Understanding the Basics of Cryptocurrency Wallets

Written and Fact-Checked by 1440

Updated September 10, 2024

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A cryptocurrency wallet is a digital tool for storing and managing cryptocurrencies like Bitcoin. It holds currency like a physical wallet, but instead of cash and cards, it contains digital codes known as public and private keys. As the wallet owner, you can use these keys to send, get, and control your cryptocurrency assets.

A public key is like a routing number that you use to receive currencies, while private keys are like passwords necessary to control your funds.

You send or receive currencies like Bitcoin over a digital ledger called the blockchain. Market participants (known as "miners" in the case of Bitcoin) process transactions on the blockchain by decrypting codes. You might also send the currencies in your wallet over the blockchain to an exchange, where you can buy or sell cryptocurrencies or exchange them for a fiat currency.

You need to understand the technology behind wallets if you want to buy, sell, or hold cryptocurrencies. Here is a deeper look at these tools.

Types of Crypto Wallets

There are different types of crypto wallets, each offering advantages and drawbacks. Some are connected to the internet, allowing easy access via a computer or phone. These so-called hot wallets are very convenient and user-friendly. Meanwhile, cold wallets are not connected, providing better security but complicating transactions.

Hot Wallets

Hot wallets connect to the internet via Wi-Fi, a wired connection, or mobile data. They fall into three different subcategories.

  • Web wallets accessed via an internet browser;
  • Mobile wallets contained in smartphone apps;
  • Desktop wallets, which are applications downloaded to a computer.

The primary advantage of these wallets is that they are easy to use. You can transfer currencies instantly and check and manage your assets in real time.

On the other hand, hot wallets are risky because they are more susceptible to hacking, with cyber criminals potentially able to steal your funds.

It's crucial to use strong passwords, enable two-factor authentication, and regularly update the wallet software to mitigate these risks. Despite their vulnerabilities, hot wallets remain popular for everyday use due to their convenience.

Cold Wallets

Cold wallets are not connected to the internet all the time, limiting the risk of hacking but lengthening the time it takes to manage crypto assets.

The wallets come in two varieties.

  • Hardware wallets connect to the internet via Bluetooth or USB to make transactions but then disconnect once currencies get transferred.
  • Paper wallets are simply pieces of paper where you write or print your various keys and codes to identify your coins.

Cold wallets are ideal if you plan to buy cryptocurrency to hold for some time or if you have larger amounts that cyber thieves might target.

At the same time, these wallets are less user-friendly and convenient. You really need to understand the concept of keys if you plan to use a cold wallet.

How Cryptocurrency Wallets Work

Cryptocurrency wallets operate by using a combination of public and private keys. These keys are a series of letters and numbers that create a unique code. They are necessary for receiving, sending, and controlling cryptocurrencies.

Crypto wallets are essential for other blockchain processes, like crypto mining. Miners validate transactions by deciphering cryptographic equations. Once they do, they get a small reward, which is sent directly to their cryptocurrency.

Public and Private Keys

The public key generates an address for your wallet, while a private key allows you to control your funds.

You need a private key to verify your funds and their origin before you start any transactions or attempt to move your cryptocurrencies. Forgetting or misplacing this key means losing access to the currencies in your wallet. They are essentially lost forever unless you can remember the private key.

Address Generation and Management

Wallet addresses are based on public keys. They are created when the public keys go through a process called hashing. Hashing involves putting the public key through a cryptographic function, which delivers a wallet address. Some users have one wallet address, but it's possible to hash different addresses for the same wallet.

It is also possible to encode wallet addresses in QR codes. You can quickly transfer funds by scanning the code instead of typing or copy-and-pasting the wallet address. QRs reduce the risk of typo errors, which can cause you to send the cryptocurrency to the wrong person or give the sender the incorrect wallet address.

Security Features of Cryptocurrency Wallets

Security is important for hot wallets and, to a lesser extent, hardware wallets. Here are some of the security features wallets have.

  • Encryption uses a special key to render data in your wallet unreadable by anyone who does not have the key. Even if someone gets into your wallet, they won't be able to see your private keys.
  • Multi-factor authentication (MFA) adds an extra layer of security by requiring not only a password but also a secondary form of verification, such as a code sent to your mobile device. Both the password and MFA code are necessary to log in.
  • Backup seed phrases are completely unrelated words in random order that you get when opening your wallet. Written down in a secure place in the right order, they can be used to recover the wallet if access is lost.

Some wallets create an extra layer of protection by requiring at least two private keys before executing a transaction. Even if they steal one key, hackers would need the others before they can access your bitcoins.

Choosing the Right Cryptocurrency Wallet

You need to find a crypto wallet that matches your plans, needs, and experience level. Consider the following factors.

  • Security features, such as MFA and encryption, are essential for hot wallets.
  • Compatibility with your chosen cryptocurrency is important. Many wallets are for a single currency or a few related currencies. If you trade Bitcoin, for instance, you need a wallet that is able to handle Bitcoin.
  • Reputation is also vital. Carefully research wallets to ensure the one you choose is secure and offers the necessary guidance and support for new users.

Finally, decide if you want an accessible wallet on your phone or a more secure hardware option that you plug into a USB to access

Common Mistakes To Avoid With Cryptocurrency Wallets

Some wallet owners, especially those new to crypto, sometimes make mistakes. Here are the most common errors and how to avoid them.

  • Neglecting security measures like MFA or encryption can open the door to hackers or thieves who physically steal your phone.
  • Losing private keys or backup seed phrases can leave you without the ability to access your cryptocurrency.
  • Using unverified wallets can expose you to security vulnerabilities or fraud, such as the wallet programmer having access to your keys and stealing your cryptocurrency.

Hot and hardware wallets may also have security updates. Make sure you install these as soon as they're available to avoid the vulnerabilities these updates are meant to fix.

Choosing the right wallet for your needs, securing it, and avoiding common mistakes will help you in your efforts to store and trade cryptocurrencies.