Bitcoin is a digital currency created in 2009 by an anonymous person or group using the name Satoshi Nakamoto. Unlike the New Zealand dollar, which is issued and controlled by the Reserve Bank of NZ, Bitcoin operates on a decentralized network with no central authority. It allows people to send money directly to each other over the internet without needing a bank.
How Does Bitcoin Work?
Bitcoin runs on a technology called blockchain — a public, transparent ledger that records every transaction ever made. Think of it as a shared spreadsheet that thousands of computers around the world maintain simultaneously.
Decentralized
No single company, government, or bank controls Bitcoin. It runs on a global network of thousands of computers (nodes).
Transparent
Every transaction is recorded on the public blockchain. Anyone can verify transactions, but users remain pseudonymous.
Limited Supply
Only 21 million Bitcoin will ever exist. This scarcity is built into the code, making it similar to digital gold.
Key Concepts
Mining
Bitcoin miners use powerful computers to solve complex mathematical problems that verify transactions. In return, they receive newly created Bitcoin as a reward. This process is called "proof of work" and is what secures the network.
Halving
Approximately every four years, the reward miners receive is cut in half. The most recent halving occurred in April 2024, reducing the reward from 6.25 to 3.125 BTC per block. This gradual reduction is designed to control inflation.
Wallets
A Bitcoin wallet stores your private keys — the secret codes that allow you to spend your Bitcoin. Wallets can be hardware devices (Ledger, Trezor), smartphone apps (BlueWallet, Exodus), or even a piece of paper. Your wallet address is like your bank account number — you share it to receive Bitcoin.
Satoshis
You don't need to buy a whole Bitcoin. The smallest unit is called a "satoshi" (or "sat") — 0.00000001 BTC. You can buy just a few dollars' worth, making Bitcoin accessible to everyone regardless of budget.
Why Do New Zealanders Buy Bitcoin?
- 1. Store of value
Many investors see Bitcoin as "digital gold" — a way to preserve purchasing power against inflation, similar to how gold has been used for thousands of years.
- 2. Portfolio diversification
Bitcoin has historically shown low correlation with traditional assets like NZX stocks or property, offering diversification benefits.
- 3. Global accessibility
Bitcoin works the same way everywhere. You can send or receive value globally, 24/7, without bank hours or international transfer fees.
- 4. Financial sovereignty
With Bitcoin, you truly own your money. No bank can freeze your account, no government can seize your funds (if stored properly in a personal wallet).
Risks to Consider
Volatility: Bitcoin's price can swing 10-20% in a single day. It has experienced multiple 50%+ drops in its history before recovering to new highs.
No guarantees: Past performance does not guarantee future results. Bitcoin could lose significant value.
Self-custody risk: If you lose access to your wallet (lost seed phrase, damaged hardware), your Bitcoin may be unrecoverable. There is no "forgot password" option.
Regulatory changes: While Bitcoin is currently legal in NZ, regulations could change. The FMA continues to monitor the crypto space.
Bitcoin and New Zealand
New Zealand has a relatively progressive stance on cryptocurrency. The country has several home-grown crypto companies, an active crypto community, and clear(ish) tax guidance from the IRD. Key facts:
Legal status: Bitcoin is legal. The FMA classifies it as property, not legal tender.
Regulation: Crypto exchanges must register with the DIA and follow AML/CFT rules.
Tax: The IRD treats crypto gains as potentially taxable income depending on your intent. No GST applies.
Adoption: Surveys suggest around 10% of New Zealanders have owned cryptocurrency at some point.
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How to Buy Bitcoin in NZ