Cryptocurrencies such as Bitcoin are a high-risk asset class where very high returns are offset by large losses. In a nationally representative online survey of 3,864 German citizens, 354 (9.2%) reported owning cryptocurrencies in March 2019. We analyze a subpopulation of 225 cryptocurrency...

Initial coin offerings (ICOs) represent a novel funding mechanism where digital tokens are issued on the blockchain and sold to investors. One major reason for the success of this financing model is the fact that the issued tokens can immediately be traded on secondary markets. This event study...

After creating a new blockchain transaction, the next step usually is to make miners aware of it by having it propagated through the blockchain's peer-to-peer network. We study an unintended alternative to peer-to-peer propagation: Exclusive mining. Exclusive mining is a type of collusion...