Bitcoin is digital money that no government controls, no bank can freeze, and no one can counterfeit. It's the first successful implementation of peer-to-peer electronic cash, and unlike anything that came before it.
The Problem Bitcoin Solves
Every dollar, euro, or pound in existence was created by someone else and can be diluted by someone else. Central banks have a single power that underlies everything: they can print more. The Australian dollar has lost roughly 70% of its purchasing power since 1990. The US dollar has lost over 95% of its value since the Federal Reserve was created in 1913.
This isn't a bug; it's how fiat currency is designed. Governments need the ability to inflate the money supply to fund deficits, stimulate economies, and bail out failing institutions. The cost is borne by everyone who holds that currency.
Bitcoin was created to solve this problem. It introduces a form of money with a fixed supply, no central issuer, and rules enforced by mathematics and consensus, not policy.
The 21 Million Cap
There will only ever be 21 million Bitcoin. This is not a promise by a company or government, it is enforced by the code that every Bitcoin node in the world runs. To change it, you would need to convince the majority of thousands of independent nodes worldwide to accept a different version of the rules. In practice, this doesn't happen: the fixed supply is Bitcoin's most sacred property.
New Bitcoin enters circulation only through mining, at a rate that halves roughly every four years. In April 2024, the block reward halved to 3.125 BTC per block. By 2140, the last Bitcoin will have been mined.
How Bitcoin Works (the short version)
Bitcoin is a ledger: a record of every transaction that has ever occurred, maintained simultaneously by thousands of computers worldwide. When you send Bitcoin:
- Your transaction is broadcast to the network
- Miners verify it and include it in a block
- That block is added to the chain, permanently and publicly
- Your recipient can now spend those coins
No bank approves it. No government can block it. No one can reverse it once confirmed.
Your Bitcoin is stored in a wallet, technically a pair of cryptographic keys. The public key is your address (like an account number you share freely). The private key is the proof of ownership, whoever holds it controls the Bitcoin. This is what "not your keys, not your coins" means.
Bitcoin vs Other Cryptocurrencies
There are thousands of cryptocurrencies. Most are experiments, copies, or attempts to improve on Bitcoin. Most have failed to maintain value or relevance over time. Bitcoin remains dominant for several reasons:
- Network effect: The largest, most liquid, most widely accepted cryptocurrency
- Security: The most miners, the most hash power, the most attack-resistant blockchain
- Decentralisation: No company, no CEO, no foundation controls it
- Proven track record: 15+ years of continuous operation without a successful attack
- Fixed supply, genuinely enforced: Many altcoins claim scarcity but have admin keys or governance mechanisms that allow supply changes
Ethereum, Solana, and others serve different purposes and have different trade-offs. Bitcoin's singular focus on being sound money, censorship-resistant, and decentralised is a feature, not a limitation.
Why It Matters
Bitcoin is the first time in human history that ordinary people can hold wealth in a form that cannot be inflated away, seized by governments, or frozen by banks, without trusting any intermediary. For people in countries with broken monetary systems, this is not theoretical. For people in stable economies, it's insurance.
For us at 32Bitcoins, it's also the reason home mining exists: a network this important deserves participants who care about keeping it decentralised.