You know that you need a wallet to store your virtual coins. And just like a bank account, it has a unique address. It looks somewhat like this(15WrztREKezKUyfSrBwKAnNhq2k7Pnhp5U), depending on the cryptocurrency. It seems like a completely randomly generated a string of letters and numbers but in reality, there is a bit more going on. The first thing you need to know is how these
are created. Anyone can create a new wallet by generating a public and private key pair with a certain algorithm.In the case of Bitcoin or Ethereum that is via an elliptical curve digital signature algorithm.

That’s quite a mouthful, but the take away here is that the algorithm will spit out a private key and an associated public key. These keys are mathematically linked to each other. You can take the private key and derive the public key from it. But you cannot take the public key and turn it into the private one.

 These two keys serve a different purpose. The public key will become your wallet’s address, kind of like your bank account number. public keys can be shared with everyone And the private key is your way of proving that you are the owner of the wallet and thus that you can spend the money inside of it. Private keys must be kept to yourself.

It’s only limited by how fast your computer can generate key pairs. However, nobody will know about the existence of your wallet until it receives some coins.

If want to know more details you can read these four articles:

article 1: https://peakd.com/fortnite/@maxmados/how-bitcoin-wallets-work
article 2: https://read.cash/@Crypto.Maniac/how-does-your-bitcoincash-wallet-works-1644b8c8
article 3: https://www.geekersmagazine.com/everything-you-need-to-know-about-cryptocurrency-wallets-in-2020/
article 4: https://www.infocrusader.com/2020/10/What-is-Blockchain-Everything-Explained.html