Opinions in the finance industry are mainly steered by central organizations and therefore have the power to influence entire markets. For this reason, Finnoq is developing an Open Source Protocol for collective opinion formation in the finance industry, drawing upon the wisdom of the crowd. The “Finnoq Core” is the basis layer of this Open Source Protocol and is used for community-based reconciliation. Consequently, applications for collective ratings regarding different financial products can be developed. On top of the basis layer (Finnoq Core) there is the “Service Layer”, it enables developers to integrate additionally needed modules (e.g. rating algorithms), which can be used by applications within a modularly-constructed system. Finnoq thus provides a protocol for forgery-proof opinions and sound advice from a global community. Due to the possibility of collective and decentralised opinion formation, it will no longer be necessary to rely on the perspective of a single organisation or individual.