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🌐 Arbitrum Overview

Arbitrum is a Layer 2 scaling solution for Ethereum designed to improve transaction speed and reduce costs while maintaining security. It leverages rollup technology to process transactions off-chain and only posts essential data to the Ethereum mainnet

🚀 Arbitrum Nitro

Arbitrum Nitro is an upgraded version of Arbitrum that significantly improves transaction throughput 🚀, reduces costs 💸, and enhances compatibility with Ethereum 🛠️ by using optimized WASM-based fraud proofs 🧩 and a new architecture built on the Geth (Go-Ethereum) codebase 💻.

⚖️ Arbitrum Nitro vs. Arbitrum Classic​

  • 🚀 Arbitrum Nitro:

    • ⚙️ Uses a Wasm-based stack with full EVM compatibility.
    • 💸 Optimized for lower costs, reduced latency, and higher throughput.
    • 🛡️ Features a streamlined dispute resolution with a single-round interactive fraud proof system.
    • 🌟 Now the standard for modern dApps.

  • 🛠️ Arbitrum Classic:

    • 🔧 Built on a custom virtual machine with higher overhead.
    • 🐢 Lower throughput compared to Nitro.
    • 🌀 Utilizes a more complex, multi-round dispute resolution process.
    • 🏛️ Serves as a legacy system.

🖧 Node Types in Arbitrum Nitro​

🔷 Sequencer Node

Role: Orders and batches transactions.
Function: Collects, executes off-chain transactions, and posts transaction batches to Ethereum.

✅ Validator Node

Role: Monitors and verifies Sequencer outputs.
Function: Ensures accuracy of transactions and state transitions; can challenge discrepancies.

⚙️ Rollup Node

Role: General-purpose node for interacting with the rollup chain.
Function: Manages state, handles data availability, and supports communication with Sequencers and Validators.

In Arbitrum Nitro, the primary nodes are the Sequencer, Validator, and Rollup nodes. However, depending on how you define node roles, there are a few additional concepts or specialized nodes you might encounter:

🌍 Full Node

  • Role: Participates in the Arbitrum network by fully verifying transactions and state transitions.
  • Function: Stores the entire state of the rollup chain, similar to Ethereum's full nodes, ensuring network integrity.

🪄 Lite Node (or Light Client)

  • Role: Interacts with the Arbitrum chain with minimal resource requirements.
  • Function: Verifies only the block headers and uses proofs to confirm the validity of state changes without downloading the entire blockchain.

🛠️ The Arbitrum suit

The Arbitrum suite includes a variety of other tools and products 🛠️.

🏗️ Arbitrum Orbit

Overview: Arbitrum Orbit is a customizable Layer 3 (L3) solution,
allows developers to deploy their own rollup chains on top of Arbitrum,
benefiting from the security and scalability of Arbitrum's L2.

Function: Enables projects to create their own rollups with unique features, consensus mechanisms, or governance models, 
while inheriting the security of the underlying Arbitrum chain.

🔒 Arbitrum One

Overview: Arbitrum One is the mainnet rollup chain that scales Ethereum by processing transactions off-chain,
while ensuring security through Ethereum's consensus.

Function: Provides a high-throughput environment for decentralized applications (dApps) with lower transaction costs compared to Ethereum L1.

🧩 Arbitrum Nova

Overview: Arbitrum Nova is optimized for gaming and social dApps that require high throughput and low latency.

Function: Focuses on ultra-fast transactions and is ideal for applications that need frequent microtransactions,
such as in-game purchases or social interactions.

📚 Arbitrum SDK

Simply put It's a Type Script library

Overview: A set of tools and libraries designed to help developers easily integrate with the Arbitrum ecosystem.

Function: Provides APIs, documentation, and development tools for building and deploying dApps on Arbitrum's rollup chains.

➡️ Find more about the Arbitrum SDK

➡️ Find more about the The arbitrum suit