Wallets in simple terms
A wallet manages keys, not coins
Bitcoin does not sit inside a wallet application or hardware device. Bitcoin ownership is recorded on the blockchain.
A wallet manages the private keys that allow you to authorise transactions. It also generates receiving addresses, tracks balances and helps you review payments.
The most important question is not where the app is installed. It is who controls the keys and how those keys can be recovered.
Core idea
The wallet is the tool. The private keys are what provide control over the bitcoin.
Private key
Authorises spending
A private key is secret information used to sign Bitcoin transactions. Anyone who obtains it may be able to spend the associated funds.
Wallet
Organises and uses keys
A wallet helps generate addresses, monitor transactions and sign payments using the underlying private keys.
Hot versus cold
Convenience and isolation
Hot wallet
Connected and convenient
A hot wallet operates on an internet-connected device. It is easier to access but has a larger attack surface.
Mobile wallets
Desktop wallets
Browser wallets
Wallets connected to online services
Cold storage
Separated from online devices
Cold storage keeps signing keys away from normal internet-connected environments and is commonly used for long-term savings.
Hardware wallets
Offline signing devices
Air-gapped computers
Properly secured physical backups
A hardware wallet is often described as cold storage, but the complete security of the setup also depends on backups, transaction verification and how the device is used.
Wallet categories
Common Bitcoin wallet types
Mobile wallet
A wallet app installed on a smartphone. Mobile wallets are convenient for smaller balances and regular payments.
Best for
Everyday spending
Connection
Usually online
Key control
Can be self-custodial
Strengths
Convenient and portable
Easy to scan payment QR codes
Suitable for smaller amounts
Risks
Phone loss or damage
Malicious apps or compromised devices
Less suitable for large long-term holdings
Desktop wallet
Wallet software installed on a desktop or laptop computer. It can offer more control and advanced features.
Best for
Regular desktop use
Connection
Usually online
Key control
Can be self-custodial
Strengths
Larger screen for transaction review
Can connect to your own Bitcoin node
Often supports advanced wallet features
Risks
Computer malware
Unverified software downloads
Device failure without a backup
Hardware wallet
A dedicated signing device designed to keep private keys separated from a general-purpose computer or phone.
Best for
Long-term savings
Connection
Keys remain isolated
Key control
Self-custodial
Strengths
Private keys remain on the device
Transaction details can be checked on-device
Reduced exposure to computer malware
Risks
Supply-chain tampering
Incorrect recovery backup
Blindly approving a malicious transaction
Paper backup
A physical written or printed record of recovery information. This is a backup method, not a complete wallet experience.
Best for
Recovery backup
Connection
Offline
Key control
Depends on storage
Strengths
Not connected to the internet
Simple to create
Useful as one recovery copy
Risks
Fire, water and physical damage
Loss or theft
Easy to copy incorrectly
Multisignature wallet
A wallet that requires more than one private key to authorise a transaction.
Best for
Advanced security
Connection
Depends on setup
Key control
Distributed control
Strengths
Reduces single points of failure
Keys can be stored in separate locations
Useful for shared or high-value custody
Risks
More complex backups
More difficult recovery
Poor setup documentation can cause loss
Custodial account
An exchange or service holds the keys on your behalf. You have an account balance rather than direct control of the private keys.
Best for
Trading and temporary access
Connection
Service controlled
Key control
Third-party custody
Strengths
Simple account recovery
Easy trading access
No seed phrase management
Risks
Withdrawal restrictions
Company failure or insolvency
Account compromise or seizure
Custodial account
A company controls the keys
You depend on the service to approve withdrawals, protect the funds and remain operational.
Self-custodial wallet
You control the keys
You can authorise transactions independently, but you are responsible for security and recovery.
A wallet can be an app, desktop program or hardware device. The key distinction is whether you or a third party controls the private keys.
Choosing a wallet
Match the wallet to the purpose
There is no single wallet that is best for every person or every amount. A sensible setup may use more than one wallet for different purposes.
How often will you spend?
Frequent spending may suit a mobile or desktop wallet. Long-term savings usually benefit from stronger isolation.
How much are you protecting?
Larger balances justify more time, stronger backups and more careful recovery planning.
Do you understand the recovery process?
Do not store significant funds until you can confidently explain how the wallet is recovered.
Can the wallet connect to your own node?
A wallet connected to your own node can improve privacy and independent verification.
Can you verify transaction details?
The wallet should make it easy to check addresses, amounts and fees before signing.
Spending wallet
Small balance and convenient access.
Savings wallet
Stronger isolation and carefully tested recovery.
Node-connected wallet
Improved privacy and independent verification.
Warning signs
Stop before entering recovery information
The wallet asks you to type a seed phrase into a website
The device arrives with a recovery phrase already created
The software is downloaded from an unofficial source
The wallet claims funds cannot be recovered without the company
The app pressures you to act quickly
The product hides how keys are created or stored
Lesson summary
The important points
A wallet manages keys and transactions; it does not physically hold bitcoin.
Hot wallets prioritise convenience, while cold storage prioritises isolation.
Mobile, desktop and hardware wallets can all be self-custodial.
A custodial account means a third party controls the keys.
The most suitable wallet depends on the amount, purpose and recovery plan.
Never enter a seed phrase into a website or untrusted application.