We enter dozens of trust relationships ever time we interact with the Web. Browsers, ISPs, DNS providers, cloud hosting companies, all the way down to the handful of people who control certificate root keys; we rely on the integrity of these intermediaries to serve reliable, and accurate information. The concentration of power by any one of these actors threatens to compromise the very foundational principles of the Web. Decentralized technologies, like Bitcoin, Ethereum, Tor, and IPFS seek to reverse this trend. We’re joined by Nick Sullivan, Chief Cryptographer at Cloudflare. Founded less than 10 years ago, the company offers content delivery services (CND), DNS, and DDoS protection to over 12 million websites. The company contributes to open source cryptography libraries, some of which are used by Etherum. They recently launched an IPFS gateway and features which allow users to have strong guarantees as to the integrity of the content. Topics covered in this episode: Nick’s background as a cryptographer and previous position at Apple The Internet’s infrastructure and trust model How Cloudflare is experimenting with IPFS The challenges to hosting static websites with IPFS Cloudflare’s Onion routing service (Tor) and the benefits to users The Roughtime protocol and encrypted SNI Cloudflare’s contribution to open-source cryptography libraries The vulnerabilities of DNS and Cloudflare’s free private DNS service (1.1.1.1) Episode links: Welcome to Crypto Week (article) Roughtime: Securing Time with Digital Signatures (article) Introducing CFSSL - CloudFlare's PKI toolkit (article) End-to-End Integrity with IPFS (article) Introducing the Cloudflare Onion Service (article) Cloudflare's Distributed Web Gateway Nick Sullivan's website Thank you to our sponsors for their support: Deploy enterprise-ready consortium blockchain networks that scale in just a few clicks. More at aka.ms/epicenter. This episode is hosted by Sébastien Couture and Sunny Aggarwal. Show notes and listening options: epicenter.tv/264

Most observers of the ecosystem will probably agree that 2015-2017 were the years of the enterprise blockchain. It was during that time that many startups catering to enterprise were founded and funded, including Monax and Stratumn (where Brian and Sebastien previously worked). For the permissioned blockchain camp, adoption would come in the form of enterprise use cases, arguing that public networks carried too much risk, and lacked needed features like privacy. While much of the hype has subsided, large companies in every sector are forming consortia and leveraging blockchain to provide better process traceability and transparency, and reduce their reliance on third parties. We’re joined by Brian Behlendorf, Executive Director of Hyperledger. When Brian was last on the show, he had recently started his role at the Linux Foundation. Now, two years later, Hyperledger has gone from a nascent project to a mature ecosystem of technologies with hundreds of members. With dozens of networks in production, and backed by companies like IBM, Hyperleger is the most widely used blockchain technology for permissioned networks. Topics covered in this episode: The most important developments in Hyperledger in the last two years Hyperledger’s family of technologies Production networks on Hyperledger How Hyperledger Fabric differs from Tendermint and Ethereum The evolution of the enterprise blockchain ecosystem The separation between the permissioned and public blockchain ecosystems Industry use cases for Hyperledger Fabric Brian’s skepticism about ICOs and tokens The growing Hyperledger community and upcoming Global Forum in Basel this December Episode links: Hyperledger website Hyperledger Global Forum http://sdxcentral.com Unbounded - To Network with Networks Pittsburgh, Cincinnati, Chicago and St. Louis Railroad - Wikipedia Thank you to our sponsors for their support: Simplify your hiring process & access the best blockchain talent . Get a $1,000 credit on your first hire at toptal.com/epicenter. This episode is hosted by Brian Fabian Crain and Sébastien Couture. Show notes and listening options: epicenter.tv/262