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Public Wallet Address: What Is It? Crypto Terms Explained

Public Wallet Address: What Is It? Crypto Terms Explained
By Guest Author
April 22, 2024

Before sending your first cryptocurrencies, you should understand these base terms: wallet address, public and private keys. With them at hand, your crypto payments will go smoothly and safely. And it’s time we unraveled these notions in more detail. Buckle up!


It All Starts With Cryptography

In the crypto world, cryptography is like a secret language. When you make a transaction, your digital assets are encrypted, or locked up, using complex mathematical algorithms. These codes render your funds unintelligible to unauthorized parties.


Cryptography involves several techniques:


  • Encryption that transforms plaintext data into ciphertext, unreadable to anyone without the corresponding decryption key;
  • Hashing that converts data of any size into a fixed-size string of characters;
  • Digital signatures that authenticate the integrity and origin of digital messages or documents;
  • Key exchange protocols that enable secure communication between parties without the risk of interception or eavesdropping.


But how is cryptography connected to crypto payments and all these terms: wallet address, public key, private key? Hm? Let’s find out!


Wallet Address: What It Is and How To Get It

A wallet address, or a public address, is a unique identifier to send and receive digital assets. It functions similarly to a bank account number in traditional finance, but with an important distinction: it's designed for blockchain networks.


The wallet address consists of a string of alphanumeric characters and ranges from 26 to 35 characters in length, depending on the cryptocurrency. For example, a Bitcoin address starts with "1" or "3", Ethereum addresses can be recognized with "0x".


This public address is created when you set up a crypto wallet. You, the user, are the one who forms the wallet address. Just like creating a new email account—you choose a wallet provider, follow their instructions to set up the crypto wallet, and then the wallet generates a unique address for you.


But how?


Public and Private Keys Come Into Play

Let's break down how your crypto wallet generates an address:


  1. When you create a cryptocurrency wallet, the first step is generating a private key. It resembles the master key to your digital assets. It's randomly generated and known only to you.

  2. From this private key, a public key is derived. The public key resembles a digital fingerprint mathematically linked to your private key. However, the public key is safe to share with others.

  3. Then, the public key undergoes a hashing process. That’s when you get a wallet address. The public key is hashed, or converted into a fixed-size string of characters, to produce a shorter and more manageable string. This is your wallet address.


Now it’s time to discuss the keys in greater detail. Shall we?


Private Key

What Is It?

A private key is a unique, secret piece of data used to sign transactions and gain access to cryptocurrency funds. Think of it as the password to your cryptocurrency wallet. A long, randomly generated string of letters and numbers gives you access to your digital funds. And this is your private key.


What About Functions?

Signature. When you want to send cryptocurrency from your wallet to another address, you use your private key to create a digital signature for the crypto payment. This signature is mathematically linked to the transaction data and is unique to your private key. It proves that you are the rightful owner of the funds and ensures the transaction's authenticity.


Access. Private keys are also used to access and control your cryptocurrency wallet. To view your balance, send funds, or perform other actions with your wallet, you must prove ownership by providing your private key. Access to the private key grants full control over the cryptocurrency in your wallet, so keep it secure and confidential.


What Is A Secret Phrase?

You might have heard one of the following terms "seed phrase," "mnemonic phrase" or "recovery phrase." All these refer to the same concept, a secret phrase that consists of a sequence of words used to back up and recover a cryptocurrency wallet. It's typically composed of a set number of randomly chosen words (commonly 12 or 24 words) from a predefined list of words.


Secret phrases are easy to write down and remember. Along with that, thet guarantee a high level of security. Each word in the phrase represents a piece of your wallet's private key information. Even if you lose your device or forget your password, you can use the seed phrase to regain control of your funds.


Here's how secret phrases work. When you create a new cryptocurrency wallet, you're usually prompted to generate a secret phrase. You write the words in the exact order and store them securely, preferably offline.


If you ever lose access to your wallet, you can restore access using the secret phrase. Most wallet software allows you to input the mnemonic phrase during the recovery stage and return access to your funds.


You get that, right? Let’s move on to public keys.


Public Key

What Is It?

A public key is a cryptographic key shared openly and used for encryption, verification, or authentication. It's derived from a corresponding private key through a mathematical process and forms a key pair. While the private key is kept secret, the public key is freely distributed.


What About Functions?

Encryption is one of the primary functions of a public key. Imagine you want to send crypto to your friend. Your wallet uses your friend’s public key to encrypt the transaction details. The encrypted transaction is then broadcasted to the cryptocurrency network. When your friend receives the encrypted transaction, they use their private key to decrypt the crypto payment. No one else can access the funds you’ve sent, since it’s only your friend who has a matching wallet address, public and private keys.


Verification is another function of public keys. When you initiate a blockchain transaction, you digitally sign it with your private key. This generates a unique signature specific to the crypto transaction. Miners validate and include your signed transaction in a block, which is then added to the blockchain. Anyone can verify the authenticity and integrity of your crypto payment by using your public key to decrypt the signature. If the decrypted signature matches the transaction details and your public key, it proves transaction genuine and untampered.


Authentication is also what public keys do. Opening your cryptocurrency wallet, you authenticate yourself using your private key. The wallet software verifies your identity by decrypting the authentication message using your public key. If the decrypted message matches the expected value, you get into your wallet.


Now you have overviewed the major terms and can start buying and sending cryptocurrencies. To upgrade your skills, check out the following tips and instructions.


Don’t Make These Mistakes: Common Misconceptions About Public Wallet Address and Private Key


Misconception 1: Wallet Address and Private Key are Interchangeable

Here's the thing. Your public wallet address is like your digital mailbox where people can send cryptocurrencies. It's a long string of letters and numbers, kind of like an email address. You share it with others when you want them to send you funds.


On the other hand, your private key is like the key to your digital safe where your cryptocurrency is stored. It's a secret code that only you should know. With your private key, you can manage your funds: send them to someone else or transfer them to a different wallet.


While both the public wallet address and private key are important parts of your cryptocurrency wallet, they serve different purposes. The public address is for receiving funds, while the private key is for accessing and controlling your funds. They're not the same thing and shouldn't be treated interchangeably.


Misconception 2: Public Wallet Address Contains Private Key Information

That’s not true. A wallet address is akin to your digital ID number. It's created using a mathematical process that does involve your private key, but it doesn't contain any private key information itself. Think of it like a mailing address—it helps people know where to send your mail, but it doesn't reveal anything about the contents of your letters.


Your private key, in turn, unlocks your digital safe where your cryptocurrency is stored. It's completely separate from your public address and is never shared with anyone else.


Misconception 3: Private Key Recovery Requires Public Wallet Address

Just like we described above, when you set up a cryptocurrency wallet, you're usually given a secret (=recovery) phrase. Here's the kicker: you don't need the public address to recover your wallet. The recovery process is solely based on the secret phrase. The public wallet address is just a way to identify your wallet on the blockchain—it's not required for the recovery process.


So, if you ever lose access to your cryptocurrency wallet, you just need your secret phrase to get back in the game. No public addresses!


What Can Go Wrong? Practical Tips To Defend Your Assets

Time for practice. Let’s secure your wallet!


Share Your Wallet Address Safely

  1. When sharing your wallet address with someone, use encrypted messaging platforms or secure communication channels. Don’t share it openly on social media or public forums, where it could be intercepted by malicious actors.

  2. Verify the identity of the recipient before sharing your wallet address. Ensure you send it to the correct person or entity to prevent sending funds to the wrong address.

  3. Only share your wallet address with trusted individuals or entities. Avoid sharing it with strangers or individuals you don't trust, as they could misuse the information.

  4. Be cautious when scanning QR codes to share your wallet address. Confirm that the QR code is from a trusted source and hasn't been tampered with to redirect funds to a different address.

  5. Consider using several wallet addresses for different purposes. This adds an extra layer of privacy and security by preventing others from tracing all your crypto payments back to a single address.

  6. If you're sharing your wallet address with someone new to cryptocurrencies, educate them about the importance of keeping it private and secure. Remind them not to share it with anyone else and to store it safely.

  7. Beware phishing attempts, where attackers impersonate legitimate entities to trick you into revealing your wallet address or other sensitive information. Always double-check the authenticity of requests before sharing any personal or financial details.

  8. Keep an eye on your wallet transactions to detect any suspicious activity. If you notice any unauthorized payments or unexpected changes in your balance, take immediate action to secure your wallet and funds.

  9. Check the privacy settings of your wallet software or platform to ensure that your wallet address is not publicly visible or shared without your consent. Adjust settings as needed to maintain your desired level of privacy and security.

I’Ve Sent My Crypto To The Wrong Address! What To Do?

  1. First, verify that you indeed sent the funds to the wrong address. Review the transaction details, including the recipient's address, to confirm the mistake.

  2. If you know the recipient or if the address belongs to an exchange or service provider, contact them immediately. Explain the situation and provide proof of the transaction. The recipient can assist you in recovering the funds, especially if the payment hasn't been processed.

  3. Some blockchain networks support transaction reversibility in certain cases: unconfirmed or incomplete transactions. Check the blockchain explorer for the cryptocurrency you sent to see if there's an option to cancel or reverse the transaction. However, this option may not be available for all transactions or networks.

  4. If you cannot resolve the issue, consider seeking assistance from a professional cryptocurrency recovery service or legal counsel specializing in cryptocurrency matters. These experts may help you, although their services may come with fees.

  5. Be prepared for losses. Unfortunately, funds sent to the wrong address may be irretrievable, especially if the recipient is unknown or uncooperative, or if the transaction has already been confirmed on the blockchain. While disheartening, the only solution here is to accept the loss.


Mistakes happen, but it's essential to learn from them to prevent similar incidents in the future. Double-check recipient addresses before sending funds, use copy-paste to avoid manual input errors, and consider implementing additional security measures, such as multi-signature crypto wallets or confirmation prompts, to reduce the risk of accidental transfers.


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