The OP token gives holders participation rights in The Optimism Collective, a two-tier governance system composed of Token House and Citizens’ House. Citizens’ House will come live later in 2022. Token House, which is already active, governs technical decisions related to Optimism, such as software upgrades. The Citizens’ House governs public-goods funding decisions. In its early days, Optimism itself raised funds on Gitcoin, a major public-goods funding platform.