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Crypto

Layer 2 (L2)

Secondary blockchain networks built on top of base layers (L1) to improve speed and reduce costs.

In depth

Examples on Ethereum: Arbitrum, Optimism, Base, zkSync. Bundle many transactions and post compressed proof to L1. Fees often 10-100x lower than L1. Trade-offs include slower withdrawals back to L1 (especially optimistic rollups).

Frequently asked about Layer 2 (L2)

What is Layer 2 (L2)?

Secondary blockchain networks built on top of base layers (L1) to improve speed and reduce costs. Examples on Ethereum: Arbitrum, Optimism, Base, zkSync. Bundle many transactions and post compressed proof to L1. Fees often 10-100x lower than L1. Trade-offs include slower withdrawals back to L1 (especially optimistic rollups).

Why does Layer 2 (L2) matter for investors?

In crypto, Layer 2 (L2) is one of the building blocks investors use to compare opportunities and assess risk. Understanding it helps you read research notes, earnings reports, and market commentary without getting lost in jargon.

How is Layer 2 (L2) used in practice?

Examples on Ethereum: Arbitrum, Optimism, Base, zkSync. Bundle many transactions and post compressed proof to L1.

Recent news mentioning Layer 2 (L2)

Kezie Apps, 35, set to be oldest Origin player across men's & women's series

The Quick Take * Kezie Apps, aged 35, will be the oldest State of Origin player across both states and genders in 2026 * No market reaction applicable — this is a sports human-interest story with no financial data reported * No analyst or institutional financial response cited in available coverage * Apps shows no signs of retirement, suggesting continued participation beyond the 2026 series * No direct cross-market or global financial angle identified in this story Synthesized from 1 sou

May 14, 2026

Related terms

Gas Fee

Transaction fee paid to validators for processing on-chain operations.

Rollup

A Layer-2 scaling technique that bundles transactions and posts compressed data to L1.

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