Blockchains @ HUJI

Or, How Cryptocurrency Miners Can Manipulate the Blockrate and Profit

How to automatically extend deadlines on the blockchain

SoK paper that discusses networking aspects of Cryptocurrencies: State-of-the-art & Open questions across the subdomain

The tradeoff triangle: Confidentiality-Efficiency-Effectiveness of the route discovery process in off-chain networks.

In our latest paper, we show that Proof of Work (PoW) systems can never be used to solve meaningful problems in trustless systems. As the…

We evaluate a systemic attack on the Lightning Network that allows stealing funds from payment channels

We show that ASICs used for mining should be treated as a bundle of options, and their profits can be imitated without actually owning any.

In our new paper, we uncovered a new denial-of-service (DoS) attack that could sabotage payments on the Lightning Network. This method…

By Ayelet Mizrahi and Aviv Zohar

How the Cryptocurrency Community Interacts on Twitter

By Tamar Berenblum and Aviv Zohar. A tale of our sudden unexpected Bitcoin wealth and the ensuing beaurocratic mess we had to resolve in…

How Mechanism Design and Auction Theory Can Improve Bitcoin’s Transaction Fees