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Josef Jelacic

I bring mortgages onchain.

About me

Josef Jelacic

My mission is to put Ethereum to work on real-world needs. At OWN, I focus on making mortgage finance programmable onchain so assets and capital can move more efficiently. I serve on the board of the European Ethereum Institute as a founding member. I previously worked at the Ethereum Foundation and, alongside that work, I host ETHPrague.

Work

  • OWN - onchain rails for home ownership financing
  • EEI - policy advocacy for Ethereum & DeFi
  • ETHPrague - Ethereum community event at the edge of tech & culture

Speaking

  • DeFi Mortgages — Case Study - DappCon 2026
  • First Pure DeFi Mortgage - EthCC[9] 2026
  • Ethereum Is All You Need - Pragma Cannes 2026
  • Crypto Is the Real World - Devcon SEA 2024

More talks on YouTube

Writing

  1. Principles of Ethereum - 2026
  2. DAOs are hard, man! Why I'm done with PWN DAO. - 2026
  3. Ethereum is going to outlive us all! - 2025
More posts (6)
  1. Know Your Peer: The Good & Bad About KYC and the Way Out of This - 2025
  2. Introducing PWN DAO: The New Age Financial Collective - 2024
  3. PWN DAO whitepaper - December 2024
  4. Reimagining DeFi Lending Liquidity - 2024
  5. PWN Finance whitepaper - January 2021
  6. Leveraging Blockchain in Enterprises - April 2018
LinkedInXBlueSky[email protected]
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