Optimism

Optimism (OP) is a major Ethereum Layer-2 scaling solution that uses optimistic rollup technology and has pioneered the Superchain vision -- a network of interoperable OP Stack chains sharing security and communication standards. The OP Stack has been adopted by Coinbase (Base), Sony (Soneium), and other major organizations to launch their own Layer-2 networks, creating a growing ecosystem of interconnected chains. Optimism's retroactive public goods funding (RetroPGF) model has distributed millions to builders and is considered a leading experiment in sustainable open-source funding. The protocol's revenue comes from L2 transaction fees minus L1 data-posting costs, with Superchain partners contributing to the collective. Investors follow OP for Superchain ecosystem growth, OP Stack adoption by institutions, governance fund allocation, and its differentiated approach to scaling Ethereum through shared infrastructure.