First-Generation Protocols

Architecture

First-generation protocols in cryptocurrency represent the foundational designs upon which decentralized systems were initially constructed, often characterized by a direct mapping of traditional database concepts to a distributed ledger. These early systems, such as Bitcoin, prioritized immutability and censorship resistance through mechanisms like proof-of-work, establishing a baseline for subsequent innovation. The architectural choices within these protocols directly influenced transaction throughput and scalability, revealing inherent limitations that spurred the development of layer-2 solutions and alternative consensus mechanisms. Understanding this initial architecture is crucial for evaluating the trade-offs inherent in current blockchain designs and assessing the evolution of the broader ecosystem.