On The Brink with Castle Island

James Lovejoy, recent MEng MIT grad and former graduate researcher at the MIT Digital Currency Initiative, joins the show to talk about his masters thesis and associated project focusing on detecting double-spends in proof of work cryptocurrencies. Previously, little data was collected in a systematic way to detect double-spends and reorganizations across many cryptocurrencies. James' project sheds light on previously unknown security properties of PoW. In this episode:  How James came to work on Vertcoin Why James thinks ASIC resistance is valuable James' blockchain monitoring project and why it matters Why reorgs are challenging to detect Why investigating the economic damage of reorgs is difficult How James noticed a 51% attack in progress on Vertcoin and intervened to save Bittrex money – and how this can be replicated Why understanding Nicehash is critical to detecting and dealing with 51% attacks James' critiques of dominant theoretical models of PoW security How James found reorgs and counterattacks h