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Ethereum layer 2 rollup platform Metis scales Ethereum with 15 transactions per second, reducing gas fees, with a goal to increase transaction speed and
Ethereum's layer 2 rollup platform, Metis, is a scaling solution that handles transactions off the Ethereum layer 1, taking advantage of the robust decentralized security of Ethereum [1]. The main goal of layer 2 is to increase transaction speed and transaction throughput without sacrificing decentralization or security, as the blockchain trilemma states that a simple blockchain architecture can only achieve two out of three [1].
| At a glance | |
|---|---|
| Price | Not available |
| 24h % move | Not available |
| Key level | 15 transactions per second |
| Catalyst | High demand for Ethereum, resulting in high gas prices |
Layer 2 is a collective term to describe a specific set of Ethereum scaling solutions, which are separate blockchains that extend Ethereum and inherit its security guarantees [1]. Layer 2 networks take the transactional burden away from layer 1, allowing it to become less congested and more scalable [1]. Rollups, a type of layer 2 scaling solution, bundle hundreds of transactions into a single transaction on layer 1, making it cheaper for each user [1].
There are two major categories of rollups: Optimistic rollups and zk-Rollups [2]. Optimistic rollups assume that every transaction in the batch is valid and employ a grace period where a proof of fraud can be used to dispute a batch containing an invalid transaction [2]. Arbitrum and Optimism are two major competing Optimistic rollup projects, both supported by Coinbase Wallet [2].
| Rollup Type | Description |
|---|---|
| Optimistic Rollups | Assume all transactions are valid, with a grace period for dispute |
| zk-Rollups | Use zero-knowledge proofs to authenticate transaction validity |
The success of layer 2 solutions like Metis will depend on their ability to balance scalability, decentralization, and security, and their adoption by the Ethereum community [1]. As the Ethereum network continues to grow and demand for transactions increases, the need for scaling solutions like layer 2 rollups will become more pressing, and the development of these solutions will be crucial to the future of the Ethereum ecosystem [1].
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Layer 2 Scaling is necessary because blockchains possess fundamental limitations that prevent them from facilitating global-scale transactions without sacrificing decentralization and verifiability. By moving frequent, smaller transactions to a secondary layer, the main blockchain can function as a secure settlement layer.
Examples of Layer 2 Scaling systems include the Lightning Network, Ark, sidechains, statechains, rollups, and client-side validated systems. These architectures are designed to facilitate higher transactional volumes while maintaining varying degrees of independence from the main chain.
Layer 2 Scaling systems attempt to mitigate the need for trusted third parties by developing mechanisms that allow users to unilaterally exit back to the mainchain. While early sidechain designs often required some form of trusted third party, newer schemes focus on permissionless exit capabilities.