Epicenter - Learn about Crypto, Blockchain, Ethereum, Bitcoin and Distributed Technologies

We’re pleased to be joined by the legendary cryptographer and computer scientist, David Chaum. From his early beginnings at Berkley, David pioneered many of the cryptographic techniques used in secure systems and cryptocurrencies today. Blind signatures, which are used in zero-knowledge proofs, and mix networks, used in Tor heavily rely on his work. At the dawn of the Internet, David founded DigiCash, what many believe to be a direct ancestor of Bitcoin. Today, David continues to pursue his mission to bring data privacy to all as his most recent project, Elixxir, aims to create a truly private messaging and payment app with a mass-market appeal.

Topics covered in this episode:

- David’s background as a Ph.D. student at Berkeley and his thesis entitled “Computer Systems Established, Maintained, and Trusted by Mutually Suspicious Groups”
- What drove him to work on cryptography and privacy systems
- His relationship to the early cypherpunk movement
- David’s contribution to cryptography primitives such as blind signatures, undeniable signatures, group signatures and mixers
- The story of DigiCash and how the company was founded
- The idea behind Cyberbucks and why the company ultimately went bankrupt
- Cryptocurrency adoption as a chicken-and-egg problem
- David’s personal views and practices with regards to online privacy
- His thoughts on the blockchain space today and his views on the future of the industry
- His current project, Elixxir, a messaging and payment app which protects users’ data and metadata

Episode links: 

- [David Chaum’s website](https://chaum.com)
- [DigiCash](https://www.investopedia.com/terms/d/digicash.asp)
- [lists.cpunks.org Mailing Lists](https://lists.cpunks.org/mailman/listinfo)
- [DigiCash - Wikipedia](https://en.wikipedia.org/wiki/DigiCash)
- [Blind Signatures for Untraceable Payments](https://www.chaum.com/publications/Chaum-blind-signatures.PDF)
- [DigiCash announcement article from 1994](https://www.chaum.com/ecash/articles/1994/05-27-94%20-%20World_s%20first%20electronic%20cash%20payment%20over%20computer%20networks.pdf)
- [Project Page: Multiparty Computation](https://www.chaum.com/spymasters/)
- [Security without Identification](https://www.chaum.com/publications/Security_Wthout_Identification.html)
- [Elixxir - Home](https://elixxir.io/)
- [Elixxir - Real Cryptography, Real Time: Precomputations in Elixxir](https://elixxir.io/blog/real-cryptography-real-time)
- [Elixxir - Why Mark Zuckerberg wants no privacy, why he wrote his letter, 
and why it won’t help him](https://elixxir.io/blog/why-zuckerberg-wants-no-privacy)
- [Elixxir - Point of Departure](https://elixxir.io/blog/point-of-departure)
- [cMix white paper](https://drive.google.com/file/d/1B1jv03qc8E1kx0kvGFx4blzwXrQepMyy/view)

Sponsors: 
- Vaultoro: Trade gold to Bitcoin instantly and securely starting at just 1mg - http://vaultoro.com
- Trail of Bits: Trust the team at the forefront of blockchain security research - https://trailofbits.com

This episode is hosted by Sebastien Couture & Friederike Ernst. Show notes and listening options: [epicenter.tv/304](https://epicenter.tv/304)

We're joined by Ayo Akinyele, CEO of Bolt Labs. Bolt is building a new privacy-focused layer-2 payment channel network design. Initially designed by Matt Green and Ian Meyers, Bolt is being commercialized by Ayo and his team. Beginning with a Zcash integration, they have plans to implement on several crypto networks. We chat with Ayo about the technical design of BOLT channels, their privacy guarantees, how they complement designs like Lightning, and their synergies with the Zcash team.

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This episode is hosted by Meher Roy & Sunny Aggarwal. Show notes and listening options: epicenter.tv/303

We’re joined by Eric Conner and Anthony Sassano, founders of EthHub. Started in January of 2019, EthHub’s goal is to provide a trusted, objective source of information for the Ethereum ecosystem. The platform is made up of an open-source documentation website, a weekly newsletter, and a podcast, “Into the Ether” hosted by Eric and Anthony. Both active and vocal members of the Ethereum community, they are known to embody what some consider to be Ethereum Maximalism.

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This episode is hosted by Sebastien Couture & Sunny Aggarwal. Show notes and listening options: epicenter.tv/302

This week we're joined by Daniel Shin. He is the Co-Founder of Terra Money and previous CEO and Co-Founder of TMON, one of Korea's largest players e-commerce platforms. Today he talks about his success in that area and how that drove him to enter the cryptocurrency and blockchain space with this new project.

Daniel was lead to blockchain when looking for a solution to reduce transaction fees paid by online merchants. Not satisfied with just using an existing stable coin, he set about to make his own, which is how Terra was born.

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This episode is hosted by Sebastien Couture & Friederike Ernst. Show notes and listening options: epicenter.tv/301

We’re joined by Erik Voorhees, Founder & CEO of Shapeshift. His third appearance on the podcast is timed nicely as July marked ShapeShift’s fifth anniversary. From its early days as the “Google Translate for cryptocurrencies”, it has grown into an organization of 75 people, and Erik talks about the learning curves he has endured on his journey. Our conversation also coincides with the launch of ShapeShift’s brand new V2 platform, which includes a self-custodial asset management dashboard, hardware wallet support, and many other new features. One notable change is that ShapeShift now requires users to create an account and perform KYC, something which very much pains Erik. We also discuss Bitcoin, Libra, and the future of money, topics which are always fascinating to approach from Erik’s Libertarian viewpoint.

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This episode is hosted by Sebastien Couture & Friederike Ernst. Show notes and listening options: epicenter.tv/300

We're joined by Igor Barinov, the tech lead of the POA Network. The POA Network achieves a reduction in transaction costs by many orders of magnitude by having a set of trusted validators. All validators must be US public notaries, so their identities are known and legal recourse against them can be taken in the offchain world. We also talk about the xDai network, which enables Dai transactions on a POA chain: Dai are transferred into a smart contract on the mainnet and then become available to be transferred at much lower cost on the POA Network. Similarly, they can be transferred out of the xDai network and become available again on the mainchain. We talk about use cases, governance, and limitations.

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This episode is hosted by Meher Roy & Friederike Ernst. Show notes and listening options: epicenter.tv/299

We're joined by Rune Christensen, CEO and Co-Founder of MakerDAO. We discuss the rise of Maker DAI as an algorithmically backed stable token and get into the weeds of the new version featuring multi collateral DAI as well as the ability to natively generate interest on DAI. We also cover the current governance model and how this can be attacked. The governance will undergo an overhall for the new version of Maker, introducing an Emergency Shutdown that can be triggered through MKR holders and promises to make the system more resilient. Lastly, we venture into what Rune hopes the future will bring for MakerDAO.

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This episode is hosted by Sunny Aggarwal & Friederike Ernst. Show notes and listening options: epicenter.tv/298

We’re joined by Ameen Soleimani, Co-founder and CEO of SpankChan. From his humble beginnings at ConsenSys, he went on to create SpankChain in 2017 at the height of the ICO boom. The project aims to create a better and safer environment for sex workers by removing the intermediaries who take significant commissions on their revenues. SpankChain’s initial product, an adult cam platform, allows users to pay performers in crypto with a native asset over sophisticated payment channels. More recently, Ameen headed a project called Moloch DAO, a decentralized autonomous organization with the goal to fund Ethereum 2.0 development. Moloch has but few simple functions: making proposals, voting on proposals, and exiting. This simple design, heavily inspired on “The DAO” of 2016 has attracted funding from Vitalik Buterin, Joe Lubin and other prominent community members.

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This episode is hosted by Sebastien Couture & Friederike Ernst. Show notes and listening options: epicenter.tv/297

We’re joined by Jerry Brito, Executive Director of Coin Center. Having discovered Bitcoin in 2011, Jerry was among the first lawyers to talk about crypto in the U.S. capital. In 2014, he founded Coin Center, a leading research and advocacy center focussing on cryptocurrencies.

In this enlightening conversation, we talk to Jerry about his paper titled “The Case for Electronic Cash,” in which he articulates why private peer-to-peer payments are essential to an open society. We also discuss Libra and the possible regulatory challenges the proposed private cash system may face. Finally, Jerry explains the recent FinCEN guidance on cryptocurrencies, which broadly follows the recommendations of Coin Center.

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This episode is hosted by Sebastien Couture & Meher Roy. Show notes and listening options: epicenter.tv/296

In this episode, we caught up with Robert Leshner, founder of the Compound protocol. Compound is a fascinating smart contract protocol, running atop Ethereum, that allows users to lend and borrow specific ERC-20 tokens with a duration-free interest model. The protocol acts as a central borrower and lender of user tokens and algorithmically prices the interest charged to borrowers and lenders. Compound is one of the first examples of a well-functioning lending market built using smart contracts.

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This episode is hosted by Meher Roy & Friederike Ernst. Show notes and listening options: epicenter.tv/295