Introduction At the present time, Eudico doesn't use a BFT-type consensus. This document provides a design of applying Tendermint Core in Filecoin and the description of its experimental implementation in Eudico client. Tendermint Core is used in the service-based model, rather than in the traditional ABCI-based model. The main goal of the document is to provide a full understanding of the proposed design, Tendermint Core interactions, and how the entire system works. Goals