An L2 Security Model describes the framework of cryptographic assurances and economic incentives that protect a layer-2 scaling solution. This model specifies how the layer-2 system relies on the underlying layer-1 blockchain for data availability and dispute resolution. It outlines the mechanisms ensuring that layer-2 transactions are ultimately as secure as those on the main chain. Understanding this model is crucial for assessing the trust assumptions of any given layer-2 protocol.
Context
The L2 Security Model is a central discussion in news covering the development and adoption of various blockchain scaling technologies. Debates often concern the varying degrees of security inheritance and the potential trade-offs involved. Continued innovation focuses on strengthening these models to provide robust, scalable, and verifiable transaction processing.
The Based Rollups paradigm leverages the Layer One's block production to sequence Layer Two transactions, fundamentally eliminating centralized sequencer risk and achieving native censorship resistance.
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