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Bitcoin

What is Bitcoin?

The digital financial system changing the world
Ferenc Kovács
An abstract concept.
Not a thing — but an agreement.
Agreement

Not a thing —
an agreement

Broken

Always
broken

Diamond

What if no one
could break it?

DEFINITION
Bitcoin is a state-less, corporate-less, and intermediary-free global, lightning-fast, for anyone freely accessible and 100% protected by mathematics digital financial system.
A finished, stable, working system — since 2009.
THE TURN

So this isn't the evolution of money —

EVOLUTION
REVOLUTION
The reinvention of money. New foundation. New rules. New era.

What does the Bitcoin network promise?

1 / 4
01

Open to everyone

No permission needed. No registration, no age limit, no bank account. Accessible to 8 billion people — all you need is a phone and internet.

1.3 bn
adults have no bank account — 21% of the world's adult population (World Bank Findex 2024).
80%
don't live in a fully free country — only 20% live in a fully free system (Freedom House 2025). Most of Africa, China, Russia, Iran, Middle East, Central Asia: your money can be taken at any time.
2 bn
children worldwide — can't open an account, can't control their own money. Bitcoin: anyone, any age, even without a parent.
€0.25
is enough to buy Bitcoin. No minimum, no portfolio threshold, no wealth manager. Stocks, real estate, serious investments need millions — here you can start from €1.
Open to everyone
02

Finite supply

21,000,000. Never more. Can't be diluted, can't be printed. The code guarantees it — not a politician.

Hungarian Forint
2010 money supply16,7 ×10¹² Ft
2024 money supply48,9 ×10¹² Ft
Growth2,93×
Purchasing power loss−66%
Annual avg (CAGR)−7,4%
US Dollar
2010 money supply12,8 ×10¹² $
2024 money supply29,0 ×10¹² $
Growth2,27×
Purchasing power loss−56%
Annual avg (CAGR)−5,7%
Finite supply
03

Always auditable

Every transaction is public. Cent-accurate, real-time. Anyone can verify — from anywhere in the world, anytime, for free.

900,000+ transactions per day, all traceable — every single entry since January 2009.
Question for the room
"When do you think Fort Knox, the US gold reserve, was last fully audited?"
Answer: 1953. More than 70 years ago. Since then, only partial spot-checks and seal inspections — the complete inventory has never been independently audited. The world's largest gold reserve sits behind a closed door. Every satoshi of Bitcoin, by contrast, is open 24/7.
Always auditable
04

Protected by the strongest network

~1,057 EH/s of computing power — there is no stronger network in the world. And it protects your money for free.

~17
Paks II-sized reactors worth of energy — ~20 GW continuous load, ~200 TWh per year. (Paks II: planned Hungarian nuclear plant, 2×1.2 GW)
$170+ bn
one Paks II costs $10+ billion and 10+ years to build — 17× that would be needed to build this at state level. The Bitcoin network, in contrast, emerged spontaneously: nobody recruited the miners, they joined on their own.
4–5×
The combined capacity of every supercomputer in the world is still a fraction of the Bitcoin network — to compete with it, you'd need four to five times that power. No state could break it — not now, not in any foreseeable timeframe.
Protected by the strongest network
Cypherpunk timeline

40 years of
evolution

Bitcoin wasn't born overnight
White Paper page 1
1.
Introduction
Peer-to-peer electronic cash system
Page 1 / 9
White Paper page 2
2.
Transactions & Timestamp
Chain of digital signatures
Page 2 / 9
White Paper page 3
3.
Proof-of-Work
Consensus through energy
Page 3 / 9
White Paper page 4
4.
Incentives & Merkle Tree
Miner reward + efficient storage
Page 4 / 9
White Paper page 5
5.
SPV & Transactions
Simplified verification
Page 5 / 9
White Paper page 6
6.
Privacy
Pseudo-anonymous key pairs
Page 6 / 9
OCTOBER 31, 2008

Bitcoin
White Paper

9 pages · 40 years of knowledge · Satoshi Nakamoto
Introductionpage 1
Transactions & Timestamppage 2
Proof-of-Workpage 3
Incentives & Merkle Treepage 4
SPV & Transactionspage 5
Privacypage 6
The Times, January 3, 2009
JANUARY 3, 2009

Genesis Block

0100000000000000000000000000000000000000000000000000000000000000000000003ba3edfd7a7b12b27ac72c3e67768f617fc81bc3888a51323a9fb8aa4b1e5e4a29ab5f49ffff001d1dac2b7c0101000000010000000000000000000000000000000000000000000000000000000000000000ffffffff4d04ffff001d0104455468652054696d65732030332f4a616e2f32303039204368616e63656c6c6f72206f6e206272696e6b206f66207365636f6e64206261696c6f757420666f722062616e6b73ffffffff0100f2052a01000000434104678afdb0fe5548271967f1a67130b7105cd6a828e03909a67962e0ea1f61deb649f6bc3f4cef38c4f35504e51ec112de5c384df7ba0b8d578a4c702b6bf11d5fac00000000
The Times 03/Jan/2009 Chancellor on brink of second bailout for banks

The evolution of accounting

Humanity's greatest invention after money: record-keeping
~3000 BCE

Single-entry

One priest writes it. Whoever writes, decides.

Trust: in one person
~1300

Double-entry

Debit and credit. Still trust-based.

Trust: in institutions
2009 ➞

Triple-entry (Bitcoin)

Public ledger. Anyone can verify.

Trust: in mathematics
"The forint supply is given in billions. Bitcoin's is known to the last satoshi."

For the first time in history, truly yours

🍌
Physical

Banana

I give it → you have it, I don't.

Property = Possession
🗺️
Digital 1.0

Treasure map

I tell you → we both know. Just information.

Property ≠ Possession
Digital 2.0

Bitcoin

Elküldom → nálad van, nálam már nincs. Közvetítő nélkül.

Property = Possession
When the promise of 'digital property' breaks
2009

Kindle — Orwell

Amazon remotely deleted George Orwell's 1984 from every Kindle overnight. People "bought" it — yet it vanished. Literally, Big Brother deleted Big Brother.

2013

Cyprus — Bail-in

~47% of bank deposits over €100,000 were seized as part of the bailout. Legally the customers' money — yet they couldn't actually possess it.

500
years ago
Physical world
gold · house · land
50
years ago
Digital 1.0
files · accounts · passwords
17
years ago
Digital 2.0
Bitcoin — digital possession

The new geography of ownership, 17 years ago

For 500 years we've handled banana-like things — gold, houses, land. If it's in your hand, it's really yours.
For 50 years we've been dealing with digital things — files, accounts, passwords. All held in custody by someone else.
For 17 years there's been a digital thing we can own like a banana.

Bitcoin's 3 pillars

Users

Anyone, anywhere, anytime

Rule-keepers

Nodes

They decide the rules.
A Raspberry Pi is enough.

Miners

They protect with energy. Voluntarily.

Bitcoin
CONSENSUS
Rules only change if everyone voluntarily upgrades. The minority can always stay.
All other systems
DEMOCRACY
51% decides for the other 49%. The minority must comply.
2017: 90% of miners and big capital tried to rewrite the rules. The nodes said no. The coup collapsed in 14 days.

Why is Bitcoin valuable?

Because of its properties.
A doctor once walked into the meetup and gave me two minutes to explain.
Durable
A+ AuA+ $C
Portable
A+ AuD $B
Verifiable
A+ AuC $C
Divisible
A+ AuB $B
Scarce
A+ AuB $F
Censorship-resistant
A+ AuC $F

Crypto = Evolution

Same system, digitally

Bitcoin = Revolution

New foundation. Independent. Working.

A finished, stable, working system.

Since 2009. Nonstop. No downtime.
6303 days of uptime
The question isn't what Bitcoin is.
The question is when you'll understand it.
NEXT TALK
Bitcoin: numbers and analogies
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