Important warning: cryptocurrency is not located in wallets, but on the blockchain. Wallets are simply a way to store keys that give access to it. Just like your credit card does not contain your money, but provides you access to your bank account.
However, storing keys securely so that only you can access them is very important. And this is how it is achieved in the world of crypto.
All cryptocurrency wallets have two important parts: public and private keys. Each of these is a hash function, a 64-byte sequence of letters and numbers. The public key can be seen by anyone that is using the blockchain. This is your address that you give people when you want them to send you coins.
But only those who have the private key can access the money located at that address. Only with the private key can you spend the digital currency located on your wallet.
Since the private key is very important, and losing it means losing access to all your money, a seed phrase is used to further protect this key. This is a few dozen random words, an input array, which, if hashed, is what gives you the private key. If you know these words, you can always recover the private key. Some wallets don’t even allow you to use a private key directly, relying purely on the seed phrase. Its safe storage is a top priority.
All crypto wallets fall into two broad categories: “hot” and “cold”.
Hot wallets are constantly connected to the network, and the keys for them were also created online. These are websites and programs that allow you to create your account on the blockchain. They are very popular because they are convenient to use if you need to make regular and frequent transactions.
Cold wallets are usually not connected to the network, moreover: the keys were also created without an Internet connection. Such wallets can be stored separately from the main device — say, on a flash drive, on paper or on a hard drive lying in a closet. Cold wallets can be physically touched.
Both options have their pros and cons, and both contain several varieties of wallets within them. So let’s figure out what is right for you.
Cold crypto wallet that can be located on HDD or SSD, but more often than not, it’s just a USB stick that you plug into your PC to connect to the chain. You could also buy several special devices that are additionally protected — say, they contain a fingerprint scanner on their case.
Of course, getting up and connecting such a wallet to your main device is slightly inconvenient. But such wallets have a huge advantage: they cannot be reached via the Internet, and so they can’t be hacked. Hardware wallets are by far the most secure.
This is your best choice if you have a lot of crypto and don’t want to trust anyone with it. All major bitcoin billionaires use hardware wallets. They hide them in a safe place and take many extra precautions. And they use such a wallet a maximum of once or twice per week.
But if you have a small amount of crypto, the loss of which will not drastically affect your life, the most convenient way is to keep your money in a software wallet or on a crypto exchange. Even crypto billionaires usually have two or three of these wallets for more frequent transactions.
One of the types of hot wallets. This is just a program installed on a device (laptop, PC, smartphone). Sometimes even a web app or a Chrome extension.
Such a wallet is suitable for small amounts of crypto, the loss of which will not ruin your life. Better yet, a software wallet is suitable for temporarily storing money that you want to spend soon (for example, if you are paying a freelancer for work or investing in a new digital currency).
Paper wallet is a simple piece of paper where you write down your seed phrase or print out a QR code with your secret key. This piece of paper can be put in a safe or any other place which you think is absolutely secure.
Also, to generate such a wallet, you need to use a special web service that generates public and private keys in the form of a QR code. The most popular basic paper wallet generator is Bitaddress.org.
To further protect themselves, people sometimes tear their paper into several parts, so that the complete code can only be obtained by connecting them all together. This is quite clever, but the downside is that the loss of any of the pieces can lead to the loss of access to the crypto account.
These are third-party businesses that store your private keys, giving you access to them with a username and password. Usually they do not charge any money for these services, but instead offer various financial instruments from which they can earn commissions. These are, for example, such cryptocurrency exchanges as Coinbase or Binance.
In general, all cryptocurrency exchanges can be considered custodial services. Your crypto resides within them, and they “lend” you access to your money. Custodial services are very convenient to use. For example, exchanges allow you to send money both to the wallets of other users inside the service, and to any wallets in any supported blockchains outside of it. As a result, you can easily switch to the desired cryptocurrency on the exact chain you want.
If you trust a particular service, this can be a good option for storing small amounts of crypto. In many ways trusted exchanges and custodials are better than software wallets.
Coinbase.com is a cryptocurrency exchange, that is, a custodian service. Whereas Coinbase Wallet is a cold crypto wallet. Even though they are made by the same company, they are fundamentally different crypto projects.
With Coinbase, your money is essentially stored in an online bank, to which you have access with a username and password. With Coinbase Wallet, you keep a physical wallet with your hands, on a flash drive or on your own computer, and control the funds yourself. This does not mean that it is inherently safer: after all, in real life, wallet theft is more common than bank robberies. Still, to store large amounts of crypto, users generally prefer hardware wallets.
By the way, you don’t need to have a Coinbase account to use Coinbase Wallet. These 2 services are completely separate.
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