Zahary Karadjov, Blocksense: Decentralized Oracles: Harder than you think | ETHSofia 2024

Thu, Oct 2, 2025, 12:00 AM

In this talk, Zahary Karadjov will walk you through the history of decentralized oracle protocols and the key problems that made them challenging until now. Learn how the power of smart contracts and ZK circuits can be used by cunning adversaries to automate the corruption of the participants in decentralized protocols and how perverse incentives make the cryptoeconomic security of oracles particularly elusive. Speaker: Zahary Karadjov, Founder and CEO of Blocksense Chapters: 00:00 - Introduction and Overview 02:01 - Importance of Decentralized Oracles 02:36 - Issues with Centralized Oracles 03:07 - The Need for a Decentralized Oracle Protocol 04:09 - Incentivizing Truthful Data Reporting 05:24 - Attack Scenario: Manipulating the Consensus 08:22 - Smart Contract Vulnerabilities and Attack Methods 13:03 - Appeal Mechanisms in the Oracle Network ETHSofia is THE crypto tech conference in Sofia, Bulgaria, bringing together enthusiasts, developers, researchers, and academia focused on Ethereum and other L1 chains. The conference is supported by the Ethereum Foundation and made possible by the generous contributions of industry leaders. For more information, please visit: https://www.ethsofia.com/ 🌍Join the community: X (Twitter): https://x.com/ETHSofiaBG Telegram: https://t.me/+_i70pgfFHjBkMjZk LinkedIn: https://www.linkedin.com/company/ethsofia/ #Blocksense #ZaharyKaradjov #ETHSofia #ETHConference #EthereumConference #ethereumcommunity