What Is Bitcoin?
Bitcoin wasn't invented by Silicon Valley optimists trying to get rich. It was built by someone watching banks fail in 2008 and deciding the world needed an alternative. That context matters.
It Started With a Crisis
October 2008. The global financial system was in freefall. Banks that had been considered "too big to fail" were failing. Governments were printing billions to bail them out. Regular people lost their savings, their homes, their retirement accounts — while the institutions that caused the crisis got rescued with taxpayer money.
In the middle of that chaos, someone using the name Satoshi Nakamoto published a nine-page document. A white paper. It described a new kind of money — peer-to-peer electronic cash that could move between people without a bank in the middle.
On January 3, 2009, the first Bitcoin block was mined. Embedded in that block was a message: "The Times 03/Jan/2009 Chancellor on brink of second bailout for banks."
That wasn't an accident. It was a timestamp and a statement.
Bitcoin didn't come from someone trying to disrupt payments. It came from someone who watched the financial system betray the people it was supposed to serve — and decided to build something better.
The 21 Million Cap
Bitcoin has one feature that defines everything else about it: there will only ever be 21 million Bitcoin. Ever.
That limit isn't a company policy. It's written into the code and enforced by every node on the network. No central bank, no government, no CEO can change it. The only way to change it would be to convince thousands of independent operators worldwide to accept a different version of Bitcoin — and they have every financial incentive not to.
As of today, about 19.8 million Bitcoin have been mined. The remaining ~1.2 million will be released slowly over the next 120+ years, with the rate dropping every four years.
Why does this matter? Because scarcity is a prerequisite for value.
Gold is valuable partly because it's rare. There's a finite amount of gold on Earth. Nobody can decide to just make more. Bitcoin takes that logic and makes it mathematically exact. Not approximately scarce — precisely, permanently, verifiably scarce.
// MARKET CAPITALIZATION
Low price does not mean small market cap. Always check circulating supply.
The Halving
Every 210,000 blocks — roughly every four years — the reward that Bitcoin miners receive for adding a new block gets cut in half. This event is called the halving.
When Bitcoin launched, miners received 50 BTC per block. In 2012, that dropped to 25. In 2016, 12.5. In 2020, 6.25. In April 2024, it dropped to 3.125.
The halving matters for one reason: it controls supply.
New Bitcoin only enters circulation when miners are rewarded for their work. Every four years, that rate is cut in half. So the rate at which new Bitcoin is created keeps slowing down, approaching that 21 million ceiling asymptotically, never quite reaching it in our lifetimes.
Historically, the year following a halving has been one of the best periods for Bitcoin's price. Not because of magic — because basic supply and demand. If the rate of new supply is cut in half while demand stays the same or grows, prices move up. This isn't guaranteed to repeat forever, but it's a pattern that three halvings in a row have validated.
// KEY RULE
The halving isn't just a technical event. It's Bitcoin's built-in inflation control. The US dollar has lost about 97% of its purchasing power since 1913 because more dollars keep getting printed. Bitcoin's supply schedule runs in the opposite direction — it becomes increasingly scarce over time.
// BITCOIN HALVING TIMELINE & PRICE CORRELATION
Bitcoin becomes structurally scarcer every four years. The supply schedule is not a prediction — it is code.
Store of Value vs. Medium of Exchange
There's a debate inside crypto that's been running since about 2015, and it's worth understanding.
Bitcoin as a medium of exchange — the original vision. You buy coffee with it. You send it internationally instead of using Western Union. You use it for everyday transactions.
Bitcoin as a store of value — what it has mostly become. You hold it the way some people hold gold. Not to spend it, but to park wealth in something that can't be inflated away.
The challenge with medium of exchange: Bitcoin is slow (about 7 transactions per second versus Visa's thousands), and fees spike during high demand. Spending Bitcoin every day is also a tax nightmare in most countries.
The reality with store of value: institutions are buying it. Companies are holding it on their balance sheets. Pension funds are starting to allocate to it. Bitcoin ETFs are available through your regular brokerage account now. This is the path Bitcoin has taken, and it's worked.
Is it digital gold or digital cash? Probably both, at different layers. The base Bitcoin network has increasingly become the "settle large sums" layer. Lightning Network (a layer built on top) handles smaller, faster transactions.
My Take
I don't hold Bitcoin because I hate banks.
I hold it because I understand scarcity. There are 8 billion people on this planet. There will never be more than 21 million Bitcoin. As more people — and institutions — want access to that fixed supply, the math is simple.
Is it volatile? Yes. It can drop 50% in a bear market. I've lived through multiple of those. The people who panicked and sold at the bottom of each one locked in their losses. The people who understood what they held kept holding.
// INSIGHT
Bitcoin has been declared "dead" 479 times by mainstream media since 2010. It now has a market cap larger than most countries' GDP. Not every contrarian bet pays off — but the ones backed by solid first principles tend to age well.
Nobody knows where Bitcoin's price goes in the short term. That includes me. What I do believe is that in a world where governments can print unlimited currency, a fixed-supply asset with a 16-year track record and no single point of failure is worth understanding — and worth holding some of.
Who Created Bitcoin?
To this day, nobody knows.
Satoshi Nakamoto published the white paper, launched the network, communicated with early developers, then disappeared from the internet in 2010. Numerous people have claimed to be Satoshi. None have proven it. The Bitcoin Satoshi mined in the early days — roughly 1 million coins — has never moved.
Whether Satoshi was one person or a team, whether they're alive or dead, is unknown.
What's remarkable is that it doesn't matter. Bitcoin wasn't built to need its creator. The code was open-sourced, the network was distributed, and the project was designed from the start to survive without a founder. It has.
In the next lesson: where do you actually buy this stuff, and what's the difference between an exchange that holds it for you versus owning it yourself. That distinction — custodial vs. self-custody — is one of the most important things you can learn early.