Scroll (SCR) — how does the Ethereum-compatible next-generation rollup work?

Question

If you are a cryptocurrency wallet owner or actively use decentralized applications, you know that Ethereum sometimes operates like a congested airport — transactions are slow, fees skyrocket. Many solutions are emerging for this problem, and one of the most promising is Scroll (SCR).

Why does Ethereum need scalability improvements?

The Ethereum mainnet processes all transactions centrally, creating a bottleneck. When demand rises, delays begin. Gas fees become unaffordable for regular users, and DApp developers lose interest in deploying their projects on the network.

Engineers struggled for a long time — how to increase throughput without losing security and decentralization? The answer came with the technology of 2-layer solutions (Layer 2).

What is Scroll: general understanding

Scroll is a layer two scaling solution specifically built for Ethereum. In simple terms: it is a parallel system that processes transactions off the main network and then sends the final data back for confirmation.

The key feature of Scroll is the use of ZK-rollups (zero-knowledge rollups). This cryptographic technology allows for proving the correctness of multiple transactions with a single mathematical proof, without the need to recheck each operation on the main blockchain.

The result? Transactions are processed faster, fees are dropping, and the network remains fully secure.

How is Scroll architecturally structured?

The system operates on three levels:

Settlement Layer ( — this is Ethereum itself. It serves as the final instance, storing data and verifying ZK-proofs. Ethereum acts here as a guarantor of security.

Sequencing Layer ) — here Scroll collects transactions into batches, orders them, and sends the information to the main network for permanent storage. It's like the work of a cashier who issues a cash register tape at the end of the shift.

Proving Layer (Proving Layer) — this is where cryptographic magic happens. Numerous independent computers (Provers) generate zero-knowledge proofs. These proofs confirm that all transactions have been processed correctly and are ready for approval.

zkEVM: why it is fundamentally important

zkEVM ( is a virtual machine Ethereum with ZK support ) — a stellar component of Scroll. This allows for the execution of Ethereum smart contracts within a ZK-rollup without rewriting the code.

Developers get the perfect scenario: they can migrate their DApps to Scroll with minimal changes, as the entire infrastructure is fully compatible. There is no need to learn a new programming language or redesign the architecture from scratch.

Stages of Transaction Processing in Scroll

Each transaction goes through three phases:

Confirmation — the user sends the operation, and it is immediately included in the Scroll block. This takes a few seconds.
Batching — Scroll groups thousands of confirmed transactions into one package and records it on Ethereum to guarantee data availability.
Finalization — the system generates a proof of validity and sends it to the main network. When Ethereum verifies it, the transaction becomes final and immutable.

The entire process—from entering Scroll to final closure on Ethereum—takes minutes, not hours.

Specific benefits of using Scroll

Speed without compromise. The throughput increases by over 100 times compared to Ethereum Layer 1. Making payments and interacting with DApps becomes pleasantly fast.

Real cost reduction. Fees drop from tens of dollars to cents. This opens up DeFi and NFT to millions of regular users, not just whales.

Security at the level of Ethereum. ZK-rollups do not require trust in central validators — mathematics guarantees correctness. This is radically different from earlier solutions.

Zero learning curve for developers. With 100% compatibility with Ethereum, migrating a DApp takes days, not months. Existing tools, libraries, and standards just work.

Token SCR and its role in the ecosystem

SCR is the main token that keeps the Scroll ecosystem moving.

Network Management — SCR holders participate in votes on key protocol decisions: updates, changes to security parameters, infrastructure development.

Validation Reward — Provers ( proof creators ) and Sequencers ( batch organizers ) receive rewards in SCR for their work. This incentivizes the decentralization of the network.

Staking and Security — users can lock SCR in smart contracts and earn profits. This mechanism makes attempts to attack the network economically unfeasible.

Practical application of Scroll today

Dozens of DeFi protocols, NFT marketplaces, and games are already operating on Scroll. Stablecoins like USDC and USDT have bridges that allow for quick fund transfers. This is not a theory — it is an operating system with real transaction volumes.

Users receive winnings: fast swaps in DEX, low fees in lending protocols, accessible games and social applications. For developers — just a new audience and an economy that works.

Final Assessment

Scroll (SCR) addresses a real problem of Ethereum in a non-obvious way — by not creating a new isolated blockchain, but rather by integrating into the ecosystem itself through ZK-rollups. This allows for scalability without sacrificing security and decentralization.

As Ethereum and decentralized applications grow, second-layer solutions like Scroll become critically important. They remove the main barrier to mass adoption — high fees and delays.

If you are using Ethereum or are interested in DeFi, it is worth monitoring the development of Scroll and testing applications in its network. This is not just another token — it is an infrastructure project that could potentially redefine the usability of blockchain.