Titlebook: Data Privacy Management, Cryptocurrencies and Blockchain Technology; ESORICS 2018 Interna Joaquin Garcia-Alfaro,Jordi Herrera-Joancomartí,R

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Medical and psychosocial interventions,nt channels from the perspective of a Payment Service Provider (PSP). Given a set of transactions, we examine the optimal graph structure and fee assignment to maximize the PSP’s profit. A customer prefers to route transactions through the PSP’s network if the cheapest path from sender to receiver i

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Louis G. Tornatzky,Esther O. Fergusosals for decision schemes. In this work we rigorously analyze 30 existing schemes. Our analysis demonstrates contradictions between these schemes – so clearly they cannot all be right – and also highlights what we feel is a more structural flaw of most of them, namely that they ignore alternatives

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Abraham M. Jeger,Robert S. Slotnicky of a cryptocurrency, but come at a considerable energy cost. One approach to the problem of energy wastage is to find ways to build PoW schemes from valuable computational problems. This work proposes calibration of public key cryptographic systems as a suitable source of PoW puzzles. We describe

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https://doi.org/10.1007/978-1-4899-3344-7 names, this attack can fool the mining pool administrator into punishing any innocent miner; when the top miners are punished, this attack can significantly slow down the overall production of the mining pool. We show that an attacker needs only a small fraction (e.g., one millionth) of the resourc

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Gerald Midgley,Alejandro E. Ochoa-Arias PoW blockchains often share hashing algorithms, miners face a complex choice in deciding how to allocate their hash power among chains. We present an economic model that leverages Modern Portfolio Theory to predict a miner’s allocation over time using price data and inferred risk tolerance. The mod

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Alan Boyd,Mandy Brown,Gerald Midgleywn that the privacy of the protocol may conflict with its concurrent nature and may lead to deadlocks. In this paper we ask the natural question: can payments in routing networks be routed so as to avoid deadlocks altogether? Our results show that it is in general NP-complete to determine whether a