Bitcoin, explained simply — and what actually moves its price

Bitcoin is one of those topics that gets harder to understand the more you read about it. Half the internet treats it like a religion, the other half like a scam. The actual thing in the middle — a piece of software people choose to run — is much smaller than either side suggests.

What it actually is

Bitcoin is a public ledger. A list of transactions, copied across thousands of computers worldwide, that nobody owns. New entries get added in batches called blocks, roughly every ten minutes. Each block links to the previous one, which is why the whole thing is called a blockchain.

The clever part isn't the ledger — it's how new blocks are agreed on. Bitcoin uses proof-of-work: computers race to solve a meaningless math puzzle, and the winner gets to add the next block. The puzzle is hard, but the solution is trivial to verify. That asymmetry is what makes the network expensive to attack and cheap to participate in.

Where new bitcoin comes from

The winner of each block is rewarded with newly issued bitcoin. That's the only way new BTC enters circulation. The reward gets cut in half every four years — an event called the halving — until it eventually reaches zero around the year 2140. The total supply is hard-capped at 21 million.

That fixed supply is why people compare it to gold. Unlike fiat currency, no central bank can print more.

What actually moves the price

Most short-term price moves are noise. Over longer horizons, three things genuinely matter:

• Adoption — the number of real users, businesses and institutions holding or transacting in BTC.
• Liquidity conditions — when central banks loosen and money is cheap, risk assets like BTC tend to rise. When liquidity tightens, they fall.
• The halving cycle — historically, supply cuts have preceded major bull markets. Whether that pattern continues is debated.

Everything else — tweets, headlines, regulatory drama — moves the price in the short term and rarely matters six months later.

Should you own any?

That's a personal question. A defensible answer is: a small allocation (1–5% of your investable net worth) is reasonable as a non-correlated, high-volatility bet. A larger allocation requires real conviction in the long-term thesis. Anything in between is usually just chasing returns.

Whatever you decide, treat it like any other risk asset. Size the position so a 70% drawdown doesn't change how you sleep.