In about a decade of its existence, blockchain technology has seen some level of innovation diffusion to many sectors other than its genesis application of cryptocurrencies (see Figure
4-1). This chapter presents an objective view of the developments of blockchain and distributed ledger technologies beyond the cryptocurrencies. By drawing from the current states of the tech, I will present a detailed analysis of existing and potential use cases including ecommerce, Vickrey auction, self-sovereign digital identity management, ...