Crypto Foundations
Lesson 2 of 5
A beginner-friendly path through crypto risk, exchanges, wallets, funding, fees and Australian registration context.
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Key takeaways
- A crypto exchange can provide a way to exchange money or crypto assets, but trading and custody are separate concepts.
- In a custodial arrangement, a service controls the private keys used to authorise blockchain transactions on your behalf.
- In self-custody, you control the private keys and take responsibility for protecting and recovering them.
- AUSTRAC VASP registration relates to Australia's AML/CTF framework; it is not the same as ASIC approval of a platform or crypto asset.
What a crypto exchange does
A crypto exchange or trading service can provide a venue or service for exchanging Australian dollars for crypto assets, crypto for money, or one crypto asset for another. The exact model varies: some services operate an order book, some quote prices directly, and some provide multiple transaction paths.
Before comparing fees, identify what service is actually being provided. A quoted instant-buy price, an order-book trade and a transfer to an external wallet can involve different costs and different operational steps.
What a crypto wallet actually stores
A crypto wallet is best understood as a way of managing the private keys that authorise transactions involving crypto assets on a blockchain. Moneysmart distinguishes software or hot wallets from hardware or cold wallets.
The crypto asset is not a physical coin stored inside a device. The wallet manages credentials used to control blockchain transactions. Losing access to private keys or recovery information can therefore mean losing access to the crypto.
Custodial wallets
With a custodial service, the platform or custodian controls the private keys used for assets held on your behalf. This can simplify account access, trading and recovery, but it means you depend on the service's custody arrangements, security controls, withdrawal processes and terms.
Ask how holdings are recorded, whether assets can be withdrawn to an external wallet, what withdrawal controls apply and what happens if access to the service is disrupted.
Visual explainer
Who controls the private keys?
Custodial
- Service controls the private keys
- User depends on the service's access and withdrawal processes
- Recovery may be account-based
Self-custody
- User controls the private keys
- User is responsible for secure backup and recovery
- Wrong-address or lost-key mistakes can be irreversible
Self-custody wallets
With self-custody, the user controls the private keys. That removes reliance on an exchange to authorise ordinary wallet transactions, but it also transfers responsibility for key security and recovery to the user.
A hardware wallet can keep private keys offline, which can reduce some online attack exposure. It does not remove risks such as sending assets to the wrong address, losing recovery information, interacting with malicious software or misunderstanding a transaction.
What changes when you withdraw crypto
Moving crypto from an exchange account to an external wallet is a blockchain transfer. The destination address and network must be compatible with the asset and transfer method. Blockchain transfers can be difficult or impossible to reverse once confirmed.
A withdrawal can also introduce provider withdrawal fees, network fees or minimum amounts. That is why the later funding and fee lessons separate trading costs from transfer costs rather than presenting one headline percentage.
Visual explainer
A simplified crypto custody and transfer path
Trading, custody and blockchain transfer are related but distinct steps.
AUD
Funding method
Exchange
Trade or conversion
Custodial balance
Service controls keys
Withdrawal
Address + network + possible fees
Self-custody wallet
User controls keys
AUSTRAC registration is one check, not an endorsement
AUSTRAC requires businesses providing designated virtual-asset services with the relevant Australian connection to register as VASPs. AUSTRAC made its public VASP register available in June 2026 so people can verify registration status.
Registration is part of Australia's anti-money-laundering and counter-terrorism-financing framework. ASIC separately explains that financial-services protections depend on whether a digital asset or related service is subject to the financial-services laws. Registration should therefore be treated as one factual check, not as a recommendation, investment-quality score or guarantee against loss.
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Lesson 2 of 5: How crypto exchanges and wallets work
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Crypto exchange funding in Australia
Understand deposits, withdrawals and variable funding costs.
Continue to lesson 3 · ~6 min →
Sources
Sources were reviewed on 24 September 2026. Provider pricing and product terms can change; verify current terms with the provider before acting.