Blockchain Health Diaries by Rekha

Today, we send a lot of important information over the internet — like emails, bank details, and business secrets. But the internet is like a public road, so anyone could try to look at that information. That’s why we need to keep it safe. This is where asymmetric encryption helps. It’s a smart way to lock and unlock information so that only the right person can read it. Even if someone tries to peek while it’s being sent, they won’t understand anything. Let’s look at what it means, how it works, and why it’s great for keeping your data safe. ✅ What is Asymmetric Encryption? Asymmetric encryption, also called public-key encryption, uses two different keys instead of one. One key is public , which means anyone can have it to send you a message. The other key is private , and only you keep it safe. When someone sends you a message, they use your public key to lock it. Only your private key can unlock it. This way, you don’t have to share your secret key with anyone, and your data s...

 A crypto faucet is a website or app that gives you small amounts of free cryptocurrency, like Bitcoin or Ethereum, for doing simple tasks. These tasks can include watching ads, solving puzzles, clicking links, or playing games. Once you finish the task, the website gives you a tiny amount of crypto, like a reward. You can collect these rewards over time and send them to your crypto wallet when you reach a certain amount. Crypto faucets were made to help people learn about cryptocurrency and how it works. They are not a way to earn big money, but they can be a fun and easy way to start using crypto. Just be careful and only use trusted websites, because some might be scams. ⚙️ How Does a Crypto Faucet Work? A crypto faucet works by giving small amounts of free cryptocurrency to users who complete simple tasks. First, you sign up on a faucet website and link your crypto wallet. Then, you do easy activities like watching ads, solving puzzles (captchas), clicking on links, playing ga...

  Imagine a group of friends trying to agree on something — like what movie to watch or where to go for lunch. Now imagine that one or two of those friends are lying or trying to confuse everyone. How can the group still come to the right decision? This is the basic idea behind Byzantine Fault Tolerance (BFT) . In the world of blockchain and crypto , different computers (called nodes ) need to agree on what’s happening — like which transaction is real, or who owns how much Bitcoin. But sometimes, some of these computers might be hacked, broken, or dishonest . BFT helps the system keep working even if some nodes are acting badly. It makes sure the honest majority can still agree and keep the network safe. So in short: Byzantine Fault Tolerance means the system can still make correct decisions, Even when some parts are lying, broken, or hacked , Which keeps your crypto network secure and trustworthy . It’s like making sure the group picks the right movie — even if...