Epicenter - Learn About Blockchain, Ethereum, Bitcoin And Distributed Technologies

Powering an estimated 5-10% of all Bitcoin transactions, Electrum is one of the leaders of the Bitcoin wallet space. The open-source walled was started in 2011 and played a key role in the development of the light-weight SPV wallets. Developer Thomas Voegtlin joined us for a discussion of Electrum, their recent 2.0 release and the rapidly evolving Bitcoin wallet space in general. Topics covered in this episode: The evolution of Bitcoin wallets and what motivated him to start Electrum Electrum 2.0 and its new features such as Multi-sig and hardware wallet support The security tradeoffs between using an SPV wallet versus a full node client How Bitcoin aliases could do away with Bitcoin addresses Episode links: Electrum Electrum Github Repo On the Privacy Provisions of Bloom Filters in Lightweight Bitcoin Clients BIP 39 BIP 37 Versum MIT paper This episode is hosted by Brian Fabian Crain and Sébastien Couture. Show notes and listening options: epicenter.tv/069

Is Bitcoin secure from attacks that could destroy the currency? To a large part, this is determined by how expensive it is to carry out an attack and by the potential profits the attacker could generate. Ideally, an attack is so expensive to carry out that no profit-driven attacker would engage in it. But in this episode, Brian argues that the cost of attacking Bitcoin will likely decrease in the future and the ability to short Bitcoin and thus benefit from an attack will increase dramatically. Topics covered in this episode: How an attacker would need to go about shorting bitcoin How the kamikaze mining pool could be used to bribe miners to join the attacker Why all profit-driven miners will have an incentive to join the attack, whether or not they believe it will succeed Why the block halving in 2016 could be an exceptionally dangerous time for Bitcoin, since an attack would be cheap to execute and likely to succeed How a gradual decrease of the block reward, instead of the 4-year halving rhythm would redu

What Bitcoin did for money, OpenBazaar is trying to achieve for commerce. Born as a fork of the Dark Market project, OpenBazaar aims to facilitate online trade by removing unneeded middlemen. Built as an open source protocol, users simply install the application on their computer to gain access to marketplaces available on the network. From the app, they may also place items or services for sale by creating “Ricardian contracts”, which get propagated to the network and made accessible to everyone to see. The protocol, which uses Bitcoin as a means of payments, utilises multi-signature transactions. This makes it possible for transacting parties to include third-party arbitrators, who may intervene in the event of a dispute. We talked to Brian Hoffman, the project’s Lead Developer, about this paradigm-shifting project and the potential it has to disrupt person-to-person marketplaces such as eBay. Currently in beta, OpenBazaar is due for a full release in Q1-Q2 of 2015. Topics covered in this episode: History

Levin Keller is known to many in Berlin as the man who warned everyone about the dark scenario where buying Bitcoins in Europe would be subject to VAT. As with the VAT issue, Levin was also concerned with the complexity of filing tax returns. For merchants and companies dealing in Bitcoin, keeping track of gains and losses makes proper accounting a messy ordeal. His startup, Coyno, hopes to solve that by providing standalone, read-only bookkeeping for your existing wallets. Coyno allows you to import the public seed from your HD wallet and keeps track of transactions. The service, currently in beta, reads your wallets’ public addresses and stores bookkeeping information whenever a transaction occurs. By recording the exchange rate at the time of transaction, Coyno can generate reports of taxable events, allowing users to more easily file their taxes. By allowing Coyno to read all your wallets, it’s able to differentiate incoming and outgoing transaction from funds being moved within your organization, a featu

Backbone to the financial system? Powering decentralized technology? The first true world currency? There is probably who hasn’t dreamt of a world ten years from now when Bitcoin would be all those things. The promise of cryptocurrencies are enormous, but will Bitcoin really emerge as the winner? And how can we reconcile this grand vision for Bitcoin with an ecosystem where projects launch new coins and blockchains every day? The one project that rekindles those Bitcoin dreams and paints a potential path to Bitcoin’s ultimate success are sidechains. Developed by Adam Back, Greg Maxwell and several other Bitcoin core developers, sidechains aims to allow the permissionless, rapid innovation of alt chains, but using the established monetary base and network of Bitcoin. It’s a complex project, but with Blockstream founders and sidechains visionaries Adam Back and Greg Maxwell we couldn’t have had better companions on our journey into understanding the coming Bitcoin-Sidechains-Macrocosm. Topics covered in this ep

Adam B. Levine, the “Spiritual Grandfather” of Epicenter Bitcoin and Editor-in-Chief of Let’s Talk Bitcoin, joins us to share is “crazy” passion for information and cryptocurrency. Never shy when it comes to talking about complicated subjects, Adam divulges his ideas about the next iteration of the experimental Let’s Talk Bitcoin Network and his newly launched standalone token vending machine, SwapBot. Adam also opens up about his role as the Chief Visionary Officer of CoinPowers and why it ultimately failed as a project. We also get Adam’s take on the future of crowdfunding and what role he sees himself playing within the crypto community moving forward. Topics covered in this episode: The integral part Adam played in the creation of Epicenter Bitcoin How the Let’s Talk Bitcoin podcast show and network were born The Tokenly Platform The recent discontinuation of certain LTB Network shows LTBCoin and the problems it aims to solve Tokens Vs. cryptocurrencies Content monetization and crowdfunding Episode link

When it comes to Bitcoin, Tim Swanson is known to many as the man who sees the glass half empty. Whether or not that’s true, it’s fair to say that Tim has critical opinions about Bitcoin and questions many of the assumptions held by those who wish to see it succeed. A researcher and educator, he is the author of several books including “Great Wall of Numbers: Business Opportunities and Challenges in China” and “Great Chain of Numbers: A Guide to Smart Contracts, Smart Property and Trustless Asset Management”. He also blogs about Bitcoin, economics and various other topics at OfNumbers.com. He currently serves as an advisor to Hyperledger and is Head of Business Development at Melotic. Topics covered in this episode: True cost of Bitcoin transactions Bitcoin as a niche technology Vs. Consensus-as-a-service and semi-trusted networks Hyperledger, a decentralised ledger platform Melotic, a digital asset exchange Bitcoin’s adoption as a payment system Trusted transparency in mining Remittances Episode links: Of

Eris Industries spawned when three people got together to come up with a solution to Olivier Janssens’ £100K bounty to replace the Bitcoin Foundation with software. Their proposal, initially called Project Douglas and built on top of Ethereum, was designed to replicate the functions of a trade association on a blockchain. Today, Eris has evolved into a Distributed Application Software Stack, with which developers can rapidly deploy distributed applications that are flexible, legally compliant and secure. Interestingly, Eris allows organisations and companies to adopt blockchain technology without being fully decentralised. We’re joined by one of the Founders and COO of Eris Industries, Preston Byrne, who explains how Eris works and talks about some of the practical use cases which may arise. Siân Jones is also here to weigh in on some of the innovative aspects of this exciting open-source project. Episode links: Eris Industries: Deserver White Paper Thelonious White Paper Eris Package Manager White Paper Eri

Every quarter, CoinDesk releases its excellent State of Bitcoin Report proving an accurate benchmark of where the Bitcoin ecosystem stands. We were very fortunate to be joined by the man who compiles the State of Bitcoin Report, Garrick Hileman. As an economic historian at the London School of Economics and a frequent contributor to CoinDesk, Garrick is best know as an expert on Bitcoin and other currencies. We would like to pay our respects to the 17 innocent people who lost their lives in the recent terror attacks in Paris. Our thoughts are with their families and loved ones. Je suis Charlie! Topics covered in this episode: The recent $5m hack on Bitstamp Startup activity and VC investments The continually slumping Bitcoin price Merchant and user adoption What we should look forward to in 2015 Episode links: Garrick's Website Stake of Bitcoin 2015 Report (CoinDesk) New Index Ranks Argentina 'Most Likely' to Adopt Bitcoin (CoinDesk) This episode is hosted by Brian Fabian Crain and Sébastien Couture. Show

That the bitcoin price is highly volatile is no secret. Opinions differ on whether that is just an inevitable roadblock to be passed on the way to world domination or whether it represents a fundamental flaw that will prevent Bitcoin from ever achieving widespread use as a medium-of-exchange. Seasoned hedge fund trader and monetary systems expert Robert Sams, is of the latter view and has been among the leaders in conceptualizing what a stable cryptocurrency should look like. It’s an issue that is at the very heart of how the cryptocurrency ecosystem will develop. Topics covered in this episode: Why volatility is an obstacle to cryptocurrency adoption The two big problems of creating a stable cryptocurrency His proposal for a stable cryptocurrency: Seignorage Shares How finance professionals perceive Bitcoin Episode links: Seignorage Shares Whitepaper Robert Sams Blog Ethereum Blog Search for a Stable Cryptocurrency XeroClear Twitter This episode is hosted by Brian Fabian Crain and Sébastien Couture. Show

As we wrap up 2014, Brian and Sebastien have a fireside chat and look back on some of the areas of Bitcoin they thought were the most defining. They also look out to 2015 and give their thoughts about what to expect in the coming year. This episode also marks the show’s 1-year anniversary, so celebratory drinks are in order. No guests or scripts for this one, just a candid conversation between the Epicenter Bitcoin founders. This episode is hosted by Brian Fabian Crain and Sébastien Couture. Show notes and listening options: epicenter.tv/059

At just 20-years young, Vitalik Buterin is one of the most brilliant minds in the cryptocurrency space. Previously, a co-founder of Bitcoin Magazine, he has conceptualized Ethereum, the most radical and ambitious cryptocurrency project since Bitcoin. After raising $18m in a crowdsale, a team of over 30 are working on launching the project by March 2015. In his work on designing a system for the future, he has been grappling with many of the hardest problems in the cryptocurrency space over the past year. Topics covered in this episode: How Ethereum has evolved since the white paper The problems of Proof-of-Work Why Proof-of-Stake is the future of consensus protocols Why his main focus has been on consensus issues and scalability Why Bitcoin will never be stable enough to price things in The flawed ideology of ‘Bitcoin maximalism’ that prevents people from considering Proof-of-Work alternatives Episode links: Ethereum How to get started: Your first DApp in under one hour Ethereum Proof-of-Concept 7 Proof of

CoinTelegraph Chief Editor, Allen Scott, and writer, Ian DeMartino join Sebastien (Brian is away) for a conversation about the independent Bitcoin media. Cryptocurrencies enable new business models and monetization opportunities for content producers, which CT is fully utilizing. Allen and Ian explain their innovative system whereby content creators are paid according to the success of their articles, which it determines by measuring the number of shares on social media. CoinTelegraph is an independent news site that specializes in Bitcoin and digital currencies. Freelance writers, who all get paid in Bitcoin, produce the vast majority of their content. CT’s long-term ambition is to grow along with Bitcoin and become a front runner in the cryptocurrency news space. Episode links: Cointelegraph Article Contest This episode is hosted by Brian Fabian Crain and Sébastien Couture. Show notes and listening options: epicenter.tv/057

We are joined by Daniel Krawisz, the Director of Research at the Satoshi Nakamoto Institute. Daniel co-founded that organization last year with Michael Goldstein and Pierre Rochard to educate the Bitcoin community on the foundational ideas that led to the creation of Bitcoin. The Satoshi Nakomoto Institute is dedicated to shedding light on the ideological history of Bitcoin and keeping its controversial roots from being marginalized. Topics covered in this episode: What it means to be a libertarian, crypto-anarchist The perception of Bitcoin and the future of the bitcoin ecosystem The viability of alternative currencies Episode links: The Satoshi Nakamoto Institute Bitcoinist.net Youtube channel This episode is hosted by Brian Fabian Crain and Sébastien Couture. Show notes and listening options: epicenter.tv/056

SolidX Partners CEO Daniel Gallancy joined us for a discussion of Bitcoin, institutional investors and how his company is working on creating a bridge between the two. While there is no question that interest in cryptocurrencies has risen dramatically – also among the financial elite, there is still a big chasm separating the two worlds. With Daniel we explore how it could be bridged, when it will happen and what the consequences could be. Topics covered in this episode: How SolidX offers institutional investors exposure to bitcoin using Total Return Swaps The perception of Bitcoin on Wall Street The relationship between VC investments and direct bitcoin purchases If a derivatives market could undermine the security of Bitcoin Episode links: SolidX This episode is hosted by Brian Fabian Crain and Sébastien Couture. Show notes and listening options: epicenter.tv/055

Daniel Peled, CEO of Gems, and Tom Kysar, Marketing Lead at Koinify, join us to talk about a project that aims to revolutionize social messaging. As one of the first decentralized social networks built on blockchain technology, Gems hopes to put the ownership of the network back in the hands of its users. While large centralized social networks collect your information and sell it to advertisers, Gems is building on a different model in which users only receive solicited messages and get paid when companies advertise to them. Gems is also a cryptocurrency which can be traded between users within its mobile app. The initial crowdsale, organized by Koinify, will run from December 1st to January 5th. Episode links: Gems Koinify Gems Token Sale Details & Update on the Koinify blog This episode is hosted by Brian Fabian Crain and Sébastien Couture. Show notes and listening options: epicenter.tv/054

Keeping Bitcoins safe from theft is probably one of the things Bitcoin holders worry the most about. Historically, there have been a number of recommended best practices like paper wallets, BIP 38 wallet cards and cold storage. Although these remain relatively safe ways to store Bitcoins, implementing these solutions can be complicated and difficult to manage for day-to-day transactions. Recently, some companies have begun introducing multi-signature HD wallet services, where 2-out-of-3 signatures are required to sign transactions. These solutions offer security and usability, with the assurance that Bitcoins will remain safe, and the ability to transact with ease. In fact, the website P2SH.info tracks the adoption of multi-sig, and it has been growing exponentially in recent months. Which brings us to our guest: Arianna Simpson, an Account Specialist at BitGo, a company that provides a simple multi-signature HD wallet solution for individuals and businesses. We talked to Arianna about BitGo and the services

Today’s episode is all about Factom, an open source project which aims to solve three core problems which apply to all Bitcoin 2.0 applications: Speed, Cost, and Bloat. Rather than writing every transaction to the blockchain, Factom allows decentralized applications to write blocks of transactions to Factom blocks, which themselves get hashed and stored to the bitcoin blockchain. At its core, Factom provides Proof of Existance, which allows for any digital artifact to be reduced to a hash that proves that artifact’s existance at a specific point in time. We are joined by Factom CEO, Paul Snow, and President, Peter Kirby, to explore the different applications of Factom as well as the technical workings of this very interesting and promissing project. Episode links: Factom Factom White Paper This episode is hosted by Brian Fabian Crain and Sébastien Couture. Show notes and listening options: epicenter.tv/052

David A. Johnston is a very active member of the Bitcoin community. Aside from speaking at about every Bitcoin conference there is, David is the Managing Director of the DApps Fund, a board member MSC Protocol Foundation, as well as Co-founder and Executive Director of the BitAngels Network. On this episode we go deep in to decentralized applications, and who better to talk to about DApps than the creator of “Johnston’s Law” which states “Everything that can be decentralized, will be decentralized”. We talked to David about the recent whitepaper he co-wrote titled “The General Theory of Decentralized Applications, DApps” which defines the different types of DApps and a number of best practices with regards to funding, token distribution, business models, etc. We also discussed the DApps Fund, BitAngels Network and the Master Protocol, and his involvement with those projects. Episode links: DApps Whitepaper "Decentralized Applications - the future of Bitcoin and virtual currencies?" - CoinSummit San

Nicolas Courtois is a cryptographer and senior lecturer at University College London. He has been studying cryptocurrencies for some time and has written a number of papers on bitcoin. His talk is titled “Cryptographic Security of ECDSA in bitcoin” in which he exposes the security vulnerabilities in the specific variation of the Elliptic Curve digital Signature Algorithm used in bitcoin. Episode links: Slides for this presentation Nicolas Courtois’s Wikipedia Page Personal blog On The Longest Chain Rule and Programmed Self-Destruction of Crypto Currencies paper Nicolas’s Bitcoin Publications This episode is hosted by Sébastien Couture. Show notes and listening options: epicenter.tv/050