<aside> 📜 TABLE OF CONTENTS

1. 📘 Introduction to XRP Ledger

2. 🔑 XRP Ledger Basics

3. 💻 Interacting with XRP Ledger

4. 🏗️ Building dApps on XRPL with React

5. 🔗 EVM Sidechain Integration for XRPL

6. 🛠️ Non-EVM Development

7. 📚 Resources and References

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http://quiz.xrplsea.org

XRP Ledger Introduction 📘

Introduction and Consensus Mechanism 🔗

The XRP Ledger (XRPL) emerged in the early 2010s as a solution for fast, cost-effective global transactions.

🚀 Key Features

• Launched in 2012
• Fully decentralized by 2018
• Settles transactions in 3-5 seconds
• Handles 1,500 transactions per second
• Uses minimal energy

Consensus Protocol:

• 🔹 Validator-based system
• 🔹 Requires 80% agreement to close a ledger
• 🔹 Unique Node List (UNL) for flexible trust

This approach offers rapid transaction finality while maintaining security and decentralization.

Architecture and Comparison 🏗️

The XRPL architecture separates:

1. State data (current account information)
2. Transaction data (historical records)

It operates across three layers:

• 📡 Peer Protocol for communication
• 🤝 Consensus Protocol for agreement
• 📊 Ledger Protocol for transaction processing

💡 Comparison with other blockchains

• vs Bitcoin: Faster settlement, lower fees
• vs Ethereum: Faster and cheaper transactions, limited smart contracts
• vs Stellar: Similar focus, higher throughput, more established ecosystem

Interoperability and Scalability 🌉

Interoperability solutions:

• 🔗 Cross-chain bridges
• 🖥️ EVM Sidechain (testnet expected to go live on 2025)
  • Enables Ethereum-compatible smart contracts
  • Bridges XRP with ERC-20 tokens

Scalability features:

• 📈 On-ledger: Payment Channels
• 📊 Off-ledger: EVM Sidechain

Potential throughput: Tens of thousands of transactions per second

Governance and Ecosystem 🏛️

Governance model:

• Amendments require 80% validator support for two weeks
• Balances innovation and stability

📅 Historical Amendments

• 2016: Multi-signature support
• 2020: Enhanced account security

Rich ecosystem:

• 🛠️ Development tools: xrpl.js, rippled
• 🔍 Explorers: XRP Scan, Bithomp
• 👛 Wallets: XUMM, hardware options
• 🌐 Community resources: XRPL.org, forums

This diverse ecosystem supports current usage and future innovation in the XRPL.