Optimism is a network of chains called the Superchain, built on the open-source OP Stack. OP Mainnet was the first chain, with several others now operating on the OP Stack architecture, including Base (by Coinbase), Unichain (by Uniswap), Ink (by Kraken), and World Chain (by Worldcoin). The OP Stack serves as a framework for Ethereum Layer 2 chains and supports significant L2 activity. Every OP Chain in the Superchain contributes back to the Optimism Collective and all chains follow a standardized revenue-sharing model: the greater of 2.5% of total chain revenue or 15% of onchain profit (defined as fees minus L1 gas costs) is paid back to the Optimism. By aligning economic incentives across many chains, Optimism aims to transform Ethereum scaling into a sustainable flywheel by delivering fast, low-cost transactions while reinvesting in the future of the ecosystem. OP holders participate in governance to shape protocol upgrades, funding decisions, and more

Wrapped Bitcoin (WBTC) is an Ethereum token that is intended to represent Bitcoin (BTC) on the Ethereum blockchain. It is not Bitcoin, but rather a separate ERC-20 token that’s designed to track Bitcoin’s value. WBTC was created to allow Bitcoin holders to participate in decentralized finance (“DeFi”) apps that are popular on Ethereum. Through a WBTC partner, 1 Bitcoin can be exchanged for 1 Wrapped Bitcoin, and vice-versa. The BTC that backs WBTC is verifiable through a “proof of reserve” system that verifies the 1:1 backing between minted WBTC tokens and Bitcoin stored by custodians. WBTC is maintained by a group called the WBTC DAO that consists of over 30 members. It was originally started by BitGo, Ren, and Kyber.