Last Updated: 21 September 2023

Crypto Wallets Explained: What it is and how it works

Discover what a cryptocurrency wallet is, how it works, what are the types and what are the benefits of using with tips on how to choose the best one.

What is a Cryptocurrency Wallet?

A cryptocurrency wallet is like a digital equivalent of a physical wallet. It allows you to store, send, and receive cryptocurrencies, such as Bitcoin, Ethereum, or any other digital assets. Just as a physical wallet holds cash and cards, a cryptocurrency wallet holds your digital coins and tokens. However, it's important to note that cryptocurrencies exist only in the blockchain, and the wallet simply provides a way to interact with them securely.

How Does It Work?

Cryptocurrency wallets, whether referred to as hot or cold wallets, play a crucial role in managing digital assets. Here's how they work:

1. Generating Key Pairs and Addresses:

  • Cryptocurrency wallets do not actually store cryptocurrencies like physical wallets store cash. Instead, they act as a gateway to interact with the blockchain. When you create a new cryptocurrency wallet, it generates pairs of public and private keys.

2. Public and Private Keys:

  • Public Key: A public key is like your cryptocurrency address. It's used to receive payments from others. In your example, when Alice wants to receive Bitcoin from Bob, she provides Bob with her Bitcoin address, which is derived from her public key.
  • Private Key: The private key is the most sensitive and important part of a cryptocurrency wallet. It is used to sign transactions and access funds. Alice should never share her private key with anyone. Losing her private key means losing access to her coins.

3. Transaction Process:

  • When Bob sends Bitcoins to Alice, the transaction is recorded on the blockchain, but the coins never physically move. Instead, they are transferred from Bob's address to Alice's address on the blockchain.

4. Security:

  • Security is paramount. Alice should safeguard her private key at all costs. If she loses her computer or smartphone, she can still access her coins using the private key on another device or wallet.
  • Private keys are what truly control cryptocurrency ownership. Anyone who knows Alice's private key can access her funds, so it should be kept secret and secure.

5. Seed Phrases:

  • Many modern wallets use seed phrases for convenience and security. A seed phrase is a sequence of words that serves as a master key. It can be used to generate multiple private keys and addresses.
  • Instead of backing up each private key individually, Alice only needs to securely store her seed phrase. This phrase can recover all her keys and addresses if her wallet is lost or compromised.

Types of Cryptocurrency Wallets

Hot Wallets (Online Wallets): Hot wallets are cryptocurrency wallets that are connected to the internet. They are convenient for users who need frequent access to their funds but may have some security trade-offs:

  1. Web Wallets: These wallets are accessible through a web browser interface. Users don't need to download or install any software. Examples include wallets provided by cryptocurrency exchanges like Binance. They are convenient but less secure compared to cold wallets.
  2. Desktop Wallets: Desktop wallets are software programs that users download and install on their local computers. They offer greater security compared to web wallets because the private keys are stored locally. However, they are still considered hot wallets as they are connected to the internet.
  3. Mobile Wallets: Mobile wallets are designed as smartphone applications, allowing users to manage their cryptocurrencies on the go. Trust Wallet is an example of a mobile wallet. While convenient, mobile wallets also fall under the hot wallet category.

Cold Wallets (Offline Wallets): Cold wallets are cryptocurrency wallets that operate offline, providing enhanced security due to their lack of internet connectivity:

  1. Hardware Wallets: Hardware wallets are physical electronic devices that generate and store cryptocurrency keys offline. They use random number generators (RNG) to create public and private keys. Examples include Ledger Nano S and Trezor. Hardware wallets are highly secure and are suitable for long-term storage but may not be as convenient for frequent trading.
  2. Paper Wallets: A paper wallet is a physical piece of paper on which a blockchain address and its corresponding private key are printed, often as QR codes. While they offer a high level of security, they are considered outdated and not suitable for partial fund transfers. If you spend from a paper wallet, it's best to move the entire balance to another wallet due to security concerns.
  3. Cold Storage: Some users also store cryptocurrency on offline devices, like a dedicated computer or USB drive, to keep their keys away from the internet. This is less common but provides an extra layer of security.

Security Considerations

Cryptocurrency wallets can be categorized as "hot" or "cold" based on their internet connectivity:

  • Hot Wallets: These are connected to the internet and are more vulnerable to online attacks. They are suitable for everyday transactions but should not hold large amounts of cryptocurrency.
  • Cold Wallets: These are offline wallets, like hardware wallets or paper wallets, and are highly secure from online threats. They are recommended for storing significant amounts of cryptocurrency.

In summary, cryptocurrency wallets are essential tools for managing your digital assets. They consist of public and private keys and come in various forms, each with its own level of security. It's crucial to choose the right wallet based on your needs and the amount of cryptocurrency you intend to store and transact with.

Crypto Wallets Explained

How to Choose a Crypto Wallet

Here are some tips for choosing the best cryptocurrency wallet based on the provided information:

  1. Cold vs. Hot Wallets: Consider your risk tolerance. If you're very concerned about security and want to keep your cryptocurrency offline, opt for a hardware wallet. Hardware wallets are like "cold" storage because they are not connected to the internet, making them less susceptible to online threats. However, if you need more frequent access to your cryptocurrency and are comfortable with online services, a "hot" wallet, such as a software wallet or an exchange wallet, may be more convenient. Just prioritize security.
  2. Security: Regardless of the type of wallet you choose, prioritize security. Look for wallets with strong security features, including robust password requirements and two-factor authentication (2FA). Multi-factor authentication adds an extra layer of protection to your wallet.
  3. Blockchain Support: If you have specific cryptocurrencies in mind that you want to store or use, make sure the wallet you choose supports those particular cryptocurrencies. Not all wallets support every coin or token.
  4. Integration and Access: Consider how the wallet integrates with your chosen crypto exchange or trading platform. Some wallets are designed to work seamlessly with specific exchanges, making it easier to transfer funds between your wallet and the exchange. Check if the wallet offers mobile apps or desktop versions, depending on your preferred method of access. Mobile wallets are convenient for on-the-go transactions, while desktop wallets may offer more advanced features.
  5. Usability: Evaluate the user-friendliness of the wallet. A good wallet should have an intuitive interface that allows you to manage your funds easily.
  6. Backup and Recovery: Ensure that the wallet provides a secure way to back up and recover your funds. For hardware wallets, this often involves a recovery seed phrase. Make sure you understand the backup process and keep your recovery information safe.
  7. Community and Reviews: Research user reviews and feedback from the cryptocurrency community. A well-established wallet with a positive reputation is more likely to be trustworthy and secure.
  8. Customer Support: Check if the wallet offers customer support in case you encounter any issues. Responsive customer support can be invaluable in times of need.
  9. Cost: Consider the cost associated with the wallet. Some wallets are free, while hardware wallets typically have a one-time purchase cost. Factor in any fees associated with using the wallet.
  10. Regular Updates: Ensure that the wallet receives regular updates and security patches. This is crucial for staying protected against evolving threats.

Remember that the "best" wallet can vary depending on your individual needs and preferences. It's often a good practice to diversify your holdings by using different types of wallets for different purposes, such as a hardware wallet for long-term storage and a software wallet for everyday transactions. Always prioritize security and thorough research when choosing a cryptocurrency wallet.

Why are Crypto Wallets Important

Crypto wallets are critically important in the world of cryptocurrencies, as illustrated by the unfortunate case of the San Francisco man who forgot his password and could potentially lose access to over $300 million worth of Bitcoin. Here's why crypto wallets are crucial:

  1. Private Key Protection: Cryptocurrency wallets, like Bitcoin wallets, are essential because they safeguard the private keys associated with your digital assets. The private key is like the password to your cryptocurrency holdings, and it must be kept safe and confidential. Without access to your private key, you can't control or access your funds.
  2. Ownership and Control: Cryptocurrency wallets provide you with true ownership and control over your digital assets. When you hold your private key, you are in complete control of your funds. In contrast, storing cryptocurrency on an exchange or with a third-party service means you're trusting them to safeguard your private key, potentially exposing your holdings to security risks.
  3. Storage Options: Crypto wallets offer various storage options to cater to your needs. These include hot wallets (connected to the internet) and cold wallets (offline storage). Hot wallets are suitable for frequent transactions, while cold wallets, like hardware wallets, are ideal for long-term storage and enhanced security.
  4. Security Considerations: The San Francisco man's predicament highlights the importance of security. Storing your private keys on highly secure hardware wallets or using cold storage methods minimizes the risk of losing access to your cryptocurrency due to forgotten passwords or hacking attempts.
  5. Recovery Options: Many crypto wallets, especially hardware wallets, provide recovery options, such as a recovery seed phrase. This seed phrase allows you to recover your cryptocurrency holdings even if you lose or damage your wallet. It's a crucial backup measure to protect against unforeseen circumstances.
  6. Freedom and Accessibility: Cryptocurrency wallets provide the freedom to transact and manage your assets without reliance on third-party intermediaries. You can send, receive, and store cryptocurrencies independently, giving you more control over your financial assets.
  7. Diversification: Using different types of crypto wallets, such as a combination of hot and cold wallets, allows you to diversify your storage methods based on your usage and security needs. This minimizes risks associated with a single point of failure.

Custodial VS Non-Custodial Wallets

Custodial and non-custodial wallets are two different types of cryptocurrency wallets, and each has its own set of characteristics and considerations:

Custodial Wallets:

Definition: Custodial wallets are cryptocurrency wallets where a third party, such as a cryptocurrency exchange, has control over your private keys. In other words, they hold your keys on your behalf.

Examples: Cropty Wallet, Binance, Gate.io, and other cryptocurrency exchanges often offer custodial wallet services.


  1. Ease of Use: Custodial wallets are usually easy to set up and use, making them suitable for beginners.
  2. Convenience: You don't have to worry about managing your private keys or remembering recovery phrases.
  3. Support: Customer support is typically available if you encounter any issues.


  1. Lack of Control: Since the exchange holds your keys, you don't have full control over your cryptocurrency. If the exchange experiences downtime or security breaches, your funds could be at risk.
  2. Security Risks: Relying on a third party introduces security risks. If your account is compromised, you may lose access to your assets.

Non-Custodial Wallets:

Definition: Non-custodial wallets are cryptocurrency wallets where you have full control over your private keys. You generate and manage your keys independently.

Examples: Atomic Wallet, MetaMask, Exodus, and other software wallets often fall into the non-custodial category.


  1. Control: You have complete control over your cryptocurrency, including your private keys and seed phrases.
  2. Security: Non-custodial wallets are considered more secure because you are responsible for safeguarding your keys.
  3. Ownership: You truly own your cryptocurrency, and it cannot be seized or controlled by a third party.


  1. Responsibility: With great control comes great responsibility. You must securely store your private keys and seed phrases, as losing them can result in permanent loss of your assets.
  2. Learning Curve: Non-custodial wallets may have a steeper learning curve, especially for beginners who need to understand key management and security practices.

Choosing Between Custodial and Non-Custodial Wallets:

The choice between custodial and non-custodial wallets depends on your preferences and needs:

  • Security: If you prioritize security and want full control over your cryptocurrency, non-custodial wallets are the better choice. You are responsible for your own keys and assets.
  • Convenience: Custodial wallets are more convenient and user-friendly, making them suitable for those who are new to cryptocurrencies or prefer a hassle-free experience.
  • Trading: If you actively trade cryptocurrencies, you may need to use custodial wallets provided by exchanges for ease of access and trading.
  • Long-Term Holding: For long-term holding and cold storage of significant cryptocurrency holdings, non-custodial wallets are recommended for enhanced security.

Ultimately, the choice between custodial and non-custodial wallets comes down to your level of comfort with managing your private keys and your specific use case in the world of cryptocurrencies.

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