Opinion: L2 is secured by Ethereum, which is no longer worthy of its name

Author: Ishita

Compiled by: Deep Tide TechFlow

Ethereum's evolution over the past decade revolves around a simple promise: to scale the network without sacrificing decentralization. And according to its roadmap, the answer is a future with rollups at its core. In this architecture, Layer 2 networks (L2s or "Rollups") execute transactions off-chain, achieving lower costs and higher throughput while still getting core security from Ethereum as the base layer (Layer 1).

Almost all major rollup projects, including Arbitrum, Optimism, Base, zkSync, and Scroll, have "security guaranteed by Ethereum" as their core brand. This slogan is powerful and central to its marketing narrative, but is it really realistic? This claim becomes vague after delving into how these rollups actually operate and the movement of assets within them.

This article will dissect the gap between slogans and reality, starting with...

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