LUTO

🎈Happy 41st birthday to Cristiano ronaldo 🐐🐐 THE TRUE GOAT

🎈Happy 41st birthday to Cristiano ronaldo 🐐🐐

We’re getting closer to the coding part 👀

Day 4 Summary — Bitcoin vs Ethereum Today I learned that Bitcoin and Ethereum are both blockchains, but they serve different purposes. Bitcoin was created to be decentralized digital money. Its main goal is to store and transfer value securely, similar to digital gold. It is simple and focused mostly on payments. Ethereum, on the other hand, is a programmable blockchain. It allows developers to build smart contracts and decentralized applications (DApps), such as DeFi platforms, NFT projects, games, and more. Conclusion: Bitcoin is mainly for digital money, while Ethereum is designed to run applications on the blockchain.

✅ DAY 4/30 Bitcoin vs Ethereum (They’re NOT the Same) Before today I thought Ethereum was just “another crypto like Bitcoin.”...Nahhh. Bitcoin and Ethereum are built on blockchain, but they were designed for different purposes. 🟠 BITCOIN — Digital Money Bitcoin was created in 2009 to be:

A decentralized alternative to traditional money

Its main goals: • Be digital cash • Work without banks • Be secure and limited in supply Bitcoin is focused on one job only: 💰 Sending and storing value.... It’s like digital gold: • Hard to change •Reliable •Not very flexible •Designed to be simple and secure Bitcoin’s blockchain is intentionally limited in what it can do. 🔵 ETHEREUM — A Programmable Blockchain Ethereum came later (2015) with a bigger vision:

What if blockchain could run programs, not just money?

Ethereum allows developers to write smart contracts programs that run on the blockchain. That means Ethereum can power: •DeFi apps (borrowing, lending, trading) •NFTs •Games •DAOs •Voting systems •Marketplaces So Ethereum isn’t just money… It’s more like a global computer that anyone can use. 🧠 The Core Difference BITCOIN Focus: Money Digital gold Simple & secure Flexible & powerful Limited features Ethereum Focus:Applications Programmable blockchain Smart contracts + DApps Bitcoin asks:

How can we build decentralized money?

Ethereum asks:

How can we build decentralized everything?

⚙️ Tech Difference (Beginner Level) Bitcoin’s scripting system is very basic on purpose. This keeps it secure but limits what developers can build. Ethereum uses a system called the Ethereum Virtual Machine (EVM), which lets code run on the blockchain. That’s why we can build apps on Ethereum but not really on Bitcoin. ⛽ Gas Fees (Ethereum Thing) Ethereum transactions cost gas fees because: You’re not just sending money You’re paying for computation (code execution) The more complex the action, the more gas it needs. Bitcoin mostly just processes payments, so its fee system is simpler. 💡 Big Realization Today Bitcoin = store value Ethereum = build systems Bitcoin is like a calculator. Ethereum is like a smartphone. Both are powerful just for different reasons. 🔗 Resources I Used Today 🎥 YouTube • Eyes on tech — Bitcoin vs Ethereum • Finematics — What is Ethereum? 📖 Websites • ethereum.org -> “What is Ethereum?” • bitcoin.org -> Bitcoin basics

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Some of the video files might be taken out This is by https://x.com/OneJKMolina Enjoy 🫡 and Good luck 🤞

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Day 3 Summary — Who Runs the Blockchain Today I learned that blockchains are run by nodes, miners, and validators ... not a company. Nodes are computers around the world that store a copy of the blockchain and check that transactions follow the rules. They help keep the system decentralized and secure. To add new blocks, networks use different systems: • Miners (Proof of Work) :solve complex math problems to add blocks and earn rewards. This is how Bitcoin works, but it uses a lot of energy. • Validators (Proof of Stake): lock up their own crypto and are chosen to confirm blocks. They earn rewards for being honest and lose money if they cheat. This is what Ethereum uses now Blockchain stays secure and decentralized because thousands of computers verify transactions, and special participants (miners or validators) add new blocks using systems designed to prevent cheating.

✅ DAY 3/30

Who Runs the Blockchain?

(Nodes, Miners & Validators) So far I learned what blockchain is and how blocks connect. But today’s big question was: If there’s no company in charge… who actually runs the system? Turns out .. regular people and computers around the world. 🌍 Meet the NODES A node is just a computer connected to the blockchain network. But not just watching , It stores a full copy of the blockchain and helps verify information. Thousands of these nodes exist worldwide. That means: • No single server controls everything • No one can secretly change the records • If one node goes offline, the network keeps running • This is what makes blockchain decentralized. Think of nodes as: 🧠 The memory of the blockchain 👀 The watchers checking everything is correct ✅ What Do Nodes Actually Do? Nodes: •Store the entire blockchain history •Check if transactions follow the rules •Share information with other nodes •Reject fake or invalid transactions So when someone sends crypto, nodes help decide: “Is this legit or not?” ⛏️ Then Who Adds New Blocks? This is where miners and validators come in. Different blockchains use different systems to choose who adds the next block. 🧱 System 1: MINERS (Proof of Work – used by Bitcoin) Miners are special nodes that: Compete to solve a very hard math puzzle ,The first one to solve it earns the right to add the next block, They get rewarded with crypto, This system is called Proof of Work (PoW). Why make it hard? Because it prevents cheating, To fake the blockchain, you’d need more computing power than the rest of the world combined. Basically impossible. Downside: ⚡ Uses a LOT of electricity. 🌱 System 2: VALIDATORS (Proof of Stake – used by Ethereum now) Ethereum switched to a different system called Proof of Stake (PoS). Instead of solving puzzles, validators: Lock up (stake) their own crypto as a deposit, Are randomly chosen to confirm new blocks, Get rewards for being honest, Lose money if they try to cheat... So instead of “work hard with computers,” it’s “risk your own money to prove you’re honest.” Much more energy efficient. 🧠 Why This Matters Because this is how blockchain stays: 🔐 Secure ⚖️ Fair 🌍 Decentralized No boss. No company. No central server. Just: Nodes verifying Miners or validators adding blocks Math enforcing the rules 🔗 Resources I Used Today 🎥 YouTube • simple explained — Proof of Work vs Proof of Stake • Finematics — Blockchain Nodes Explained 📖 Websites • ethereum.org -> Proof of Stake section • bitcoin.org -> How mining works 🚀 Day 3 Complete Now I understand: ✅ What nodes are ✅ How transactions are verified ✅ The difference between miners and validators ✅ Proof of Work vs Proof of Stake (basics) This system is lowkey genius fr.