Stay ConnectedEpicenter 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.
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Christian Decker is a PhD student at ETH Zurich, where he is currently finishing up the world’s first PhD thesis entirely about Bitcoin. The computer scientist has been part of the Bitcoin community since 2009 and just recently turned off his last miner after 6.5 years!
We talked about the current scalability debate and what his research indicated what blocksize could reasonably be handled today. We also discussed his proposal for Duplex Micropayment Channels. Like the Lightning Network, Duplex Channels use a network of payment channels to enable cheap, instant and trustless offchain transactions. The proposal, which he is currently implementing, is one of the most promising approaches to scaling Bitcoin.
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This episode is hosted by Brian Fabian Crain and Meher Roy. Show notes and listening options: epicenter.tv/106
With Proof-of-Stake (PoS) a blockchain is secured not by spending an external resource such as electricity but by using value internal to the chain itself. The promise of higher security at a lower cost is what also drives Ethereum to plan a move away from Proof-of-Work to PoS in the future.
Ethereum researcher Vlad Zamfir, who leads their effort in the complex search for the optimal PoS consensus system joined us for an in-depth discussion of the challenges of PoS, the approach Casper is taking and what consensus in Ethereum land could look like in the future.
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This episode is hosted by Brian Fabian Crain. Show notes and listening options: epicenter.tv/105
Businesses with the alleged potential to become the next Google are plentiful in Bitcoin-land, but finding actual commercial success is a lot harder. The best example of a commercial success is gift card company Gyft that became known as the first place to give access to a wide range of merchants for bitcoin holders and later achieved the largest exit so far in the crypto space in an acquisition by payments company First Data.
Gyft CTO joined us to talk about how he got involved in FinTech, what makes gift cards so interesting and how recently Gyft has been trying to reinvent gift cards by using the power of the blockchain.
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This episode is hosted by Brian Fabian Crain and Sébastien Couture. Show notes and listening options: epicenter.tv/104
One of the concerns confronting the Bitcoin community is that of scaling the transaction throughput rate: How do we go from the current rate of approx. 5 transactions per second to a thousand times that?
In this episode, we talk to Emin Gun Sirer and Ittay Eyal from Cornell University regarding Bitcoin NG; a next generation Bitcoin blockchain design that addresses some protocol based limitations preventing Bitcoin from increasing transaction throughput.
Their proposal also enables fast (initial) transaction confirmations on the order of 10-20 seconds.
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This episode is hosted by Meher Roy and Sébastien Couture. Show notes and listening options: epicenter.tv/103
Among the dividing themes in the Bitcoin space is the idea of public versus private blockchains. While some argue that private and permissioned blockchains can offer better scalability and lower latency for enterprises, others insist the Bitcoin blockchain will offer the best level of security and robustness longterm. Recently, projects have emerged that propose the best of both worlds by leveraging both off-chain and on-chain transactions.
This is the idea behind Openchain, an “open source distributed ledger technology, suited for organizations wishing to issue and manage digital assets in a robust, secure and scalable way.” Openchain uses a client-server model where there is only one authoritative validating node. Read-only observer nodes keep the central node honest by auditing transactions in real time. About every 10 minutes, a copy of the Ledger, and its transactions, is hashed and inserted into a Bitcoin transaction so that it can be fossilised in the blockchain.
We’re joined by Flavien Charlon, the one-man operation behind Predictious, Coinprism, the Open Transactions Protocol and now Openchain. We talk about this fascinating new software, which aims to offer enterprises a digital ledger protocol that is highly scalable while enjoying the benefits of the Bitcoin blockchain for immutability.
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This episode is hosted by Brian Fabian Crain and Sébastien Couture. Show notes and listening options: epicenter.tv/102
A brilliant fact about crypto-economic blockchains is that they enable the construction of naming systems that transcend limits imposed by Zooko’s triangle. Traditional naming systems such as human names, Domain Name System (DNS) and Facebook profile names are subject to Zooko’s triangle and cannot be secure, human memorable and decentralised at once. For instance human names such as Meher Roy are human-memorable and decentralised but not secure (nothing prevents hundreds of people being called Meher Roy). Domain Names like are secure and human-memorable but require a central authority to hand out names.
OneName leverages Bitcoin to build a Global Identification system called blockchain ID. Blockchain IDs for users can be associated with real world identity data such as social media profiles, government issued papers etc. In this episode we converse with Ryan Shea and Muneeb Ali, co-founders and leaders of OneName, Blockstore and BlockStack. They explain the rationale and vision behind their push for a Global Decentralised Identification and Verification system.
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This episode is hosted by Meher Roy and Sébastien Couture. Show notes and listening options: epicenter.tv/101
We’ve made it to episode 100! Our guest for our celebratory episode is Juan Benet, inventor of the Inter-Planetary File System and founder of Protocol Labs. IPFS is a distributed file system that seeks to connect all computing devices with the same system of files. The possibilities for IPFS could range from distributed cloud hosting to websites without central servers to even replacing HTTP. It’s a project as audacious as any we’ve had on the podcast and Juan did an outstanding job explaining the technology and vision.
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This episode is hosted by Brian Fabian Crain and Sébastien Couture. Show notes and listening options: epicenter.tv/100
One of the key innovations of Bitcoin is the ability to easily implement payment channels. A number of use cases have been discussed or demonstrated, among which is the idea of pay-per-use. This is particularly useful when charging for things like WiFi or streaming video by the second. With this in mind, one could imagine a line of communication between two peers, where data flows in one direction and payments flow in the other.
This is the idea behind Streamium, a free and open-source service which allows content creators to stream live video directly to viewers, and get paid instantly. We’re joined by Manuel Aráoz and , the two brilliant software engineers from Argentina who created Streamium. They have worked together on numerous Bitcoin projects these past few years, including ProofOfExistence.com, Faradam, Decentraland, RelayStore, and actively contributed to the BitCore javascript library.
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This episode is hosted by Meher Roy and Sébastien Couture. Show notes and listening options: epicenter.tv/099
When invented the concept of prediction markets almost thirty years ago, he felt he had stumbled on a concept with huge implications. By allowing people to bet on the likelihood of future events, prediction markets promise to allow better forecasts and better decision making.
Research into the area has been vibrant, culminating in Hanson’s concept of Futarchy: A prediction-market based governance system. At the same time, the real-world applications have been few and far.
Hanson, an associate professor of economics at George Mason University, joined us to discuss his invention, futarchy and the challenges of disruptive technology.
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This episode is hosted by Brian Fabian Crain and Meher Roy. Show notes and listening options: epicenter.tv/098
Prediction markets are considered one of the most promising applications of blockchain technology. Although the concept and some early implementations have existed for years, decentralized prediction markets present a number of advantages to their centralized counterparts.
joins us to discuss Truthcoin, a “Peer-to-Peer Oracle Protocol which absorbs accurate data into a blockchain so that Bitcoin-users can speculate in Prediction Markets”. We dive deep to explore the advantages of decentralized prediction markets, their various real-world applications, and their potential to revolutionize the creation and propagation of knowledge in our society.
On this episode, we are thrilled to introduce a new co-host on Epicenter Bitcoin, Meher Roy. He has a biochemical engineering background and previously worked as an adviser to HyperLedger. Since discovering Bitcoin, he spends most of his free time understanding blockchain technology and its potential impact on our lives. We’re confident that Meher will bring a high level of understanding and critical thinking to the topics we cover, and we’re certain our listeners will be as happy as we are to have him on the show.
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This episode is hosted by Meher Roy and Sébastien Couture. Show notes and listening options: epicenter.tv/097
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