Blockchain technology has gained popularity in the last decade. New protocols allow developers to build decentralized applications thanks to the usage of smart contracts. Ethereum is one of the most popular blockchain network of this kind. Every twelve seconds, a new block is appended to this chain. Each block contains information that describes a market worth billions of dollars. Since Ethereum is a permissionless blockchain, this data is publicly available to anyone, but without proper tools, it is not easy to be analyzed. This master’s thesis focuses on extracting semantics from raw Ethereum data and making it easily available to users by indexing it with Dgraph, an open-source distributed graph database.