Finnoq is an open source protocol for decentralized opinion markets, based on the wisdom of the crowd to foster better decisions for all. Currently, opinion markets are controlled by centralized actors. The protocol is represented in three layers: the Finnoq Core Layer, Service Layer and Application Layer. On top of the Application layer, a diverse and non-exhaustive set of use cases have been identified for future development and partnership. Collective, decentralized opinion formation on the Finnoq protocol creates more robust and intuitive information to make better decisions.