15 citations · 17 across the 3 of their papers we have counts for
7 papers
Pricing Security in Proof-of-Work Systems
George Bissias, Rainer Böhme, David Thibodeau +1
A key component of security in decentralized blockchains is proof of opportunity cost among block producers. In the case of proof-of-work (PoW), currently used by the most prominen…
Radium: Improving Dynamic PoW Targeting
George Bissias
Most PoW blockchain protocols operate with a simple mechanism whereby a threshold is set for each block and miners generate block hashes until one of those values falls below the t…
Greedy but Cautious: Conditions for Miner Convergence to Resource Allocation Equilibrium
George Bissias, Brian N. Levine, David Thibodeau
All public blockchains are secured by a proof of opportunity cost among block producers. For example, the security offered by proof-of-work (PoW) systems, like Bitcoin, is due to s…
Bonded Mining: Difficulty Adjustment by Miner Commitment
George Bissias, David Thibodeau, Brian N. Levine
Proof-of-work blockchains must implement a difficulty adjustment algorithm (DAA) in order to maintain a consistent inter-arrival time between blocks. Conventional DAAs are essentia…
An Algorithm for Bounding the Probability of r-core Formation in k-uniform Random Hypergraphs
George Bissias
We present an algorithm for bounding the probability of r-core formation in k-uniform hypergraphs. Understanding the probability of core formation is useful in numerous application…
Using Economic Risk to Model Miner Hash Rate Allocation in Cryptocurrencies
George Bissias, Brian N. Levine, David Thibodeau
Abrupt changes in the miner hash rate applied to a proof-of-work (PoW) blockchain can adversely affect user experience and security. Because different PoW blockchains often share h…