Blockchain is an emerging technology that has enabled many applications, from\ncryptocurrencies to digital asset management and supply chains. Due to this\nsurge of popularity, analyzing the data stored on blockchains poses a new\ncritical challenge in data science.\n To assist data scientists in various analytic tasks on a blockchain, in this\ntutorial, we provide a systematic and comprehensive overview of the fundamental\nelements of blockchain network models. We discuss how we can abstract\nblockchain data as various types of networks and further use such associated\nnetwork abstractions to reap important insights on blockchains' structure,\norganization, and functionality.\n