Optimism - Ethereum L2 Blockchain

Optimism is an Ethereum-based decentralized platform that allows for instant transactions. Optimism strives to make Ethereum transactions cheaper and faster. It is built on four pillars - simplicity, pragmatism, sustainability and optimism.

Simplicity reduces engineering overhead and increases security.  The design process behind Optimism is driven by pragmatism.  The pragmatic design prioritizes user and developer needs.  The design process is also built around the idea of long-term sustainability and not taking shortcuts to scalability.  Optimism believes in an optimistic future for Ethereum.  Optimism is designed so that Ethereum can succeed.

The Optimism ecosystem supports a number of apps and integrations.

Optimism is an "Optimistic Rollup," which is basically just a fancy way of describing a blockchain that piggy-backs off of the security of another "parent" blockchain. Specifically, Optimistic Rollups take advantage of the consensus mechanism (like PoW or PoS) of their parent chain instead of providing their own. In Optimism's case this parent blockchain is Ethereum.

Jinglan Wang, Karl Floersch and Kevin Ho are the founders of Optimism. Optimism has raised $178.5M in funding.