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Epicenter Media Ltd.
Epicenter brings you in-depth conversations about the technical, economic and social implications of cryptocurrencies and blockchain technologies. Every week, we interview business leaders, engineers academics and entrepreneurs, and bring you a diverse spectrum of opinions and points of view.
Epicenter is hosted by Sebastien Couture, Brian Fabian Crain, Friederike Ernst, Meher Roy and Felix Lutsch. Since 2014, our episodes have been downloaded over 8 million times.
Epicenter is hosted by Sebastien Couture, Brian Fabian Crain, Friederike Ernst, Meher Roy and Felix Lutsch. Since 2014, our episodes have been downloaded over 8 million times.
Episodes
Mentioned books

Apr 4, 2016 • 1h 9min
Florian Glatz: Defining a Legal Framework for Decentralized Autonomous Organizations (DAO)
The relatively new concept of a Decentralized Autonomous Organization (DAO), is often praised as a new type of organizational structure that has no identifiable owner or owners, and whose actions are automated and determined solely by a pre-defined set of rules. Views on DAOs differ widely. On one hand, members of the Bitcoin/blockchain space often portrayal them as AI-like swarm organisms, free from the shackles of nation-states, and that can act at will regardless of laws or regulation. On the other hand, legal experts caution that, like corporations, DAOs and their creators could be held liable in civil lawsuits, and that they may be served a hard dose of reality when they end up in court.
We are joined by Florian Glatz, attorney, researcher and software developer (not to mention the proud owne r of the awesome domain name blockchain.lawyer). We discuss some of the basic legal concepts surrounding contracts and in what ways smart contracts may or may not fit within our existing legal framework. We also dive deep into DAOs, and address some of the challenges they may pose in the near and distant future.
Topics covered in this episode:
The history of innovation in law
How merchant law (Lex Mercatoria) emerged in the 13th century
How we can define smart contracts
The legality of smart contacts
The need for natural language contracts vs. contracts which are written in code
Decentralized Autonomous Organizations
The Slock.it DAO
What would happen if one tried to sue a DAO
Episode links:
Florian's Website
What are Smart Contracts? In search of a consensus
Smart Contracts, Platforms and Intermediaries
How to Sue A DAO
How to Incorporate a DAO
This episode is hosted by Brian Fabian Crain and Sébastien Couture. Show notes and listening options: epicenter.tv/125

Mar 28, 2016 • 1h 20min
Rune Christensen: Maker DAO Ethereum’s Decentralized Central Bank
The challenges Bitcoin’s wild volatility represents for achieving mass adoption have made the necessity for stable cryptocurrencies apparent long ago. With Ethereum applications, the problem is even more apparent as many use cases from predcition markets to insurance are impractical using the even more volatile ether. Maker DAO is an ambitious attempt to solve the problem by building a bank-like system to issue a value-stable currency on Ethereum.
Rune Christensen joined us to discuss the need for Maker and the complex system to guarantee stability.
Topics covered in this episode:
Why money is the most successful product ever
What makes stablecoins are necessary
The different components of Maker such as the stablecoin Dai, the token MKR and the role they play
Why Maker needs insurance against black swan events
Maker’s different planned stages of increasing decentralization
The MKR token sale and its value proposition for investors
Episode links:
Maker DAO
Maker DAO Whitepaper
Maker DAO DevCon Talk
EB60 with Robert Sams: Volatility and the Search for a Stable Cryptocurrency
This episode is hosted by Brian Fabian Crain and Meher Roy. Show notes and listening options: epicenter.tv/124

Mar 21, 2016 • 1h 14min
Brock Pierce: From Digital Goods to Digital Currency
We’re joined by , Chairman of the Bitcoin Foundation, investor and all around emblematic figure of the Bitcoin ecosystem. Brock tells his story, from his early beginning a entrepreneur in his teens, to the massively successfull video game industry businesses he built in the early 2000s.
As Chairman of the Bitcoin Foundation, he gives us his perspective on how the Foundation’s role has evolved over time and its areas of focus going forward. Brock also weighs in the recent debates around governance and block size.
Topics covered in this episode:
The lemonade-stand beginnings of Brock’s entrepreneurship story
How he became involved in gaming and pioneered the sale of digital goods
The 400,000-strong professional gamer supply chain he built in China
His first contact with Bitcoin and the initial concerns he had
Blockchain Capital and how he ended up investing in dozens of Bitcoin startups
The blocksize debate and whether Bitcoin needs an explicit governance process
The future of the Bitcoin Foundation
Episode links:
This Week in Startups with Brock Pierce
The Finanser Interview with Brock Pierce
Blockchain Capital
Brock Pierce – Bitcoins Are The Digital Gold 2.0
This episode is hosted by Brian Fabian Crain and Sébastien Couture. Show notes and listening options: epicenter.tv/123

Mar 14, 2016 • 1h 6min
Zooko Wilcox-O'Hearn: Zcash – An Open Financial System with Privacy
For Zooko Wilcox-O’Hearn, part of the cypherpunk movement since the early 1990s, the vision of a decentralized financial system that has both openness and privacy has existed since long before Bitcoin. After many failed attempts, Bitcoin proved that that vision could be achievable. But Bitcoin also failed to deliver on the privacy features as blockchain analysis allows tracing movements and deanonymizing many users.
Zooko joined us to discuss his project Zcash, a fully anonymous cryptocurrency that is scheduled to launch in July. Through Zcash’s use of ground-breaking Zero Knowledge Proofs (or zkSNARKs) the blockchain will leak no information about sender, recipients nor amounts. It was a fascinating discussion of the most anticipated launch of a cryptocurrency since Ethereum.
Topics covered in this episode:
Zooko’s long cypherpunk history
How overconfidence derailed many cypherpunk projects
Why Bitcoin’s privacy is broken and how Zcash provides true privacy
The too-good-to-be-true Zcash team
Why Zcash is based on a fork of Bitcoin
How the initial parameter generation creates a potential security weakness
Why Zcash believes in an evolutionary approach to designing cryptocurrency protocols
Episode links:
Zcash website
Why Zcash - Project Announcement
Zerocash: Decentralized Anonymous Payments from Bitcoin [PDF]
EB116 - Eli Ben-Sasson: Zero Knowledge Proofs
This episode is hosted by Brian Fabian Crain and Meher Roy. Show notes and listening options: epicenter.tv/122

Mar 7, 2016 • 59min
Jeremy Stephen & Winston Moore: Barbados, Bitcoin and Central Banking
For orthodox Bitcoiners central banks are often seen as the incarnation of evil. But , alas, in the case of two Carribean central banking economists the feeling of reprehension wasn’t reciprocated. Winston Moore and Jeremy Stephen were formerly associated with the Central Bank of Barados and fascinated by the potential of cryptocurrencies, they explored the consequences of their central bank holding Bitcoin as part of their international reserves. They joined us for a discussion of central banking, the pecularities of monetary policy in a small island nation and what Bitcoin could bring to the equation.
Topics covered in this episode:
The function of central banks
The role international reserves hold for central banks
The peculiar challenges of central banks of small island nation states
How speculative attacks on central banks work
Why central banks may want to hold cryptocurrencies as part of their portfolio
How Bitt plans to issue Barbados Dollar using the Bitcoin blockchain and the open asset protocol
Episode links:
Paper on inclusion of cryptocurrencies in international reserve portfolio of Central Bank of Barbados [PDF]
Barbados Cryptocurrency Startup Bitt
Bitt launches Barbados Dollar on blockchain
Winston Moore's Website
Jeremy Stephen's Website
EB Episode 83 with David Andolfatto on Fedcoin and central bank issued cryptocurrencies
This episode is hosted by Brian Fabian Crain and Meher Roy. Show notes and listening options: epicenter.tv/121

Feb 29, 2016 • 1h 10min
Maciej Olpinski: Solving the Economic Mismatch Between Content and Attention
The problem around content monetization is one which content producers are constantly trying to solve. At the core of this problem is a mismatch between supply and demand. Content, which is increasingly abundant, is captured by human attention, which is in limited supply. The volume of content being produced is growing at staggering rates while total human attention remains flat.
Our guest, , argues that the current content monetization model is outdated, broken and is in need of an overhaul. Previously at Google and YouTube, Maciej has a broad understanding content monetization models and lays out a vision for open marketplaces for attention using blockchains. He argues that content discovery systems like the Google Page Rank algorithm and Facebook’s News Feed could be replaced by open networks based on the mechanics of Bitcoin.
Topics covered in this episode:
How the current content monetization model works and why it’s broken
The inner workings of content discovery
The economics of content discovery
Open marketplaces for attention and reputation
New web-native business models for content discovery
Episode links:
Maciej's blog
This episode is hosted by Meher Roy and Sébastien Couture. Show notes and listening options: epicenter.tv/120

Feb 22, 2016 • 1h 5min
Adam Gibson: A New Kind of Auditing – Cryptographic Proof of Online Accounts
A pioneering feature of Bitcoin is verifiability of transactions: It is designed to enable low-power devices and high end computers alike to be able to verify occurrences on the blockchain.
This observation led our guest, Adam Gibson, to wonder why webpages aren’t so easily verifiable as a Bitcoin transaction? Can I prove to you that I have certain bank account balance over the internet? Why do we submit photocopies of passports rather than furnishing a cryptographically verifiable proof of citizenship by logging on to a Government site?
Born out of this intellectual itch is the TLS Notary protocol. It pioneers a new kind of auditing that enables participants to prove that a certain https page was in their browser. This protocol paves the way to brilliant designs for Proof of Reserves, Smart contract oracles and Decentralised fiat-to-bitcoin exchange.
Topics covered in this episode:
Why is the current Web structured to be not easily verifiable?
What is TLS and how does it work?
How TLS differs from SSL
The TLS Notary protocol
Capabilities and limitations of TLS Notary
Applications of TLS Notary including provably honest smart contract oracles
Episode links:
The TLS Notary website
Oraclize, the provably honest oracle service
The TLS specification (TLS 1.0 RFC 2246)
This episode is hosted by Meher Roy and Sébastien Couture. Show notes and listening options: epicenter.tv/119

Feb 15, 2016 • 1h 19min
Manu Sporney: W3C – Making Payments a Web Standard
A typical online transaction today isn’t very different from how it was done 25 years ago at the dawn of the Internet. In fact, online payments haven’t changed much at all. When we want to pay for something online, we copy very sensitive credit card information into a form on a website and trust that website to capture it securely and make proper use of it. If this seems like an old and antiquated way to pay, that’s because it is, and it costs billions of dollars per year in security and fraud prevention. The World Wide Web Consortium wants to standardize the way we pay online, making it more secure, and hopefully a better experience for users.
is a computer scientists and Standards Lead at the W3C. We talk about some of the core problems with dealing with credentials on the web and making online payments. Specifically, we discuss the Web Payments Working Group (WPWG), and their efforts to bring banks, payments providers and browser manufacturers together to converge around a standard set APIs to make for a better and more secure payment experience for all users.
Topics covered in this episode:
Manu’s interest in Bitcoin and blockchains
His role in building the JSON-LD standard
What is the W3C, what are it’s roles and how does it operate
The level of interaction between the Bitcoin community and the W3C
The fundamental problems of dematerialised payments online
What it means to standardize payments online
The Interledger Payments Community Group
Manu’s company Digital Bazaar
Episode links:
Web Payments at the W3C
Digital Bazaar
This episode is hosted by Meher Roy and Sébastien Couture. Show notes and listening options: epicenter.tv/118

Feb 8, 2016 • 1h 9min
Eric Lombrozo: Upgrading Bitcoin with Segregated Witness
In the midst of the heated blocksize debate one could be forgiven to think that there is very little Bitcoin developers are able to agree on. Yet, when core developer and Blockstream co-founder Pieter Wuille introduced the concept of segregated witness at the Scaling Bitcoin conference in Hong Kong most of the Bitcoin community quickly rallied behind the proposal.
Eric Lombrozo, CEO of wallet company Ciphrex and responsible for running the segregated witness testnet, joined us to discuss the proposal and its implications. Segregated witness, it turns out, does not only provide an elegant way to increase the blocksize via a soft-fork, it also solves transaction malleability and greatly simplifies updating the Bitcoin’s scripting language. It’s a crucial topic and may well enable a new wave of accelerated innovation in Bitcoin.
Topics covered in this episode:
The various benefits of segregated witness
The mechanics of segregated witness
How segregated witness solves transaction malleability
How segregated witness could increase the blocksize to 2-3MB with a soft fork
What segregated witness means for wallet developers
How segregated witness could facilitate development of off-chain networks such as Lightning Network
The important difference between hard forks and soft forks
How segregated witness will allow updates of Bitcoin’s script language via soft forks
Episode links:
Scaling Bitcoin Talk by Pieter Wuille
Let's Talk Bitcoin! #277 Separating Signatures with Segregated Witness
Gavin Andresen: Segregated Witness is Cool
Bitcoin Magazine Series on Segregated Witness Part 1
Part 2
Part 3
Eric Lombrozo's company Ciphrex
This episode is hosted by Brian Fabian Crain and Sébastien Couture. Show notes and listening options: epicenter.tv/117

Feb 1, 2016 • 1h 8min
Eli Ben-Sasson: Zero Knowledge Proofs
Zero Knowledge Proofs are methods of providing cryptographic proofs to another party while keeping some information secret. The simple concept of ZKP offer tantalizing possibilities: Banks could prove solvency without revealing depositors. Governments could prove the fairness of an election without compromising privacy.
Computer science professor Eli Ben-Sasson joined us to discuss where blockchains and cryptocurrencies intersect with Zero Knowledge Proofs and related technologies such as zkSNARKs. It offered a fascinating view into what will surely become a core part of blockchain tech in the future.
Topics covered in this episode:
What are proof systems?
Zero Knowledge Proofs (ZKP) and other terminology such as SNARKs and zkSNARKs
The mechanics of Zero Knowledge Proofs
The role of performance in Zero Knowledge Proofs
Applications of ZKPs
The widespread potential impact of ZKP to verify processes
Episode links:
Eli Ben-Sasson's Website
SNARKs for C talk by Madars Virza
Stackexchange: What are SNARKs
SNARKs for C paper [PDF]
Zerocash Talk
This episode is hosted by Brian Fabian Crain and Meher Roy. Show notes and listening options: epicenter.tv/116