What Is Bitcoin? A Beginner’s Guide to How It Works and What It’s Worth

If someone handed you a Bitcoin in 2010, it was worth less than a cent. By late 2024, that same coin was worth over $90,000 AUD. So what actually is Bitcoin — and why does it keep making headlines?

Let’s break it down from scratch. No jargon, no fluff.

What Is Bitcoin, Exactly? (A Simple Explanation)

Bitcoin is a digital currency. There are no physical coins or notes — it exists entirely online.

But here’s what makes it different from regular money: no bank or government controls it. Instead, it runs on a shared network of computers around the world.

You can think of it like a Google Doc that everyone can see but nobody can secretly edit. Every transaction is recorded on something called the blockchain — a public, permanent ledger.

Simple version: Bitcoin is internet money that no single person owns or controls.

What Is a Bitcoin Worth Today? (Current Price and Where to Check)

Bitcoin’s price changes by the minute. It’s one of the most volatile assets on the planet.

Here’s some context:

  • In 2020, 1 Bitcoin was around AUD $15,000
  • By late 2021, it peaked near AUD $90,000
  • It crashed back to ~AUD $25,000 in 2022
  • In early 2024, it crossed AUD $100,000 again

So what is 1 Bitcoin worth right now? The honest answer: check a live source.

The best places to check the current price of Bitcoin:

Prices on these platforms update in real time and show both AUD and USD.

How Did Bitcoin Get Started?

In 2008, someone (or a group) using the name Satoshi Nakamoto published a 9-page document called the Bitcoin whitepaper.

The timing wasn’t random. The global financial crisis had just hit. Banks had failed. Billions in savings were wiped out. Satoshi proposed a different system — one where transactions could happen between two people directly, without needing a bank in the middle.

Bitcoin launched in January 2009. The first block ever mined (called the “Genesis Block”) contained a headline from The Times: “Chancellor on brink of second bailout for banks.”

That message wasn’t accidental. It was a statement.

To this day, nobody knows who Satoshi Nakamoto really is.

What Is Bitcoin Mining and How Does It Work?

Bitcoin mining sounds like digging for gold — and the analogy actually holds up.

Here’s how it works:

  1. People make Bitcoin transactions all day
  2. Those transactions need to be verified and added to the blockchain
  3. Miners (people with specialised computers) compete to solve complex mathematical puzzles
  4. The first miner to solve the puzzle gets to add the next block of transactions
  5. As a reward, they receive freshly created Bitcoin

This process is called Proof of Work.

It’s energy-intensive by design. The difficulty of the puzzle adjusts automatically every two weeks, so new Bitcoin is always released at a predictable rate.

As of 2024, miners earn 3.125 BTC per block — down from 6.25 BTC before the most recent halving. That reward is worth roughly AUD $400,000+ at current prices, which is why mining remains big business.

What Is the Bitcoin Halving — and Why Does It Matter?

Halving is one of Bitcoin’s most important features. And most people outside crypto have never heard of it.

Here’s the idea: Bitcoin has a hard cap of 21 million coins. To control how quickly they’re released, the reward miners receive gets cut in half every 210,000 blocks — roughly every four years.

This has happened four times so far:

YearBlock Reward
200950 BTC
201225 BTC
201612.5 BTC
20206.25 BTC
20243.125 BTC

Why does it matter? Simple supply and demand. Fewer new Bitcoin entering the market, while demand stays the same (or grows) — price tends to go up.

Historically, Bitcoin’s biggest price rallies happened in the 12–18 months after each halving. That pattern isn’t guaranteed to repeat, but it’s something investors watch closely.

What Is a Bitcoin ETF?

A Bitcoin ETF (Exchange-Traded Fund) lets you invest in Bitcoin’s price without actually owning Bitcoin.

Think of it like this: instead of buying Bitcoin directly and worrying about wallets and passwords, you buy shares in a fund that holds Bitcoin on your behalf. Those shares trade on regular stock exchanges — just like buying shares in ANZ or BHP.

In January 2024, the US Securities and Exchange Commission (SEC) approved the first spot Bitcoin ETFs from major firms like BlackRock and Fidelity. This was a big deal. Within weeks, these ETFs had pulled in over USD $10 billion in new investment.

In Australia, Bitcoin ETFs are also available on the ASX — making it easier than ever for everyday investors to get exposure without managing crypto wallets.

For people who find crypto exchanges confusing, a Bitcoin ETF is often the simpler path in.

Is Bitcoin Safe to Use and Invest In?

Honest answer: it depends on what you mean by “safe.”

The technology itself is robust. The Bitcoin network has never been successfully hacked in 15+ years. The blockchain is essentially tamper-proof.

But the price is anything but stable. Bitcoin has dropped 80% from its highs multiple times. In 2022 alone, it lost roughly 65% of its value in under 12 months.

Here’s what the risks actually look like in practice:

  • Volatility risk — prices swing wildly, sometimes 10–20% in a single day
  • Self-custody risk — if you lose your private keys (your password), your Bitcoin is gone forever. No bank to call. No reset button.
  • Exchange risk — in 2022, FTX collapsed and customers lost billions. Where you store Bitcoin matters.
  • Regulatory risk — governments can change the rules

For Australian investors, any profit from selling Bitcoin is subject to Capital Gains Tax (CGT). If you hold for 12+ months, you may qualify for the 50% CGT discount — same as shares.

Bottom line: Bitcoin is high-risk, high-reward. Most financial advisers suggest keeping crypto exposure to under 5–10% of your overall portfolio if you’re new to it.

How to Buy Your First Bitcoin (Step-by-Step)

This is simpler than most people think. Here’s a practical walkthrough:

Step 1: Choose an exchange

For Australians, popular options include:

  • CoinSpot — beginner-friendly, AUD deposits easy
  • Swyftx — competitive fees, clean interface
  • Binance Australia — more advanced features

Step 2: Verify your identity

All reputable exchanges require ID verification (driver’s licence or passport). This is a legal requirement — not optional.

Step 3: Deposit AUD

Link your bank account or use PayID. Deposits usually land within minutes.

Step 4: Buy Bitcoin

Search for BTC, enter how much you want to spend, and confirm. You don’t have to buy a whole Bitcoin — you can buy $50 worth if you want.

Step 5: Decide where to store it

For small amounts, leaving it on the exchange is fine. For larger holdings, consider a hardware wallet (like a Ledger) — a physical device that keeps your Bitcoin offline and out of reach of hackers.

One More Thing Worth Knowing

About 19.7 million of the 21 million total Bitcoins have already been mined. The last one won’t be mined until around the year 2140.

That scarcity is baked into the code. It’s not a promise from a company — it’s math.

Whether that makes Bitcoin a good investment is a separate question. But understanding why people find it compelling starts with understanding that number.