February 1, 2023

When the cookie meets the blockchain

Cryptocurrencies are portrayed as a more anonymous and less traceable method of payment than credit cards. So if you shop online and pay with Bitcoin or another cryptocurrency, how much privacy do you have? In a new paper, we show just how little. Websites including shopping sites typically have dozens of third-party trackers per site. […]

How to buy physical goods using Bitcoin with improved security and privacy

Bitcoin has found success as a decentralized digital currency, but it is only one step toward decentralized digital commerce. Indeed, creating decentralized marketplaces and mechanisms is a nascent and active area of research. In a new paper, we present escrow protocols for cryptocurrencies that bring us closer to decentralized commerce. In any online sale of […]