A blockchain is a shared digital ledger that permanently records transactions across a network of computers, making it nearly impossible to alter or fake. If you’ve traded Bitcoin or any other cryptocurrency through an Australian broker, every transaction you made was verified and stored on a blockchain.
How Blockchain Works — A Practical Example
Imagine you buy A$1,000 worth of Bitcoin through an ASIC-licensed crypto platform. That purchase is bundled with thousands of other transactions into a “block” of data. Once verified by a network of computers (called nodes), that block is added to a chain of previous blocks — forming the blockchain.
Each block contains a unique code called a “hash,” along with the hash of the block before it. If someone tried to tamper with your A$1,000 transaction, the hash would change, instantly breaking the chain and alerting the entire network. This is why blockchain is often described as tamper-resistant — altering one record would require rewriting every block that follows it, across thousands of computers simultaneously.
For Australian traders watching the Bitcoin market, this means every price movement and trade is underpinned by a system that doesn’t rely on a central bank or single company to keep the records honest.
Why Blockchain Matters for Australian Traders
Blockchain is the foundation of every cryptocurrency you can trade or invest in — from Bitcoin to Ethereum to smaller altcoins. Without it, there would be no decentralised way to confirm who owns what. Understanding blockchain helps you grasp why crypto assets behave differently from shares or forex, and why network congestion or upgrades (called “forks”) can move prices sharply.
From a regulatory angle, ASIC has been paying close attention to blockchain-based assets. Australian exchanges and brokers offering crypto products must hold an Australian Financial Services Licence (AFSL) or comply with ASIC’s Digital Asset guidance. This means the platforms you use are required to keep your funds separate from their own — a protection that doesn’t exist on many overseas, unlicensed exchanges.
The quality of the blockchain network underlying an asset directly affects its security, transaction speed, and long-term value — all things that matter when deciding whether to trade a crypto CFD or buy the underlying asset outright. If you’re new to this space, the crypto beginner guide on KolaTrading is a useful starting point before placing your first trade.
Blockchain vs Cryptocurrency
Blockchain is the underlying technology; cryptocurrency is one application built on top of it. Think of blockchain like the internet, and cryptocurrency like email — one is the infrastructure, the other is a service that runs on it. Blockchain is also used outside of finance, in areas like supply chain tracking and digital identity. For most Australian traders, cryptocurrency is the more important factor to check when deciding what to trade, but understanding blockchain helps you evaluate the strength and reliability of any crypto asset you’re considering.
What to Check When Comparing Brokers
- ASIC licence and custody model: Confirm the broker holds an AFSL and keeps client crypto holdings in segregated cold storage wallets, not pooled accounts that could be at risk if the broker fails.
- Which blockchain networks are supported: Some brokers offer crypto CFDs (you don’t own the underlying asset), while others offer spot crypto where your coins sit on an actual blockchain. Know which type you’re getting before depositing funds.
- Withdrawal and transfer options: If you want to move crypto to a personal crypto wallet, check whether the broker supports on-chain withdrawals and what fees apply.
- Range of blockchain assets available: Platforms like eToro offer a wide selection of crypto assets alongside stocks and CFDs, making it easier to diversify without opening multiple accounts.
- Network fees (gas fees): On networks like Ethereum, transaction fees vary with congestion. A good broker will disclose these upfront so you’re not surprised by costs when moving funds.
See our picks for the best crypto platforms in Australia — all ASIC-licensed, all live-tested by our team.
Trading CFDs carries significant risk. 70–80% of retail accounts lose money. ASIC regulated. We may earn commission via links.