Fredrik Harrysson
Co-Host of Zero Knowledge
Programmer, Gamer, Hiker, Traveller
Blog: http://medium.com/@folsen
Core Developer @ParityTech
Fredrik Harrysson has hosted 128 Episodes.
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Episode 141: ZK & Games: Dark Forest with Brian Gu
August 5th, 2020 | 1 hr 2 mins
3 body problem, blockchain, blockchain game, ethereum, learning group, privacy, technology, video game, zero knowledge, zksnarks
In this week's episode, we chat with Brian Gu, a student at MIT and creator of the Dark Forest game. We chat about education in the space, blockchain based games and how Dark Forest was inspired. We then dig into how this game creates an incomplete information game space by using zkSNARKs to create a “cryptographic fog of war” and more!
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Episode 140: Staking derivatives & DeFi with Alex Evans (and Tarun!)
July 29th, 2020 | 1 hr 14 mins
blockchain, crypto, crypto finance, cryptoeconomics, decentralised finance, defi, proof-of-stake, stalking rewards, validators
In this week’s episode, Anna and guest-host / frequent guest Tarun catch up with Alex Evans, researcher at Placeholder Capital. They dive into the latest in DeFi, a topic that we don't cover too often, but is hard to ignore. Specifically they discuss the emergence of liquidity farming, the difference between the zero knowledge Research space and the DeFi space, some emerging concepts like AMM and staking derivatives, and cover a recent report Tarun and Alex published together on the impact of staking derivatives on the security of PoS systems.
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Episode 139: Findora with Benedikt Bunz and Ben Fisch
July 22nd, 2020 | 56 mins 30 secs
blockchain, crypto, cryptography, findora, privacy tech, supersonic, zero knowledge, zkps
This week, we catch up with Benedikt Bunz and Ben Fisch, PhD students at Stanford, once again. In this episode, we dive deeper into Findora, a project that was co-founded by Ben (who is also the CTO) and where Benedikt works as the Head of Research. We look at what the Findora project is, discuss the "selective disclosure" concept at the heart of their constructions, explore the balance between transparency and privacy and describe what problems Findora aims to solve.
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Episode 137: Trusted Setup Bonus: Tornado Cash
July 8th, 2020 | 29 mins 2 secs
blockchain, learning group, powers of tau, privacy, snarks, technology, trusted setup, zero knowledge
In this week's episode, Anna follows up on the trusted setup survey she did in her previous episode on the topic with this bonus interview with Tornado Cash. Tornado Cash's trusted setup, held in May 2020, was the largest to date with over 1000 participants.
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Episode 134: tBTC with Matt Luongo
June 17th, 2020 | 58 mins 21 secs
bitcoin, blockchain, blockchain bridges, btc bridges, crypto, cryptocurrency, ethereum, tbtc
In this episode, we chat with Matt Luongo, CEO of Thesis, founder of Keep, and project lead of tBTC. We cover the need for BTC to ETH bridges, what the challenges are in building bridges with BTC, tBTC and how it is setup, what went down with the initial tBTC release - an event the team now refers to as "release candidate 0", and where we might be seeing tBTC go next.
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Episode 132: Handshake Protocol with Mark Tyneway
June 3rd, 2020 | 55 mins 11 secs
blockchain development, decentralisation, dns, handshake protocol, handshake.org, light client
In this episode, we chat with Mark Tyneway who is a contributor on the Handshake Protocol project - an experimental peer-to-peer root naming system. We learn about this decentralised, foundation-free project, the issues of DNS, how Handshake plans on fixing this, how it differs from ENS, their unique airdrop process, what an Urkel Trie is, and more.
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Episode 131: Proof of Necessary Work with Akis Kattis (NYU)
May 27th, 2020 | 59 mins 11 secs
blockchain, decentralisation, nyu, proof of necessary work, proof of stake, proof of work, snarks
In this week's episode, Anna and guest host Tarun Chitra chat with Akis Kattis, a PhD student at NYU & the co-author of Proof of Necessary Work: Succinct State Verification with Fairness Guarantees - a paper he co-wrote with Joseph Bonneau. They discuss the challenge of Proof of Useful Work, the unique properties that SNARKs have, such as puzzle hardness, that allow for PoNW to overcome these challenges, PoS SNARK systems, elastic block construction, and more.
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Episode 129: IPFS 0.5 with Molly Mackinlay from Protocol Labs
May 13th, 2020 | 58 mins 16 secs
decentralised technology, decentralised web, developer community, ipfs, libp2p, netflix, protocol labs, ux
In this episode, we chat with Molly Mackinlay, Project Lead for the InterPlanetary File System (IPFS) at Protocol Labs. We talk about her journey to Protocol Labs, as well as take a deeper view into IPFS, LibP2P, Bitswap, Testground, the use cases and projects working with these tools, and the specific upgrades they have made with the recent 0.5 IPFS release. We also chat about the path to decentralisation and the importance of building bridges to the Web2 world.
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Episode 128: DP-3T & Contact Tracing with Kenny Paterson from ETH Zurich
May 6th, 2020 | 1 hr 1 min
contract tracing, covid-19 privacy, cryptography, dp-3t, europe technology, privacy tech
In this week's episode, Anna catches up with Kenny Paterson, Professor of Computer Science and Lead of Applied Cryptography Group at ETH Zurich. The goal of the episode is to take a deeper look at DP-3T and privacy preserving contact tracing research in Europe generally. They cover his work at ETH Zurich, discuss how the DP-3T project came to be, look at risks facing contact tracing protocols generally, and discuss why putting privacy and decentralisation at the heart of these types of protocol is so important.
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Episode 127: Consensus Algorithms & HotStuff with Ittai Abraham
April 29th, 2020 | 1 hr 2 mins
blockchain, consensus, consensus protocols, cryptography, hotstuff, libra, proof of stake, vmware
In this week's episode, we go deep on Consensus Algorithms and HotStuff with Ittai Abraham from VMware Research. We chat about the evolution of consensus algorithms, BFT, and how these early ideas have become the backbone of blockchain tech. We cover PBFT, Tendermint and Ittai's research into SBFT, HotStuff, and the improvements he has been working on since HotStuffs incorporation into Facebook's Libra protocol.
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Episode 126: Crypto libraries, Zcash's Zebra and contact tracing with Henry de Valence
April 22nd, 2020 | 1 hr 6 mins
contact tracing, coronavirus, crypto libraries, cryptography, pandemic, privacy, privacy tech, tcn coalition, zcash
In this week's episode, we chat with Henry de Valence from the Zcash Foundation. We discuss what makes for a strong crypto library, some of the work he has been doing at the ZF and he shares an update about the Zebra Zcash client. We also learn about the TCN Coalition, a group he is working with that aims to build and evaluate privacy-preserving contact tracing protocols - an important tool in the fight against the coronavirus pandemic.
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Episode 125: Mixnets and privacy technology with Claudia Diaz from Nym
April 15th, 2020 | 1 hr 4 mins
cryptography, european privacy, mixnets, nym, privacy technology, privacy-preserving, zero knowledge
In this episode, Anna catches up with Claudia Diaz, professor at KU Leuven and the Chief Science Officer at Nym Technology to learn about mixnets, the history of privacy technology and how there may be some opportunities for new privacy tech to emerge in this post-pandemic world.
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Episode 124: Exploring FHE with Flavio Bergamaschi from IBM Research
April 8th, 2020 | 1 hr 4 mins
cryptography, fhe, homomorphic encryption, ibm research, mpc, technology, zero knowledge
In this episode, we chat with Flavio Bergamaschi from IBM research about his work on Fully Homomorphic Encryption (FHE). FHE allows for computation on encrypted data. First developed in 2009 at IBM, this tech has long been the considered only theoretically possible. However, as we learn in the interview, there have been strides made in the last few years and we are starting to see FHE technology being used in some real world applications.
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Episode 123: Halo with Sean Bowe and Daira Hopwood from ECC
April 1st, 2020 | 1 hr 8 mins
ecc, electric coin company, halo, recursive snarks, trusted setup, zcash, zero knowledge
In this episode, we catch up with Sean Bowe and Daira Hopwood from the Electric Coin Company (ECC) to chat about Halo, a recursive proof composition that doesn't require a trusted setup. We cover the efficiency techniques used in Halo such as "nested amortization", how the protocol was developed, what some of the key findings are, and how it fits in with the other recent SNARK-based protocols.
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Episode 122: ZKPs, Audits & Security with Benjamin Perez from Trail of Bits
March 25th, 2020 | 54 mins 2 secs
blockchain, cryptographic vulnerability, cryptography, security, technical audit, whitepaper, zero knowledge
In this week's episode, we chat with Benjamin Perez from Trail of Bits about the evolution of the crypto tech auditing business, the new challenges that emerge in zero knowledge proof systems regarding security, some of the recent bugs and vulnerabilities found in zkp systems and more!
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Episode 121: Urbit with Galen Wolf-Pauly from Tlon
March 18th, 2020 | 1 hr 17 mins
decentralisation, distributed systems, operating system, peer-to-peer, tech, urbit
In this episode, we meet with Galen Wolf-Pauly from the Tlon Corporation to discuss the project Urbit. Urbit is an encrypted peer-to-peer network comprised of a deterministic operating system (Urbit OS / Arvo) and a secure, global identity layer (Urbit ID / Azimuth). The Urbit contributors have created new stack, built from the ground up as an integrated system with a focus on user experience.