The Bitcoin Network — Explained for Canadians
The Three Layers
1. Nodes
Full nodes are computers running Bitcoin Core software.
They verify and store every Bitcoin transaction ever made — currently hundreds of gigabytes of blockchain data.
Anyone can run a node. There are over 15,000+ globally.
Nodes enforce the rules.
Invalid transactions or blocks are rejected automatically, regardless of who created them.
2. Miners
Miners are specialized computers (ASICs) competing to add the next block to the blockchain.
They secure Bitcoin using Proof of Work — solving computational puzzles.
The winning miner earns:
- Newly issued Bitcoin (currently 3.125 BTC)
- Transaction fees
Canada is a major mining jurisdiction due to abundant low-cost electricity.
3. Wallets
Wallets do not store Bitcoin directly.
They store your private keys — the cryptographic proof that you own Bitcoin.
Wallet software connects to the Bitcoin network to:
- Check balances
- Broadcast transactions
- Receive Bitcoin
Why the Network Is Secure
No single point of failure.
Thousands of nodes around the world maintain identical copies of the blockchain.
Attacks are extremely expensive.
Rewriting Bitcoin’s blockchain would require controlling more than 50% of the global mining hashrate — costing billions in hardware and electricity.
15+ years of uninterrupted operation.
Bitcoin has never been hacked at the protocol level. It is the most battle-tested digital monetary network in existence.
For Canadian Investors
Understanding the Bitcoin network helps explain why Bitcoin is trusted — not because of any company or government promise, but because of:
- Mathematics
- Distributed consensus
- Economic incentives
Bitcoin works because no single person or institution controls it.
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See also: Bitcoin Blockchain Explained Canada | Bitcoin Proof of Work Canada | Bitcoin Mining Canada