What is Scroll? The chain Scaling Ethereum with Zero Knowledge Proofs
Ethereum's scalability challenges have long been a concern for developers and users alike. Enter Scroll, a promising Layer 2 solution that aims to address these issues using cutting-edge zkEVM technology. In this article, we'll explore what Scroll is, how it works, and why it's generating buzz in the Web3 community.
What is Scroll?
Scroll is a Layer 2 network built on Ethereum that leverages zero-knowledge rollup (zkRollup) technology to enhance scalability without compromising security or decentralization. As a zkEVM (zero-knowledge Ethereum Virtual Machine) solution, Scroll aims to provide a seamless experience for developers and users familiar with the Ethereum ecosystem.
How Scroll Works
At its core, Scroll operates as a Type 3 zkEVM, with plans to evolve into a Type 1 solution. This classification refers to its level of EVM compatibility, with Type 1 being the closest to native Ethereum functionality. Here's how Scroll enhances Ethereum's capabilities:
- Transaction Bundling: Scroll bundles multiple transactions together, reducing the load on the Ethereum mainnet.
- Zero-Knowledge Proofs: It generates cryptographic proofs to verify the validity of transactions without revealing specific details.
- EVM Compatibility: Developers can deploy existing Ethereum smart contracts with minimal to no modifications.
Key Features of Scroll
High Throughput: By processing transactions off-chain and only submitting proofs to Ethereum, Scroll significantly increases the number of transactions per second.
Lower Fees: Users can enjoy reduced gas fees compared to Ethereum mainnet transactions.
Security: Scroll inherits Ethereum's robust security model while adding an extra layer of cryptographic assurance.
Developer-Friendly: With its EVM compatibility, Scroll allows developers to use familiar tools and languages like Solidity.
Scroll vs. Other zkEVMs
While Scroll is making waves, it's not the only player in the zkEVM space. Other notable projects include Polygon zkEVM, zkSync Era, Linea, and Taiko. Each offers unique advantages:
| zkEVM Solution | Current Type | Mainnet Status | Key Focus |
|---|---|---|---|
| Scroll | Type 3 | Testnet | EVM Compatibility |
| Polygon zkEVM | Type 3 | Live | Ecosystem Strength |
| zkSync Era | Type 4 | Live | Custom Language Support |
| Linea | Type 3 | Live | ConsenSys Backing |
| Taiko | Type 1 | Testnet | Decentralization |
Scroll represents a significant step forward in Ethereum scaling solutions. Its focus on EVM compatibility, coupled with the efficiency of zkRollup technology, positions it as a strong contender in the Layer 2 space. As the project evolves, it has the potential to play a crucial role in addressing Ethereum's scalability challenges and fostering the growth of decentralized applications.
thirdweb's full-stack web3 development kit makes it easy to build on Scroll:
✦ Frontend: Client-side SDKs to connect users to web3
✦ Backend: Scalable contract APIs backed by secure wallets
✦ Onchain: Pre-built & extendable contracts
✦ Gaming SDKs: Unity, Unreal Engine, and Mobile (React Native)