ETHSofia · Oct 6, 2026

Matěj Husák of Trezor argues that self-custody has solved the keys but not the data, such as transaction labels that usually end up in a local file or someone else's cloud. He explains the local-first approach, named in a 2019 Ink and Switch essay, where the device is the source of truth and a relay only syncs encrypted copies, and why it is not the same as offline mode. He then walks through Trezor's use of the Evolu library: deriving the owner ID, write key and encryption key from the wallet seed using SLIP-21, resolving conflicts with hybrid clocks in CRDT message envelopes, limiting relay abuse with a quota manager that checks the hardware wallet, and padding data so the relay sees little beyond owner ID hashes and timestamps. Keynote at ETHSofia 2026, 24 September 2026, Sofia Tech Park, Sofia. Part of Blockchain Week Bulgaria 2026. Speaker ▸ Matěj Husák, Tech Lead, Networks Team, Trezor Self-taught full-stack engineer, TypeScript/React/Node, built across several startups and web3 projects, interested in P2P protocols Chapters 00:00 Not your keys, not your data 01:06 Security versus privacy 02:38 What local-first means 04:11 Local-first is not offline mode 05:43 Three problems: encryption, sync and abuse 07:46 Choosing the Evolu library 08:44 Deriving keys from the seed with SLIP-21 10:02 Conflict-free sync with hybrid clocks 11:16 Default relays and device-authorised quotas 12:06 Threat model: what the relay can see 12:43 UX without passwords 13:50 Q&A: Real-world applications 14:54 Closing titles Blockchain Week Bulgaria: https://www.blockchainweek.bg ETHSofia: https://www.ethsofia.com Future Finance Forum: https://www.blockchainweek.bg/f3 Follow Blockchain Week Bulgaria X: https://x.com/BWBulgaria LinkedIn: https://www.linkedin.com/company/blockchain-week-bulgaria Follow ETHSofia X: https://x.com/EthSofiaBG LinkedIn: https://www.linkedin.com/company/ethsofia Telegram: https://t.me/+b-33LJUpAB5iODNk Nothing in this video is financial advice. About the organiser Blockchain Week Bulgaria, ETHSofia and the Future Finance Forum are organised by the Bithope Foundation, founded in 2014 by Vladislav Dramaliev. Inspired by Andreas Antonopoulos, it is Europe's first non-profit operating exclusively with bitcoin donations. Over more than ten years, it has supported 50+ charitable campaigns, and in January 2016 it co-founded the Sofia Crypto Meetup, now the region's longest-running monthly crypto event. https://bithope.org

Kartik Talwar

ETHGlobal · Oct 9, 2025

Join Kartik Talwar and Erik Voorhees, founder of Venice AI (and formerly of ShapeShift), in this fireside chat at the Agentic Ethereum 2025 Summit. Explore how private AI works, why uncensored AI is essential for user freedom, and how principles from crypto and decentralization drive Venice’s mission. Discover how Venice AI preserves privacy by never storing conversations, integrates token-based payments for AI agents, and offers freedom from the censorship and data-collection practices of centralized providers. If you’re curious about secure GPU provisioning, crypto-based subscriptions, and the future of autonomous AI applications, don’t miss Erik’s insights on building a truly private and free-speech AI ecosystem. Like, share, and subscribe for more in-depth discussions on agentic governance, decentralized tech, and the evolution of AI in a Web3 world! 00:00 Introduction: Erik Voorhees & Venice AI 00:45 Origins of Private AI and Venice's Mission 02:00 Concerns Over Centralized AI and Censorship 03:49 Why Privacy and User Freedom Matter 05:25 Removing Data Collection and Storing No Chats 06:34 Venice vs. Other AI Providers 08:08 ChatGPT’s Limitations & Guardrails 09:59 Balancing Uncensored AI with User Responsibility 11:05 Philosophical View on Speech & Actions 15:20 Comparing Venice With Other Emerging AI Solutions 18:21 The Importance of Crypto Payments & GPU Decentralization 21:09 Venice Token Launch & API for AI Agents 24:17 Characters and Agentic AI in Venice 27:02 Future Roadmap: Moving Toward Autonomous Agents 28:39 Closing Thoughts and Next Steps for Venice AI _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 🤖 *Agentic Ethereum 2025 Summit* Join the official Agentic Ethereum 2025 Summit for an in-depth look at AI agents, smart contracts, and how they converge to power the next era of decentralized intelligence. This is more than just a summit—it's a gathering of the brightest minds in our ecosystem, and we're honored to have Andrew Miller, Anna Kazlauskas, Davide Crapis, dcbuilder, Ed Felten, Erik Voorhees, Illia Polosukhin, Jasper Zhang, Karl Floersch, Ken Ng, Kevin Owocki, Linda Xie, Shaw, Tomasz Stanczak, Chase Allred and Vitalik Buterin and on stage for this virtual summit focused around AI Agents and Blockchain! Watch the full Agentic Ethereum 2025 Summit Playlist here: https://youtube.com/playlist?list=PLXzKMXK2aHh6DrYO4ORk8wzQ5wCZDs0mW&si=ARqB9gaXAqehWH1_ 🤖 *Agentic Ethereum 2025* Agentic Ethereum is an online, async hackathon that runs from Jan. 31 to Feb. 12, 2025. With over $175,000 USD in prizes, Agentic Ethereum is a great way to dive into the world of autonomous AI agents and explore how they can revolutionize projects on Ethereum. Start the year with groundbreaking innovation! Watch the full playlist: https://youtube.com/playlist?list=PLXzKMXK2aHh7jxP_flgRf5nZ_WDgFpBy3&si=RZozbd9C5KrG6Bf3 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ ✅ Follow Erik Voohrees X: https://x.com/ErikVoorhees ✅ Follow Venice AI Website: https://venice.ai ✅ Follow Kartik Talwar X: https://x.com/therealkartik Warpcast: https://warpcast.com/kartik ✅ Follow ETHGlobal X: https://x.com/ETHGlobal​ Warpcast: https://warpcast.com/ethglobal Website: https://ethglobal.com YouTube: https://www.youtube.com/c/ETHGlobal _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Are you interested in Ethereum development and entrepreneurship? 👉 Sign up for the next ETHGlobal event: https://ethglobal.com/events 🎁 Get exclusive access and perks with ETHGlobal Plus! https://ethglobal.com/plus 📣 Want us to throw an event in your city? Tell us where! https://ethglobal.com/city _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

Illia Polosukhin

ETHGlobal · Oct 9, 2025

Join Ed Felten (Offchain Labs) and Illia Polosukhin (NEAR) at the Agentic Ethereum 2025 Summit as they dive into the intersection of AI and blockchain. Discover how verifiable compute, TEEs, rollups, and WASM-based smart contracts are empowering new on-chain AI services. Learn how developers can orchestrate complex AI inference through asynchronous message passing, ensure liveness, and harness decentralized infrastructure to scale AI-driven dApps. This thought-provoking panel led by ETHGlobal founder Kartik Talwar highlights real-world use cases—from AI-based DeFi automation and verifiable oracles to on-chain governance and “AI presidents.” If you’re curious about bridging the gap between AI and crypto, this session covers fundamental research insights, next-gen developer tooling, and how emerging solutions like zero-knowledge proofs might reshape distributed AI. 00:00 Intro: AI & Blockchain Intersection 00:44 Research & Practical Blockchain Applications 02:24 Decentralization & Power Structures 05:56 AI Community vs. Crypto Community Mindsets 08:16 Ensuring Liveness with Secure Enclaves 10:01 Rollups & EVM Upgrades for AI 12:42 WASM & Asynchronous Execution 15:22 Handling Complex AI Inference On-Chain 19:08 Practical Limits & Resource Constraints 22:12 Advice for Developers (Latency & MEV) 25:59 Assistant Agents & On-Chain Agents 30:55 Privacy, Verifiability & ZK Challenges 37:03 Real-World AI+Crypto Applications 41:29 AI in Governance & Future Outlook 42:09 Conclusion & Final Thoughts _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 🤖 *Agentic Ethereum 2025 Summit* Join the official Agentic Ethereum 2025 Summit for an in-depth look at AI agents, smart contracts, and how they converge to power the next era of decentralized intelligence. This is more than just a summit—it's a gathering of the brightest minds in our ecosystem, and we're honored to have Andrew Miller, Anna Kazlauskas, Davide Crapis, dcbuilder, Ed Felten, Erik Voorhees, Illia Polosukhin, Jasper Zhang, Karl Floersch, Ken Ng, Kevin Owocki, Linda Xie, Shaw, Tomasz Stanczak, Chase Allred and Vitalik Buterin and on stage for this virtual summit focused around AI Agents and Blockchain! Watch the full Agentic Ethereum 2025 Summit Playlist here: https://youtube.com/playlist?list=PLXzKMXK2aHh6DrYO4ORk8wzQ5wCZDs0mW&si=ARqB9gaXAqehWH1_ 🤖 *Agentic Ethereum 2025* Agentic Ethereum is an online, async hackathon that runs from Jan. 31 to Feb. 12, 2025. With over $175,000 USD in prizes, Agentic Ethereum is a great way to dive into the world of autonomous AI agents and explore how they can revolutionize projects on Ethereum. Start the year with groundbreaking innovation! Watch the full playlist: https://youtube.com/playlist?list=PLXzKMXK2aHh7jxP_flgRf5nZ_WDgFpBy3&si=RZozbd9C5KrG6Bf3 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ ✅ Follow Ed Felton & Offchain Labs X: https://x.com/EdFelten X: https://x.com/OffchainLabs ✅ Follow Illia Polosukhin & Near Protocol X: https://x.com/ilblackdragon X: https://x.com/NEARProtocol ✅ Follow Kartik Talwar X: https://x.com/therealkartik Warpcast: https://warpcast.com/kartik ✅ Follow ETHGlobal X: https://x.com/ETHGlobal​ Warpcast: https://warpcast.com/ethglobal Website: https://ethglobal.com YouTube: https://www.youtube.com/c/ETHGlobal _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Are you interested in Ethereum development and entrepreneurship? 👉 Sign up for the next ETHGlobal event: https://ethglobal.com/events 🎁 Get exclusive access and perks with ETHGlobal Plus! https://ethglobal.com/plus 📣 Want us to throw an event in your city? Tell us where! https://ethglobal.com/city _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

Marek Olszewski

ETHGlobal · Oct 9, 2025

Join Marek Olszewski at Pragma Denver 2025 as he unveils Self Protocol, a new identity and verification solution leveraging machine-readable biometric passports, zero-knowledge proofs, and Celo’s emerging Layer-2 architecture. Learn how Self Protocol addresses critical crypto challenges—like Sybil resistance, verifying you’re not on an OFAC list, and even confirming you’re human—without exposing private data. Marek demonstrates the mobile onboarding experience, explains the trusted execution environment (TEE) for secure proofs, and shows how developers can integrate Self Protocol’s SDK for dApps requiring age checks, region blocks, or other identity-based logic. If you’re searching for privacy-preserving identity solutions in Web3, this talk has you covered. 00:00 Introduction & What Is Self Protocol 00:49 Launch Day & Interactive “Guess the Country” Game 01:21 Key Unsolved Crypto Problems: Identity & Privacy 02:41 Addressing Sybil Resistance & Bad Actors 03:17 Rise of AI Agents: “Are You Even Human?” 04:21 Vision for Self Protocol & ZK-Based Verification 05:01 Biometric Passports & Machine-Readable Chips 07:04 Zero-Knowledge Proofs: No Counterparty Needed 09:04 Demonstrating the Mobile App Onboarding 10:30 Passport Scanning & Proof Generation Flow 11:04 Example Use Cases: Age Check, OFAC Check, More 12:27 Trusted Execution Environment (TEE) Explained 13:35 Deployment on Celo & Gas-Free Submissions 14:47 Self Protocol SDK for Builders & Custom Use Cases 15:22 Fun Implementations & Closing Remarks _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 🇺🇸 *Pragma Denver* Pragma Denver 2025 was held on February 25th at ReelWorks in Denver, Colorado and was an in-person summit for builders and leaders in the web3 ecosystem. Watch the full Pragma Denver YouTube Playlist here: https://youtube.com/playlist?list=PLXzKMXK2aHh6mvMfVn2gIK2uhRiTHjIg9&si=Xyozrbw0ZvUW_65a ETHGlobal's Pragma series takes place in cities around the world, and is designed to be a different kind of event. Pragma is a one-stage conference with founders-only on stage, bringing together a small group of curated attendees and speakers to discuss the future of web3 and reflect on the past. _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ ✅ *Follow Marek Olszewski* X: https://x.com/marek_ ✅ *Follow Celo* X: https://x.com/Celo ✅ *Follow ETHGlobal* X: https://x.com/ETHGlobal​ Warpcast: https://warpcast.com/ethglobal Website: https://ethglobal.com YouTube: https://www.youtube.com/c/ETHGlobal _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _Are you interested in Ethereum development and entrepreneurship?_ 👉 Sign up for the next ETHGlobal event: https://ethglobal.com/events 🎁 Get exclusive access and perks with ETHGlobal Plus! https://ethglobal.com/plus 📣 Want us to throw an event in your city? Tell us where! https://ethglobal.com/city _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

Illia Polosukhin, Kartik Talwar

ETHGlobal · Oct 9, 2025

In this fireside chat at Pragma Cannes 2025, Kartik Talwar and Illia Polosukhin (Near Protocol) explore the intersection of crypto and AI, focusing on decentralization, privacy, and autonomous agents. They discuss how AI can simplify user experiences in crypto, enabling intent-based actions and predictive interfaces. Key challenges include reliability, data privacy, trust, and sovereignty, especially when AI models are controlled by centralized entities. Illia highlights advances in confidential computing (Nvidia Hopper, Intel TDX) that enable secure, verifiable AI computation with minimal overhead, paving the way for decentralized, unstoppable autonomous agents. They delve into integrating AI agents with blockchain via secure enclaves, programmable encryption (chain signatures), and intent-based smart contracts for payments and work. The conversation covers agent communication protocols (AITP), the evolution of user interfaces towards AI-driven, just-in-time experiences, and the broader vision of merging web3 and AI for secure, user-centric applications. 00:00 Introduction 00:46 Overlap of Crypto and AI 01:51 AI-Driven User Experiences 03:09 Reliability and Trust Issues in AI 04:08 Sovereignty and Centralization Risks 05:18 Blockchain Solutions for AI Challenges 06:28 Confidential Computing Advances 07:36 Integrating AI with Blockchain 08:31 Autonomous Agents and Decentralized Cloud 10:07 Legal Contracts, Payments, and Real-World Integration 11:21 Blockchain Network Evolution 12:39 Confidential Compute and Data Privacy 13:31 Programmable Encryption and Chain Signatures 14:38 Personal Memory Boxes and Secure AI Models 15:07 Intents for Payments and Contracts 16:46 Building AI Agents: Near vs. General SDKs 17:44 Agent Communication Protocols (AITP) 18:45 The Future of Interfaces: AI-Driven Experiences 19:44 Closing Remarks _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 🇫🇷 *Pragma Cannes* Pragma Cannes 2025 was held on July 3rd at the Carlton Cannes in Cannes, France and was an in-person summit for builders and leaders in the web3 ecosystem. Watch the full Pragma Cannes YouTube Playlist here: https://www.youtube.com/playlist?list=PLXzKMXK2aHh6jZYPY5-YIBzvMtUT3ajjI ETHGlobal's Pragma series takes place in cities around the world, and is designed to be a different kind of event. Pragma is a one-stage conference with founders-only on stage, bringing together a small group of curated attendees and speakers to discuss the future of web3 and reflect on the past. _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ ✅ Follow Illia Polosukhin X: https://x.com/ilblackdragon ✅ Follow NEAR X: https://x.com/NEARProtocol ✅ Follow ETHGlobal X: https://x.com/ETHGlobal​ Warpcast: https://warpcast.com/ethglobal Website: https://ethglobal.com YouTube: https://www.youtube.com/@UCfF9ZO8Ug4xk_AJd4aeT5HA _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Are you interested in Ethereum development and entrepreneurship? 👉 Sign up for the next ETHGlobal event: https://ethglobal.com/events 🎁 Get exclusive access and perks with ETHGlobal Plus! https://ethglobal.com/plus 📣 Want us to throw an event in your city? Tell us where! https://ethglobal.com/city _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

ETHGlobal · Oct 9, 2025

Nik Erzetic’s Flare Workshop demonstrates how to bring any Web2 API data on-chain using the Flare Data Connector (FDC). The session covers the FDC workflow: creating attestation requests, using verifier servers, submitting requests to the FDC hub contract, validator data retrieval, JQ filtering, Solidity struct encoding, and Merkle proof verification. Nik walks through the Flare Hardhat Starter repository, showing how to adapt example contracts and scripts for custom projects. He explains modifying URLs, JQ filters, and AI signatures for different data sources, and highlights a weather insurance DApp example. The Q&A addresses proof structure (not zk-proof, but Merkle-based), handling sensitive API keys (not private after attestation), and further resources on the Flare Developer Hub. The workshop emphasizes decentralized data attestation, smart contract integration, and practical steps for developers to connect Web2 data to the Flare blockchain. 00:00 Introduction 01:14 Flare Developer Hub Overview 01:43 FDC User Workflow Explained 05:05 Flare Hardhat Starter Repository 06:36 Example Contract and Script Walkthrough 10:06 JQ Filter and Data Processing 13:02 Solidity Struct (AI Signature) Explanation 15:33 Modifying the Starter Project 18:04 Q&A: Proof Structure 20:07 Q&A: API Keys and Data Privacy 21:11 Q&A: Weather Insurance Example 24:59 Additional Resources and Closing _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 🇫🇷 *ETHGlobal Cannes* This workshop is specifically for ETHGlobal Cannes, a 3-day hackathon held July 4-6, bringing together the most skilled web3 developers, designers and product builders from all around the globe for a weekend-long adventure to advance the Ethereum ecosystem! Watch the full ETHGlobal Cannes 2025 playlist here: https://youtube.com/playlist?list=PLXzKMXK2aHh5N2DCwhcEshNW9C8knZ1T-&si=Lc-WOyfkAVP2--R4 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ ✅ *Follow Flare* X: https://x.com/FlareNetworks ✅ *Follow ETHGlobal* X: https://x.com/ETHGlobal​ Warpcast: https://warpcast.com/ethglobal Website: https://ethglobal.com YouTube: https://www.youtube.com/c/ETHGlobal _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _Are you interested in Ethereum development and entrepreneurship?_ 👉 Sign up for the next ETHGlobal event: https://ethglobal.com/events 🎁 Get exclusive access and perks with ETHGlobal Plus! https://ethglobal.com/plus 📣 Want us to throw an event in your city? Tell us where! https://ethglobal.com/city _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

Swarm · Jun 20, 2024

Within decentralized public data storage systems like Swarm, where data resides across multiple nodes, ensuring confidentiality, integrity, and availability becomes paramount. The Access Control Trie (ACT) is a data structure that stores access control information for Swarm nodes. It is used to determine whether a node has permission to access a particular resource. The video discusses the application of Web 3 technology to ensure user control over data privacy and access. The speaker explains how their implemented feature, access control trie (ACT), within the Swarm platform allows content publishers to grant or revoke access to specific wallets, ensuring that only authorized users can view or decrypt content. This system aims to address common Web 2 issues such as centralization, data mishandling, security breaches, and censorship. The ACT feature is detailed in terms of its technical implementation within Swarm and its potential use cases, including gated community content, private group chats, confidential data sharing, and monetization opportunities for content creators in Web 3. A live demo showcases how a publisher can grant access to a member wallet so they can view JSON data, potentially representing NFT metadata. The talk also touches on a partnership with Galaxy XYZ, a platform creating Web 3 communities that will use Swarm for self-serving control over data. Questions from the audience cover technical aspects of ACTs, such as EVM compatibility and visibility of granted permissions. The response emphasizes the security design where access information does not leak outside intended parties. The summary is for users interested in decentralized storage solutions, privacy control in Web 3 applications, and the technical mechanisms enabling secure data sharing within blockchain ecosystems.

Ethereum Denver · Oct 9, 2022

In this video, Evin McMullen dives into the fascinating world of web3 and explore the concept of the metaverse. We examine a crucial trade-off that exists within web 3: data privacy versus material gain. The speaker highlights the significance of autonomy and consent in this digital landscape, shedding light on how these principles shape our online experiences. Furthermore, we dive into the intriguing realm of NFTs (non-fungible tokens) and their role in establishing identity within web 3. Discover how NFTs are revolutionizing the way we perceive ownership and authenticity in a virtual environment. Join us as we unravel the complexities surrounding web 3 and its impact on our lives. Gain insights into key aspects such as data privacy, material gain, autonomy, consent, and NFTs. Stay tuned for an enlightening discussion that will challenge your perspectives on the future of technology. #Web3 #Metaverse #buidl TLDR: The key idea of the video is that decentralized identity and verifiable credentials can enable a personalized metaverse experience while providing individuals with more control over their personal data and privacy. 00:00 🔑 The web 3 has yet to be fully built and embraced, but decentralized identity and verifiable credentials can enable a personalized metaverse experience. 01:15 🔑 Sacrificing privacy and consent in web 3 for convenience with NFTs as identity, which overshare personal data and lack proof. 03:02 🔒 Non-transferable NFTs in web3 compromise autonomy and can lead to unwanted associations, requiring users to pay gas fees and abandon transaction history to disassociate themselves. 04:34 🔑 You can't rotate private keys for decentralized identities without compromising security, and non-transferable NFTs can lead to fraudulent ownership claims, while also incurring costs. 05:30 📝 Decentralized identifiers (DIDs) enable individuals to own and control their off-chain private data, while allowing for the integration of web 2 and web 3 applications to create a verifiable reputation based on self-attestations and social attestations. 07:29 🔒 Verifiable credentials are like off-chain NFTs that can include various types of data, are non-transferable, tamper-evident, encrypted, revocable, and can be disclosed with consent, providing more control over sharing information compared to public blockchains, and they are independently verifiable by anyone with an internet connection. 09:02 💡 DIDs and VCs allow for private and fast communication between blockchain addresses and web 2 identifiers, enabling more meaningful coordination and collaboration beyond just financial information. 10:11 🔑 Verifiable credentials will revolutionize fan loyalty by allowing them to prove their allegiance to artists and receive exclusive benefits, eliminating paperwork and queues.