We're joined by Tal Moran, Chief Scientist at Spacemesh. This new consensus protocol is designed to run on home desktop PCs, filling free space on users' hard drives to create a Proof of Space-Time. The goal of this new blockchain protocol is to solve the issues with Proof of Work and Proof of Stake, that is, energy inefficiency on the one hand, and possible centralized plutarchy of rich validators on the other. Topics discussed in this episode:Tal's background as an academic and researcherThe problems with Proof of Stake and Proof of WorkWhat is Proof of Space-Time and how it worksHow miners use their hard drive space to establish proofsHow randomness is generated in SpacemeshSpacemesh's DAG architecture and how blocks are added to the chainThe tortoise and hare protocols proposed by SpacemeshThe Spacemesh team and recent funding roundThe project's business model and roadmap Links mentioned in this episode: SpacemeshSpacemesh white paperTal's CESC18 talk in San FransiscoSpacemesh on GitHubSpacemesh on TwitterSpacemesh on MediumInterchain Conversations Berlin event '" use code EPICENTER for discounted ticketsCosmos Hackatom Berlin Sponsors: Vaultoro: Trade gold to Bitcoin instantly and securely starting at just 1mgCosmos: Join the most interoperable ecosystem of connected blockchains Support the show, consider donating: BTC: 1CD83r9EzFinDNWwmRW4ssgCbhsM5bxXwg (https://epicenter.tv/tipbtc)BCC: 1M4dvWxjL5N9WniNtatKtxW7RcGV73TQTd (http://epicenter.tv/tipbch)ETH: 0x8cdb49ca5103Ce06717C4daBBFD4857183f50935 (https://epicenter.tv/tipeth) This episode is hosted by Sebastien Couture & Friederike Ernst. Show notes and listening options: epicenter.tv/291