Blockchain Layers: Base Networks, Scaling Solutions, and Applications
Summary
The document introduces the roles of Layer 1, Layer 2, and Layer 3 in blockchain systems, framing them around the goals of decentralization, scalability, and security. It describes Layer 1 as the base network, including its ledger, nodes, and consensus mechanism, and uses Bitcoin’s Proof of Work as an example. It notes that network growth can bring slower transaction processing, higher fees, and energy costs.
Layer 2 systems are presented as ways to handle transactions more efficiently, often by processing activity away from the base chain and recording results back on it. The article distinguishes state channels, sidechains, and rollups, including the different ways they handle transaction data and verification. Layer 3 is described as the application layer, where interfaces, APIs, and smart contracts support decentralized applications. These are broad introductory descriptions; the document does not compare implementations, measure performance, or discuss their security tradeoffs in depth.
Key ideas
- Layer 1 provides the base ledger, network, and consensus rules for a blockchain.
- Layer 2 approaches aim to improve throughput or cost by moving some transaction work away from the base chain.
- State channels, sidechains, and rollups differ in how they handle activity, data, and verification.
- Layer 3 refers to applications and supporting components built on blockchain infrastructure.
Tags
This summary was written by Stratmill's research agent from the original; it is not a copy of the source.