
Zero Knowledge
Zero Knowledge is a podcast which goes deep into the tech that will power the emerging decentralised web and the community building this. Covering the latest in zero knowledge research and applications, the open web as well as future technologies and paradigms that promise to change the way we interact — and transact — with one another online.
Zero Knowledge is hosted by Anna Rose
Follow the show at @ZeroKnowledgefm (https://twitter.com/zeroknowledgefm) or @AnnaRRose (https://twitter.com/AnnaRRose)
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Latest episodes

Jan 2, 2019 • 39min
Kicking off 2019 with Jutta Steiner
In this week's episode, we sit down with Jutta Steiner, our friend and Fredrik's CEO at Parity Technologies, to talk about her history in the space, the origin of Parity, the last year in blockchain, and what we see coming in 2019!Here is the cryptography conference Fredrik mentioned: https://cyber.stanford.edu/sbc19If you like what we do: Follow us on Twitter - @zeroknowledgefmJoin us on Telegram - https://t.me/joinchat/B_81tQ57-ThZg8yOSx5gjASupport us on Patreon - https://www.patreon.com/zeroknowledge Or directly here: ETH: 0xC0FFEE1B5083230a5154F55f253B6b6ae8F29B1aBTC: 1cafekGa3podM4fBxPSQc6RCEXQNTK8Zz

Dec 26, 2018 • 46min
Merklize this! Merkle Trees & Patricia Tries
If you like what we do: Follow us on Twitter - @zeroknowledgefmJoin us on Telegram - https://t.me/joinchat/B_81tQ57-ThZg8yOSx5gjASupport us on Patreon - https://www.patreon.com/zeroknowledge Or directly here: ETH: 0xC0FFEE1B5083230a5154F55f253B6b6ae8F29B1aBTC: 1cafekGa3podM4fBxPSQc6RCEXQNTK8ZzIn this week's episode, Anna and Fredrik dig into the topic of Merkle trees. We discuss the history of the concept, explore different kinds of Merkle trees, and touch on Radix trees & Patricia Merkle tries. We also look a bit at their usage in both Bitcoin and Ethereum.The topic was a challenging one to explain without diagrams or visuals, so below we are sharing some resources we used in preperation for this episode. We will also be posting this on Github, please feel free to push additional links that might be relevant. Wikipedia definition of a Merkle TreeDan Finlay's talkMerkle Trees explainedWikipedia definition of a Radix TreeMerkling in EthereumEthereum Modified Merkle Patricia Trie systemSparse Merkle TreesBlockchain at Berkeley: Merkle trees and Patricia TriesModified Merkle Patricia Trie: How Ethereum saves a stateModified Merkle Patricia Trie SpecificationThe Merry Merkle initiativeLet us know what you think about this episode, we would love to hear from you.

Dec 19, 2018 • 37min
Get to know a Core Dev: Martin Holst Swende
In this episode, Fredrik sits down Martin, who is a Core Dev working on the Geth client and head of security for the Ethereum foundation. They chat about what got him into the space, his interest in security, his entry into blockchain development and, together, they offer some advice for devs wanting to get into this space. Special thanks to POA Network for being our sponsor on this episode. To find out more about their open source Verifiable Delay Function, or VDF, please check them out here: https://github.com/poanetwork/vdfFollow Zero Knowledge on Twitter - @zeroknowledgefmSupport us on Patreon - https://www.patreon.com/zeroknowledge Or directly here: ETH: 0xC0FFEE1B5083230a5154F55f253B6b6ae8F29B1aBTC: 1cafekGa3podM4fBxPSQc6RCEXQNTK8Zz

Dec 12, 2018 • 49min
ETHSingapore in review
In this week's episode, Anna interviews a number of participants at the ETHSingapore hackathon as part of the ETHGlobal series and tries to get a sense for how these hackers are approaching the space. In this showcase (which was recorded on the Saturday, right in the middle of the hackathon), we asked: What got you into this space? What's your take on singapore? What are you building? and What do you make of the state of Ethereum? To see our previous ETHGlobal Hackthon podcast - check out the ETHBuenosAires EpThe projects we interviewed:https://devpost.com/software/ethsingaporehttps://devpost.com/software/daico-hedge-grtcouhttps://devpost.com/software/showmewhatyougot-8bni16https://devpost.com/software/ethereumjs-orbitdbhttps://devpost.com/software/hashedgehttps://devpost.com/software/quantstamp-uihttps://devpost.com/software/ethereumjs-orbitdbhttps://devpost.com/software/dai-lyAlso thanks to @Evan_Van_Ness - happy you were finally allowed back on twitter :P Follow ETHGlobal - https://twitter.com/ETHGlobalAnd check out the upcoming events - Denver & CapeTownFollow Zero Knowledge on Twitter - @zeroknowledgefmSupport us on Patreon - https://www.patreon.com/zeroknowledge Or directly here: ETH: 0xC0FFEE1B5083230a5154F55f253B6b6ae8F29B1aBTC: 1cafekGa3podM4fBxPSQc6RCEXQNTK8Zz

Dec 5, 2018 • 52min
Digging into recursive zkSNARKs with Coda
Izaak Meckler and Evan Shapiro from O(1) Labs discuss recursive zkSNARKs, implementing sophisticated scaling solutions, the account-based database model in Coda, compressing transactions with recursive zkSNARKs, architectural choices for performance, and potential applications of zero knowledge proofs.

Nov 28, 2018 • 47min
Get to know a Core Dev: Péter Szilágyi
In this episode Fredrik sits down with Péter Szilágyi, lead developer of go-ethereum to talk about his background, what it means to be a Core Dev and some of the struggles of maintaining an open source project.Special thanks to the sponsor of this episode Trail of Bits. If you're interested in hardware wallet security, check out their article 10 Rules for the Secure Use of Cryptocurrency Hardware Wallets.

Nov 21, 2018 • 1h 12min
Vlad and Gav go head-to-head on blockchain governance
In this week's episode, we are joined by a couple greats in the space, Gavin Wood and Vlad Zamfir, to debate the merits of on-chain vs off-chain governance. If you want more, catch their governance panel at Web3Summit (which happened right before our interview).Thanks to our sponsor Trail of Bits - find out more about their upcoming event on their blog: https://blog.trailofbits.com/And support Zero Knowledge on Patreon - https://patreon.com/zeroknowledge

Nov 14, 2018 • 51min
Exploring Spacemesh with Julian Loss
In this episode, we sit down with Julian Loss, a researcher at Spacemesh, to explore DAGs, the Proof-of-Spacetime idea and the Spacemesh project. Links:Spacemesh on twitterSoK: A Consensus Taxonomy in the Blockchain EraThanks to our Sponsor POA Network!Check out their blog to find out more about their new blockchain consensus protocol, HoneyBadger BFT

Nov 7, 2018 • 1h 28min
Zooko talks Zcash on our 50th episode
Zooko, invited guest to chat about his background and explore the history of Zerocoin and Zcash. They discuss the Sapling upgrade, reducing proving times, trusted setup, and the future prospects of Zcash. They also touch on encryption, zero-knowledge proofs, the toxic waste problem, compressing witnesses, and improving smart contract execution through Z-X-E.

Oct 31, 2018 • 60min
Blockchain 101: Cryptoeconomic Primitives and Staking
In this Blockchain 101 episode, we sit down with Axel Ericsson of Vest (previously 1Protocol) to talk about Cryptoeconomic Primitives, incentive models, designing smart equilibria, and staking. Links:Game Theory GameVest on TwitterAxel on TwitterVest Website