3 · Today's monetary systemCentral and commercial banks, deposit creation, interest rates, inflation and payment layers.
- bank deposits
- credit
- central banks
- inflation
What is modern money made of?
Cash, bank deposits and central-bank reserves look like one currency, but they are distinct layers and liabilities.
A bank deposit is a claim, not a bundle of notes
What an account balance actually means, how it appears on a bank's balance sheet, and why liquidity differs from solvency.
How a bank loan creates a new deposit
A simple balance-sheet example shows money appearing with a loan, moving to another bank and disappearing as principal is repaid.
What limits the creation of bank money?
Why banks cannot make infinite loans: borrowers, risk, capital, liquidity, funding, regulation and monetary policy.
How payments move between banks
From a tap in an app through clearing to final settlement in central-bank money.
Interest: the price of time, credit and risk
Why a borrower repays more than they borrowed, why a saver may earn a return and what makes up a particular interest rate.
What does a central bank do?
Why a central bank is neither a retail bank nor a ministry, how it pursues price stability, and which other tasks it performs in the euro area.
How interest rates reach people and businesses
From a central-bank decision through money markets and bank pricing to mortgages, savings, demand and consumer prices.
What inflation is, how it is measured and why it happens
The difference between one expensive item and a rising price level, how the HICP is built, and why personal inflation can differ from the average.
Government budgets, debt and ‘money printing’
What a deficit is, how governments finance it, why a bond is not automatically new money, and where fiscal and monetary policy meet.
Quantitative easing: what QE and QT mean
How asset purchases create reserves, why they can lower long-term yields, what they cannot guarantee, and how balance-sheet reduction works.
What happens when a bank fails?
From first losses and deposit flight through emergency liquidity, deposit protection and bail-in to the difference between a bank account and self-custodied BTC.
Package quiz · Today's monetary system
Package quiz · 03
A quick quiz with no tricks
10 short questions. Choose A, B or C — only one answer is correct each time.
04PublishedLevel 4 · Why Bitcoin emergedDigital scarcity, the double-spend problem, cypherpunks and 2008.
- digital money
- double spending
- white paper
- genesis block
Why does digital money need a shared record?
Why an ordinary file cannot safely serve as money and why a system must know who may spend each unit.
What is the double-spend problem?
How two digital payments can conflict, why a signature cannot resolve them and how Bitcoin creates a common order without a bank.
Bitcoin's predecessors and the cypherpunks
What eCash, Hashcash, b-money, bit gold and RPOW contributed, and why Bitcoin did not appear from one idea in a vacuum.
2008: crisis, banks and a loss of trust
What actually happened in the financial crisis, how its timing relates to Bitcoin, and what can and cannot be inferred from the genesis message.
The Bitcoin white paper: what did it propose?
A reading guide to the nine-page document: its problem, transactions, timestamps, proof of work, incentives and boundaries.
The genesis block and Bitcoin's first days
What the first block contains, how open software was released in January 2009 and why decentralisation did not appear in a single instant.
Package quiz · Why Bitcoin emerged
Package quiz · 04
A quick quiz with no tricks
10 short questions. Choose A, B or C — only one answer is correct each time.
05PublishedLevel 5 · How Bitcoin worksTransactions, signatures, blocks, mining, nodes, consensus and the final supply.
- keys
- UTXOs
- proof of work
- nodes
What is actually sent in a Bitcoin transaction?
What a wallet creates, what travels across the network and why no digital object moves between two phones.
Private key, public key, address and signature
Four frequently confused terms: what must remain secret, what may be shared and what a signature actually proves.
UTXOs: why Bitcoin has no bank accounts
How a wallet builds a balance from separate outputs, why it spends them whole and where the change goes.
The mempool and fees: why a payment waits
What happens before the first confirmation, why each node sees a different waiting room and why the fee is not set by the amount sent.
Blocks, confirmations and chain reorganizations
How transactions enter shared history, what a confirmation means and why even a fresh block is not a magical seal.
The full node: who really enforces the rules?
The difference between a node, miner and wallet—and why independent validation is not voting by computer count.
Proof of work: why a block needs computational work
How repeated hashing ties the creation of a block to a measurable cost, and why the result is much easier to verify than to find.
Mining and difficulty adjustment: why a block does not arrive exactly every ten minutes
How a candidate block is built, why finding it is random and how the network adapts to changes in total computing power.
Consensus without a central operator
How independent nodes converge on a shared history, what accumulated work actually selects and why consensus is not a vote.
Block reward, halvings and the 21 million limit
Where new bitcoins come from, how subsidy differs from fees and who enforces the issuance schedule.
Package quiz · How Bitcoin works
Package quiz · 05
A quick quiz with no tricks
10 short questions. Choose A, B or C — only one answer is correct each time.
06PublishedLevel 6 · Use and securityBuying, fees, wallets, seed phrases, backups, privacy and the Lightning Network.
- self-custody
- seed phrase
- fees
- Lightning
Custody and self-custody: who actually holds the keys?
The difference between a balance held by a custodian and bitcoin controlled with your own keys, including the risks of both options.
Hot, cold and hardware wallets
What these names really mean, which wallet functions can be separated and what trade-offs they bring.
Seed, HD wallet and recovery words
How one random value produces a tree of keys, what BIP 39 does and why knowing only the word list may not be enough.
Backups, passphrases and recovery tests
How to design a backup against loss and theft, what a BIP 39 passphrase changes and why recovery should be tested safely.
How to receive Bitcoin safely
A new address, the correct network, payment-instruction checks and the difference between an announced and a confirmed transaction.
How to send Bitcoin safely and choose a fee
Checking the destination and amount, calculating the network fee, uncertainty around confirmation time and options for a pending transaction.
How to buy Bitcoin safely
Choosing a purchase route, comparing the real total cost, securing the account and testing a withdrawal before committing a larger amount.
How to sell Bitcoin and withdraw funds safely
Depositing to the right destination, understanding execution and cash-out costs, and avoiding false payment evidence in peer-to-peer trades.
Bitcoin address types and compatibility
What addresses beginning with 1, 3, bc1q and bc1p indicate, how checksums help and why an address should never be converted by hand.
UTXO management, coin control and consolidation
Why one displayed balance can consist of many outputs, how wallet input selection changes fees and privacy, and when consolidation can backfire.
Privacy on Bitcoin's public blockchain
What the chain reveals, how address reuse and coin selection create links, and what a wallet server or block explorer can learn.
Common Bitcoin scams and social engineering
How impersonation, fake support, guaranteed returns and recovery schemes exploit urgency—and what to do when a secret may be exposed.
Multisig and distributed backups
How m-of-n spending removes one key as a single point of failure, what must be backed up besides seeds, and why rehearsals matter.
Bitcoin inheritance and an emergency-access plan
How to let an authorised person discover and recover a wallet without exposing every secret too early or relying on one undocumented device.
How the Lightning Network works
Payment channels, routed and atomic transfers, invoices, directional liquidity and why opening or closing a channel still touches the blockchain.
Lightning wallets: custody, risks and backups
The difference between a custodial balance and self-custodial channels, why a seed may not restore every channel state, and what a force-close means.
Package quiz · Use and security
Package quiz · 06
A quick quiz with no tricks
10 short questions. Choose A, B or C — only one answer is correct each time.
07PublishedLevel 7 · Bitcoin economicsScarcity, volatility, monetisation, adoption and disputes over Bitcoin's role.
- supply
- demand
- volatility
- monetary premium
Scarcity, limited supply and value
Why a finite number of units matters but cannot create demand, usefulness or a price by itself.
Issuance, circulating supply and lost bitcoin
The difference between issued units, coins available to markets and bitcoin for which nobody may retain a key.
Demand, liquidity and Bitcoin price formation
How orders, market depth and arbitrage turn differing views of buyers and sellers into an observed price.
Market capitalisation is not cash invested
What price times supply means, why a billion in market cap need not require a billion in new purchases and what depth reveals.
Why Bitcoin is volatile
How uncertain future demand, round-the-clock trading, thin liquidity and leverage can amplify price moves.
Market cycles, halvings and why they are not a clock
What definitely changes at a halving, what markets can anticipate and why four years is not a dependable price calendar.
Network effects, adoption and monetisation
Why a network may become more useful with participation, why an address is not a user and how to avoid circular adoption measures.
What is a monetary premium?
How demand to hold a monetary good may lift price beyond other uses, and why that component cannot be measured directly.
Bitcoin as a store of value and inflation hedge
Why purchasing power must be measured over a particular period and currency, and why fixed supply is not an automatic short-term hedge.
Bitcoin as a medium of exchange and unit of account
How paying in BTC differs from pricing in BTC and holding BTC, and why each monetary function can develop at a different pace.
Package quiz · Bitcoin economics
Package quiz · 07
A quick quiz with no tricks
10 short questions. Choose A, B or C — only one answer is correct each time.
08PublishedLevel 8 · Objections and open questionsEnergy, scaling, regulation, ownership concentration and fair counterarguments.
- energy
- capacity
- regulation
- risks
Bitcoin, energy use and emissions
Why proof of work uses electricity, what can be measured and why a kilowatt-hour is not the same as an emission.
Can Bitcoin scale? Capacity, fees and layers
Why the base layer cannot process everything, what higher layers add and which trade-offs remain.
Bitcoin and regulation: what governments can affect
The difference between protocol rules and laws affecting exchanges, miners, businesses and users.
Concentration of ownership, mining and power
What large addresses and pools show, what they cannot reveal and why wealth is not a protocol vote.
Can Bitcoin fail? Risks and open questions
Software flaws, attacks, economic incentives, cryptography and loss of demand without false certainty.
Package quiz · Objections and open questions
Package quiz · 08
A quick quiz with no tricks
10 short questions. Choose A, B or C — only one answer is correct each time.
09PublishedLevel 9 · Advanced technical layerScript, multisig, Taproot, timelocks, the mempool, protocol development and running a node.
- Script
- multisig
- Taproot
- mempool
Bitcoin Script and spending conditions
How locking scripts, witness data and a stack language decide whether a UTXO may be spent.
Transaction structure, txid, wtxid and sighash
What a signature commits to, how inputs reference UTXOs and why SegWit has two identifiers.
Advanced multisig, descriptors and recovery
Why seeds alone are insufficient and how descriptors, PSBTs and key origins preserve recoverability.
Timelocks: nLockTime, CLTV, CSV and sequence
The difference between delaying a transaction and making a UTXO spendable only after an absolute or relative time.
SegWit, witness and transaction malleability
What Segregated Witness separated, how identifiers changed and why signatures did not disappear from the blockchain.
Schnorr signatures and Taproot
How BIP 340 signatures support Taproot and why key aggregation is a separate protocol.
Tapscript and script branches
How a Taproot script-path spend proves one leaf and how Tapscript changes signature opcodes.
Miniscript, policy and script analysis
How a structured representation helps wallets compose and analyse spending rules without changing consensus.
Mempool, RBF, CPFP and fee bumping
How local mempool policy treats replacements and transaction packages when a payment is waiting.
How miners assemble a block
From a node's candidate template through coinbase and merkle root to proof of work and pool shares.
P2P network, compact blocks and encrypted transport
How peers discover and relay data, how compact blocks save bandwidth and what BIP 324 does not hide.
Your own full node: archive, pruning and verification
What initial sync verifies, what the UTXO set retains and what changes when old blocks are pruned.
How Bitcoin changes: BIPs, soft forks and consensus
From proposal and implementation through review and activation to the rules nodes actually enforce.
Package quiz · Advanced technical layer
Package quiz · 09
A quick quiz with no tricks
10 short questions. Choose A, B or C — only one answer is correct each time.
10PublishedLevel 10 · Verification and second layersMerkle proofs, light clients and the technical workings of Lightning channels and routing.
- Merkle trees
- SPV
- HTLC
- routing
Merkle trees and cryptographic commitments
How one hash in a block header can bind thousands of transactions—and what an inclusion proof still does not prove.
SPV, light clients and compact block filters
What a wallet can verify without the full blockchain, where it still relies on peers and why BIP 157 reverses the filtering direction.
Lightning channels, commitments and HTLCs
How two parties update a channel without an on-chain transaction for each payment, and why an old state becomes unsafe to publish.
Lightning routing, liquidity and payment failures
How a sender builds a route, what each intermediary sees and why a public channel does not guarantee that a payment can pass.
Package quiz · Verification and second layers
Package quiz · 10
A quick quiz with no tricks
10 short questions. Choose A, B or C — only one answer is correct each time.
BBonus section · B01–B10Stories that changed money and BitcoinTen curious but important stories, from tulip mania and stone money to Satoshi's coins, Bitcoin pizza and bugs that tested the network.
Tulip mania: what really happened?
Why some tulip contracts collapsed in 1637, and why the familiar story of an entire country ruined by flowers is exaggerated.
The South Sea Bubble: when public debt became a story
How public debt, shares, political privilege and easy credit combined in 1720—and why the price could not last.
Rai stones: money that did not have to move
What Yap's large stone discs teach about ownership, shared memory and the tempting—but incomplete—blockchain analogy.
Hungarian hyperinflation: when more zeros stopped helping
Why the pengő collapsed after the Second World War, what huge nominal numbers mean and why a new note alone cannot cure inflation.
Does Satoshi really have one million bitcoin?
Where the famous estimate comes from, what the Patoshi pattern is and why the blockchain proves neither a person's name nor current key control.
Bitcoin pizza: why 10,000 BTC was not a foolish purchase
What happened on 22 May 2010, why two pizzas aided price discovery and how hindsight distorts a historical trade.
Bitcoin's first exchange rate: when electricity set the quote
How the famous rate of USD 1 for 1,309.03 BTC arose—and why production cost is not the same as market value.
The bug that created 184 billion BTC
How an integer overflow bypassed a value check in 2010, how the network removed it and what the event says about immutability.
When Bitcoin split into two histories in 2013
How versions 0.7 and 0.8 produced two branches, and why technical consensus still needs human coordination.
HODL: the typo that became a strategy
How a 2013 forum typo spread, why it did not originally mean 'hold on for dear life', and when holding helps or hurts.
Practical shortcut
Quick guide to Bitcoin
If you need a practical overview first, the original six-step guide remains available: origins, uses, buying, custody and a safe first transfer.
Bitcoin Verity
How the material is built
We do not assume that every question has one uncontested answer. In history we distinguish evidence from popular stories; in economics, description from value judgement; and in Bitcoin, protocol rules from promises about future price.
- a progression from simple concepts to technical detail
- primary and institutional sources for every article
- a clearly labelled misconception and a fair counterargument
- no investment advice or guaranteed returns