4 papers · 1 filter
SEDULity: A Proof-of-Learning Framework for Distributed and Secure Blockchains with Efficient Useful Work
Weihang Cao, Mustafa Doger, Sennur Ulukus
The security and decentralization of Proof-of-Work (PoW) have been well-tested in existing blockchain systems. However, its tremendous energy waste has raised concerns about sustai…
Incentive Attacks in BTC: Short-Term Revenue Changes and Long-Term Efficiencies
Mustafa Doger, Sennur Ulukus
Bitcoin's (BTC) Difficulty Adjustment Algorithm (DAA) has been a source of vulnerability for incentive attacks such as selfish mining, block withholding and coin hopping strategies…
An Incentive-Compatible Semi-Parallel Proof-of-Work Protocol
Mustafa Doger, Sennur Ulukus
Parallel Proof-of-Work (PoW) protocols have been suggested in the literature to improve the safety guarantees, transaction throughput and confirmation latencies of Nakamoto consens…
When Should Selfish Miners Double-Spend?
Mustafa Doger, Sennur Ulukus
Conventional double-spending attack models ignore the revenue losses stemming from the orphan blocks. On the other hand, selfish mining literature usually ignores the chance of the…