1.22 conference-2025 2025-09-12 2025-09-12 1 00:05 https://speak.ethtokyo.org https://speak.ethtokyo.org/media/conference-2025/img/ETHTokyoLogo_bXe5dwF.png Japan Plasma Stage Solo Talk 15min 2025-09-12T10:00:00+09:00 10:00 00:15 ETHTokyo is a vibrant conference and hackathon for the global Ethereum community, bringing together people from diverse backgrounds, ideas, and skills to share their love for Ethereum and the world it envisions. At this conference, industry leaders, developers, and passionate enthusiasts will gather for a full day of inspiring talks, panel discussions, and networking opportunities. Come and learn about the latest trends in Ethereum and blockchain technology. conference-2025-45-opening-remark /media/conference-2025/submissions/UGXGBU/1_1_ye7Ia1Y.jpg irohas.ethToshi KameiMai FujimotoSeiya ja-jp Theme for 2025: Liberating Technologies for the Future of Humanity Liberation begins in the heart. Let us rethink from the ground up how technology can empower people, preserve cultures, and build a sustainable future in ways that are impossible today. The goal is not innovation for its own sake, but to reimagine and redefine the constraints of our constructed realities, envisioning new methods and better approaches to how we live and create. false https://speak.ethtokyo.org/conference-2025/talk/UGXGBU/ https://speak.ethtokyo.org/conference-2025/talk/UGXGBU/feedback/ Plasma Stage Solo Talk 20min 2025-09-12T10:15:00+09:00 10:15 00:20 Indistinguishability obfuscation (iO) has been seen as the "holy grail" of cryptography, yet it remains far from practical due to the high complexity and inefficiency of existing constructions. In this talk, we will share the current status and challenges of our partial iO implementation and outline our roadmap toward practical iO. We will also show how iO could transform Ethereum into a global platform for privacy-preserving computation, opening the ecosystem to entirely new classes of users. conference-2025-26-our-roadmap-to-practical-io Cypherpunks Anonymous /media/conference-2025/submissions/W3QPVB/Green_Geometric_Professional_Entrepreneur_Technology__MwhWecw.jpg Sora Suegami en Indistinguishability obfuscation (iO) has been seen as the "holy grail" of cryptography, turning a program into an “unintelligible” one that hides its internal secrets while preserving its functionality. However, it remains far from practical due to the high complexity and inefficiency of existing constructions. To bring iO from theory to practice, our project, Machina iO, has proposed a new lattice-based iO construction, Diamond iO, and has released its partial implementation. In this talk, we will share current benchmarks and remaining challenges for the construction and its implementation, along with our roadmap for addressing them. In the long term, we believe that combining Ethereum with iO can make privacy scalable—that is, maintain strong privacy guarantees even as the volume and value of private data grow—thereby unlocking entirely new segments of users for the Ethereum ecosystem. false https://speak.ethtokyo.org/conference-2025/talk/W3QPVB/ https://speak.ethtokyo.org/conference-2025/talk/W3QPVB/feedback/ Plasma Stage Panel discussion 2025-09-12T10:40:00+09:00 10:40 00:30 Rollups play a crucial role in Ethereum’s scaling, but while they have rapidly diversified, they also face the challenge of ecosystem fragmentation. This session will explore two key approaches—shared sequencers and base rollups—clarifying their respective goals and differences. We will further discuss major challenges such as incentive alignment for rollup operators and the overall coherence of the ecosystem, examining how these issues might be solved and whether the costs of doing so are just conference-2025-38-can-l2s-become-one-what-shared-sequencers-and-base-rollups-can-achieve-l2 Cypherpunks Anonymous /media/conference-2025/submissions/FSJBPA/2025-09-10_01.05.41_vlMnbwF.jpg Charles LuManbirvita en We will further discuss major challenges such as incentive alignment for rollup operators and the overall coherence of the ecosystem, examining how these issues might be solved and whether the costs of doing so are justified by the benefits. Ultimately, this session will ask whether the future of L2s lies in convergence into “one” or in continued evolution while preserving diversity, offering critical insights into the direction of Ethereum’s scaling. false https://speak.ethtokyo.org/conference-2025/talk/FSJBPA/ https://speak.ethtokyo.org/conference-2025/talk/FSJBPA/feedback/ Plasma Stage Solo Talk 15min 2025-09-12T11:15:00+09:00 11:15 00:15 lean Consensus(旧Beam Chain)では、現在のBLS署名からハッシュベース署名への刷新が計画されています。耐量子暗号であるハッシュベース署名の基本から最新論文手法の内容まで技術的に深掘りします。 conference-2025-44 Cypherpunks Anonymous /media/conference-2025/submissions/KCU7HW/2025-09-10_01.38.44_Kedfv6M.jpg banri ja-jp 2025年現在のイーサリアムではコンセンサス層でBLS署名が使われており、離散対数問題に依拠した楕円曲線ベースの署名となっています。しかし、これらの署名スキームは量子コンピュータに破られるアルゴリズムが存在することが知られています。lean Ethereum構想の一つであるlean Consensus(旧Beam Chain)の大きな目的の一つは、Ethereumのコンセンサス層の署名技術を耐量子性を伴った署名技術に置き換えることです。ここでは、現時点で最有力候補となっている署名スキームであるハッシュベース署名XMSSとそこで用いられるエンコーディング手法について話します。 アジェンダ 1. lean Consensusとは？ 2. ハッシュベース署名 3. エンコーディング手法 4. 我々の取り組み: 形式検証 false https://speak.ethtokyo.org/conference-2025/talk/KCU7HW/ https://speak.ethtokyo.org/conference-2025/talk/KCU7HW/feedback/ Plasma Stage Solo Talk 15min 2025-09-12T11:30:00+09:00 11:30 00:15 Cryptography can’t tell us what is “good,” but it can provide verifiable ground truth about AI systems. Using tools like formal verification, zero-knowledge proofs, and verifiable computation, we can prove claims about what model ran, what guardrails executed, and how safety checks were enforced. This talk explores how cryptography can’t solve ethics, but can make AI behavior falsifiable, auditable, and accountable. conference-2025-47-crypto-for-ai-safety-verifying-is-not-deciding-ought Actual Intelligence /media/conference-2025/submissions/KUPG33/Green_Geometric_Professional_Entrepreneur_Technology__r60J40x.jpg ventali en What does it mean for AI to be “safe”? Philosophy has wrestled with the problem of defining what is good or just for thousands of years, and cryptography cannot resolve that normative debate. But while it cannot decide ought, cryptography can help us establish reliable evidence about what AI systems did. This talk explores how formal verification and cryptographic proofs can contribute to AI safety and interpretability. Formal verification can encode invariants and check that safety-critical guardrails or filters behave as specified. Zero-knowledge proofs and verifiable computation can ensure that an AI used the approved model version, applied required safety checks, and followed specified constraints—without exposing private data or proprietary model weights. Proof-carrying execution, enabled by recursive proofs, extends these guarantees to multi-step agents, letting us audit entire chains of reasoning or action. The result is a “cryptographic safety wrapper”: a verifiable layer around AI systems that does not define moral truth, but that can make safety claims falsifiable, enforceable, and auditable. Drawing on Terence Tao’s ideas on machine-assisted proof, the talk argues that while philosophy continues to grapple with values, cryptography offers us a way to build shared ground truth about AI behavior—bridging the gap between ethics and engineering. false https://speak.ethtokyo.org/conference-2025/talk/KUPG33/ https://speak.ethtokyo.org/conference-2025/talk/KUPG33/feedback/ Plasma Stage Panel discussion 2025-09-12T11:50:00+09:00 11:50 00:30 High-speed EVM rollups prioritize performance and compatibility, but inevitably inherit the constraints of DA. Stateless approaches, by separating execution from state management, open up new possibilities, yet many open challenges remain. conference-2025-34-curing-the-rollup-ecosystem-s-da-addiction-high-speed-evm-vs-statelessness Cypherpunks Anonymous /media/conference-2025/submissions/DZG7CC/2025-09-10_01.04.04_y3nwp4r.jpg Leona HiokiPatrick McCorryJack Saracco en This session will compare these two distinct directions—high-speed EVM and stateless rollups—highlighting their respective strengths and limitations, while jointly exploring where “true scalability” may lie. false https://speak.ethtokyo.org/conference-2025/talk/DZG7CC/ https://speak.ethtokyo.org/conference-2025/talk/DZG7CC/feedback/ Plasma Stage Sponsor Talk 5min 2025-09-12T12:20:00+09:00 12:20 00:05 Founded by Bybit in 2024, the Blockchain for Good Alliance (BGA) is a global coalition of innovators, enterprises, and institutions committed to advancing public goods and social impact through blockchain. In this session, we introduce BGA’s vision, highlight our impact-driven initiatives, and share how we foster collaboration across sectors to unlock blockchain’s potential for systemic change. conference-2025-75-sponsored-session-blockchain-for-good-alliance Mickey Amami en The BGA was founded with a singular mission: to harness the transformative power of blockchain technology to accelerate progress toward a better world and solve critical real-world problems. As the world’s largest multi-stakeholder network dedicated to “blockchain for good,” BGA brings together startups, corporates, development agencies, policymakers, and thought leaders under one collective banner. Our work spans global hackathons, accelerators, joint funds, and a global convention that directly address real-world challenges. In this session, Mickey, a member of the BGA Board of Advisors, will provide an introduction to the Alliance; its vision, structure, and impact. She will highlight the unique role BGA plays in bridging Web3 innovation with development needs on the ground, and in fostering dialogue between public and private sectors. false https://speak.ethtokyo.org/conference-2025/talk/PVSSMR/ https://speak.ethtokyo.org/conference-2025/talk/PVSSMR/feedback/ Plasma Stage Sponsor Talk 5min 2025-09-12T12:20:00+09:00 12:20 00:05 約1,950本のレポートを配信している「HashHub Research」の使い方とサービスのご紹介。 conference-2025-79-sponsored-session-hashhub /media/conference-2025/submissions/9WFCCN/hashhub_logo_black_L9QQO8N.png 石塚雅之 ja-jp 株式会社HashHubは「パブリックブロックチェーンの恩恵をより多くの人へ」というミッションのもと、2018年に創業。 リサーチレポート配信サービス「HashHub Research」、暗号資産レンディングサービスの「HashHub Lending」を展開。 2023年にSBIグループへ参画し、より洗練されたサービスのご提供を目指しております。 false https://speak.ethtokyo.org/conference-2025/talk/9WFCCN/ https://speak.ethtokyo.org/conference-2025/talk/9WFCCN/feedback/ Plasma Stage Sponsor Talk 5min 2025-09-12T12:25:00+09:00 12:25 00:05 # Beyond Speculation: Bridging Ethereum with Societal Trust Systems thereum is often perceived primarily as a speculative tool. Yet its true potential lies in becoming the coordination layer for public goods and everyday life. This talk explores how Ethereum can move beyond speculation by integrating with societal trust systems — national-scale digital identity infrastructures that provide reliable verification and inclusivity. By connecting Ethereum’s trustless architecture with existing tru conference-2025-72-sponsored-session-mynawallet /media/conference-2025/submissions/SNZ98M/logo_w_chara_mtgWlna.png Hiroyuki Tachibana ja-jp The mainstream narrative around Ethereum has long been dominated by trading, speculation, and volatility. But Ethereum’s original vision — to serve as a foundation for human coordination and public goods — is far more ambitious. To realize this vision, we need to bridge Ethereum’s trustless protocols with the trusted societal infrastructures that billions of people already depend on. This session presents a perspective from Japan, where a nationwide digital ID card is issued to every citizen. By linking such societal trust systems with Ethereum, we can lower onboarding friction, expand stablecoin adoption, and enable real-world applications: * Public goods distribution: delivering benefits and subsidies directly, instantly, and transparently. * Everyday usability: touch-to-pay experiences backed by stablecoins, rather than volatile assets. * Mass adoption: providing a secure, regulated entry point for millions who currently see crypto as only speculative. By combining Ethereum’s global neutrality with local trust anchors, we can move toward an ecosystem where speculation is no longer the primary story — instead, Ethereum becomes the invisible infrastructure for social and economic coordination. false https://speak.ethtokyo.org/conference-2025/talk/SNZ98M/ https://speak.ethtokyo.org/conference-2025/talk/SNZ98M/feedback/ Plasma Stage Sponsor Talk 5min 2025-09-12T12:30:00+09:00 12:30 00:05 Overview of Bitbank ビットバンクの概要説明 conference-2025-71-sponsored-session-bitbank 桑原惇 ja-jp Bitbank operates a highly secure, transparent crypto-asset exchange registered with the Kanto Local Finance Bureau (No. 00004). Its services span spot trading, instant buy and sell, lending, and margin trading, with strong emphasis on compliance and third-party audits. The company is expanding into digital asset custody through Japan Digital Asset Trust Preparatory Company in partnership with Sumitomo Mitsui Trust Group. Bitbank Ventures serves as a corporate venture capital arm, accelerating decision-making and providing value-added services such as market entry support, and partner introductions, positioning Bitbank as a key bridge between Japan and the global crypto ecosystem. ビットバンクは、関東財務局長登録（第00004号）の暗号資産交換業者として、現物取引、販売所、レンディング、信用取引など幅広いサービスを展開し、高い透明性と第三者監査により安全な取引環境を提供しています。三井住友トラストグループと共同で日本デジタルアセットトラスト設立準備株式会社を通じて、デジタルアセットのカストディ事業にも参入予定です。さらにCVC「Bitbank Ventures」を通じて、迅速な投資意思決定、事業化検討、国内外パートナー紹介、参入支援といった付加価値を提供し、日本と世界の暗号資産・ブロックチェーンエコシステムをつなぐ架け橋となることを目指しています。 false https://speak.ethtokyo.org/conference-2025/talk/9K7PML/ https://speak.ethtokyo.org/conference-2025/talk/9K7PML/feedback/ Plasma Stage Sponsor Talk 5min 2025-09-12T12:35:00+09:00 12:35 00:05 上場会社クシムのご紹介と暗号資産トレジャリー戦略の今後について当社クシム（東証2345）の代表の田原と申します。 私はもともとSolidityエンジニアとしても働いていた経験もあり、弊社のメンバーもほとんどが何かしらEthereumに関する業務経験のあるメンバーです。 そんな当社のご紹介と、現在話題になっている暗号資産トレジャリー戦略について、上場会社経営者から見た利点と限界、そして当社としての方針について簡単にお話します。 conference-2025-70-sponsored-session 田原弘貴(Tahara Hiroki) ja-jp 当社クシムはもともと暗号資産取引所のZaifとブロックチェーン開発企業のTuringumという会社を有するブロックチェーン領域に特化した上場会社でした。現在はその事業すべてを喪失し（事業子会社については法的闘争中）、当社に所属する少数のブロックチェーンエンジニアを中心としたゼロからの事業再構築を行っています。 そんな会社を経営する立場から、暗号資産トレジャリー戦略についての意見や考え方をお話できればと思います。 false 株式会社クシム会社紹介資料 https://speak.ethtokyo.org/conference-2025/talk/B9LPEM/ https://speak.ethtokyo.org/conference-2025/talk/B9LPEM/feedback/ Plasma Stage Sponsor Talk 5min 2025-09-12T12:45:00+09:00 12:45 00:05 Intro to Ethereum Name Service (ENS) conference-2025-73-sponsored-session-ens /media/conference-2025/submissions/YZDAJG/Design_ohne_Titel_63_dHTQtTo.png Mely.eth en This talk provides an overview of the ENS protocol and the many ways to integrate it. false https://speak.ethtokyo.org/conference-2025/talk/YZDAJG/ https://speak.ethtokyo.org/conference-2025/talk/YZDAJG/feedback/ Plasma Stage Sponsor Talk 5min 2025-09-12T12:50:00+09:00 12:50 00:05 Japan Smart Chain is a Japan-born, fully Ethereum-compatible Layer 1 blockchain. It is validated by leaders of Japanese industry within Japan and is optimized for Japanese regulations and consumer protection. conference-2025-69-sponsored-session-japan-smart-chain Julia Szoradi en Japan Smart Chain is a Japan-born, fully Ethereum-compatible Layer 1 blockchain. It is validated by leaders of Japanese industry within Japan and is optimized for Japanese regulations and consumer protection. false https://speak.ethtokyo.org/conference-2025/talk/CSFFWK/ https://speak.ethtokyo.org/conference-2025/talk/CSFFWK/feedback/ Plasma Stage Panel discussion 2025-09-12T13:00:00+09:00 13:00 00:30 This session explores how Encumbered Wallets and Privacy Pools/Accountable Wallets can balance privacy protection and regulatory compliance. conference-2025-32-wallet-and-key-management-mechanism-design-toward-smart-privacy-enhancement Cypherpunks Anonymous Shin'ichiro MatsuoNoah JelichAki en We will discuss key management and selective disclosure mechanisms to identify new design directions for achieving both privacy and compliance. false https://speak.ethtokyo.org/conference-2025/talk/7QLXED/ https://speak.ethtokyo.org/conference-2025/talk/7QLXED/feedback/ Plasma Stage Panel discussion 2025-09-12T13:35:00+09:00 13:35 00:30 Privacy in DeFi - A New Value Proposition Showing concrete examples of deep-value use cases for privacy in DeFi conference-2025-9-no-privacy-no-crypto-pmf-of-privacy Cypherpunks Anonymous Alan ScottVaelyn LuoJosh Cowell en Privacy is needed for a myriad of reasons but we'll be breaking down simple examples of different use cases for Privacy being executed in today's ecosystem. false https://speak.ethtokyo.org/conference-2025/talk/SZQTCD/ https://speak.ethtokyo.org/conference-2025/talk/SZQTCD/feedback/ Plasma Stage Panel discussion 2025-09-12T14:10:00+09:00 14:10 00:30 As AI enters the world of hacking, security, privacy, developer experience, and even culture itself are undergoing profound changes. In this panel, white-hat hackers, AI researchers, and developers will come together to discuss a wide range of topics—from the frontlines of AI-driven attacks and defenses, to new methods of bug hunting, ecosystem-wide impacts, and pressing ethical questions. Attendees will walk away with both practical insights and forward-looking visions, gaining a comprehensive conference-2025-14-when-hackers-meet-ai Actual Intelligence /media/conference-2025/submissions/GKK9QA/2025-09-10_01.41.35_SutZVCA.jpg Deeptanshu SankhwarFrancesco Andreoligohan en test test test teste test false MCPChain Concept Prototype https://speak.ethtokyo.org/conference-2025/talk/GKK9QA/ https://speak.ethtokyo.org/conference-2025/talk/GKK9QA/feedback/ Plasma Stage Panel discussion 2025-09-12T14:45:00+09:00 14:45 00:30 Privacy has long been framed as a “cost of protection.” However, with the latest advances in cryptography and incentive design, protecting privacy is evolving into a mechanism for generating revenue. In this session, we will explore privacy mining, DataDAOs, and new yield models in DeFi, examining the intersection of privacy × profit. Attendees will gain insights into the future of privacy as a money-making product that users truly want. conference-2025-27-from-privacy-to-yield-generation Counterculture Capital /media/conference-2025/submissions/XUSRR8/2025-09-10_01.42.23_RjSYZMH.jpg Leona HiokiKyle KoshiyamaVictoriaMykola Siusko en Insert description false https://speak.ethtokyo.org/conference-2025/talk/XUSRR8/ https://speak.ethtokyo.org/conference-2025/talk/XUSRR8/feedback/ Plasma Stage Sponsor Talk 5min 2025-09-12T15:30:00+09:00 15:30 00:05 Curious about how to get started with elizaOS? This talk is your entry point. I’ll walk you through the key resources, tools, and community spaces designed to help you dive into the world of AI agents, whether you're just exploring or ready to start building. conference-2025-56-sponsored-session-elizaos Nisita Tappata en elizaOS is the most popular open-source operating system for building, deploying, and coordinating AI agents. It provides a modular framework, shared infrastructure, and a growing ecosystem of tools that make it easier for developers to experiment, collaborate, and launch agentic systems in the real world. false https://speak.ethtokyo.org/conference-2025/talk/9QSFTM/ https://speak.ethtokyo.org/conference-2025/talk/9QSFTM/feedback/ Plasma Stage Sponsor Talk 5min 2025-09-12T15:35:00+09:00 15:35 00:05 The “Bitcoin Moment” of AI In his talk, Gordon will explore why AI is at a pivotal turning point—similar to Bitcoin’s disruption of global finance. Today, AI is largely controlled by big tech, creating challenges around privacy, data ownership, and value distribution. Gordon will outline how decentralization, data privacy, and tokenized incentives can unlock a new paradigm for AI that is more open, secure, and community-driven. conference-2025-77-sponsored-session-bitseek Gordon Kwok en BitSeek is pioneering “atomized AI”—a framework that distributes computation across a global node network to ensure privacy, scalability, and resilience. By combining decentralized infrastructure with Web3 incentives, BitSeek empowers developers, contributors, and enterprises to build and deploy AI models without reliance on centralized providers. false https://speak.ethtokyo.org/conference-2025/talk/EAE98B/ https://speak.ethtokyo.org/conference-2025/talk/EAE98B/feedback/ Plasma Stage Sponsor Talk 5min 2025-09-12T15:40:00+09:00 15:40 00:05 How fixed-term lending can unlock trillions in DeFi Description: conference-2025-78-sponsored-session-stormbit Carlos Ramos en Stormbit is fixed-term lending infrastructure that enables anything as collateral ( from tokens, to nfts to web2 proofs ) false https://speak.ethtokyo.org/conference-2025/talk/QTYNWE/ https://speak.ethtokyo.org/conference-2025/talk/QTYNWE/feedback/ Plasma Stage Sponsor Talk 5min 2025-09-12T15:45:00+09:00 15:45 00:05 DeSci is changing how research is funded, shared, validated and commercialised using blockchain, open data, and new incentives. This 5-minute speedrun covers the problems in today’s system, the fixes DeSci offers, and where it’s heading—leaving you with a clear snapshot of the movement and what molecule.xyz, bio.xyz and pump.science are contributing to it! conference-2025-58-sponsored-session-desci-speedrun-with-bio-xyz-and-molecule-xyz /media/conference-2025/submissions/SV9PEG/twitter-image_EM61hIB.png Ivo Betke en Decentralized Science (DeSci) represents a socio-technological movement, building on technological and infrastructural advancements such as Distributed Ledger Technology (DLT), Web3, and Artificial Intelligence (AI). It fosters permissionless, open, and inclusive participation in scientific collaboration by enabling collective governance, equitable incentivization, unrestricted access, shared ownership, and transparent funding in scientific processes. In just 5 minutes, this talk will give a whirlwind tour of the problems in today’s scientific ecosystem and the solutions emerging from decentralized tools and communities. From tokenized funding to on-chain lab and patient data, we’ll explore how DeSci enables faster, more transparent, and more inclusive science. false Aubr.ai bio.xyz molecule.xyz pump.science https://speak.ethtokyo.org/conference-2025/talk/SV9PEG/ https://speak.ethtokyo.org/conference-2025/talk/SV9PEG/feedback/ Plasma Stage Solo Talk 15min 2025-09-12T15:55:00+09:00 15:55 00:15 EIP‑2926 introduces a novel chunk-based code merkleization design for Ethereum. Instead of proving the entire contract, bytecodes are split into fixed-size chunks and committed into a Merkle Patricia Trie (MPT). This approach significantly reduces witness sizes, lowers resource consumption for ZK-EVM provers, and decreases network bandwidth requirements for stateless clients. conference-2025-15-chunk-your-code-cut-the-cost-eip-2926-explained Cypherpunks Anonymous /media/conference-2025/submissions/AV7LEM/Green_Geometric_Professional_Entrepreneur_Technology__jtUkKWU.png Wei Han Ng en In this session, we dive into EIP‑2926’s chunk-based code merkleization, a transformative upgrade for Ethereum’s contract execution model. Instead of bundling full bytecode verification, EIP‑2926 breaks smart contracts into fixed-size chunks, commits them in a Merkle Patricia Trie, and stores a compact codeRoot in the contract account.  Attendees will discover: • Why this matters: Bytecode is currently one of the largest contributors to witness size. By introducing code chunking, Ethereum moves toward drastically leaner proofs suited for stateless clients and ZKEVM provers.  • How it works: Learn about the fixed-size chunking strategy (typically 31 bytes), the use of first-instruction offsets (FIO), and the Merkleization mechanics that support efficient and provable code access.  • Operational transition: The proposal details an upgrade path—including hard fork migration strategies—so that legacy contracts are incrementally converted without disruption.  • Performance gains and trade-offs: We’ll unpack how only executed chunks need to be loaded, dramatically cutting down on bandwidth and proof size. • Current status: Recently revived into the Glamsterdam workflow in mid‑2025, EIP‑2926 is gaining traction as essential infrastructure for future ZKEVM compatibility.  false https://speak.ethtokyo.org/conference-2025/talk/AV7LEM/ https://speak.ethtokyo.org/conference-2025/talk/AV7LEM/feedback/ Plasma Stage Keynote 2025-09-12T16:30:00+09:00 16:30 00:55 This special AMA session will feature Ethereum Founder Vitalik Buterin, President Aya, and members of the Ethereum Foundation Enterprise Team or Founder Success Team. The theme will be: “How can Japanese enterprises and society adopt and leverage Ethereum?” The session aims to provide not only developers, but also corporate product owners and business leaders, a rare opportunity to engage directly with key figures from the Ethereum ecosystem. conference-2025-1-ethereum-from-tech-to-real /media/conference-2025/submissions/FNKECQ/2025-09-10_01.13.52_CQSv5W0.jpg Yuki KamimotoYohei WakitaAya MiyaguchiAsh MorganAdrian LiVitalik Buterin en This session is part of the official ETHTokyo'25 program and is a joint initiative by N.Avenue, Web3 Business Hub, and ETHTokyo. false https://speak.ethtokyo.org/conference-2025/talk/FNKECQ/ https://speak.ethtokyo.org/conference-2025/talk/FNKECQ/feedback/ Plasma Stage Solo Talk 15min 2025-09-12T17:25:00+09:00 17:25 00:05 In this closing remark, we will reflect on the key insights and inspirations shared throughout ETHTokyo. Beyond the technical breakthroughs, we will highlight how the community came together to shape visions for Ethereum’s future. Closing with gratitude and a call to continue building, we aim to carry the spirit of ETHTokyo forward into the broader global ecosystem. conference-2025-46-closing-remark Yuta Kurotaki ja-jp In this closing remark, we will reflect on the key insights and inspirations shared throughout ETHTokyo. Beyond the technical breakthroughs, we will highlight how the community came together to shape visions for Ethereum’s future. Closing with gratitude and a call to continue building, we aim to carry the spirit of ETHTokyo forward into the broader global ecosystem. false https://speak.ethtokyo.org/conference-2025/talk/8FWXAB/ https://speak.ethtokyo.org/conference-2025/talk/8FWXAB/feedback/ Ethreactor Stage Panel discussion 2025-09-12T10:15:00+09:00 10:15 00:30 Ethereum’s growth has long depended on local communities, hackathons, and independent incubators. But these efforts are often fragmented, with limited collaboration across regions and domains. This panel brings together the founders of Ethreactor to discuss why Ethereum now needs a collective incubator DAO—a global network where incubators unite, share resources, and coordinate action. Together, we will explore how this model can amplify impact, create shared value, and ensure Ethereum’s future conference-2025-59-why-ethereum-needs-a-collective-of-incubators Actual Intelligence /media/conference-2025/submissions/VN8BUJ/%E3%82%B9%E3%82%AF%E3%83%AA%E3%83%BC%E3%83%B3%E3%82%B7%E3%83%A7%E3%83%83%E3%83%88_2025-09-12_12.24.43_sxLK9mD.png Ingi KimYudai SuzukiAdrian Li en Ethereum’s growth has long depended on local communities, hackathons, and independent incubators. But these efforts are often fragmented, with limited collaboration across regions and domains. This panel brings together the founders of Ethreactor to discuss why Ethereum now needs a collective incubator DAO—a global network where incubators unite, share resources, and coordinate action. Together, we will explore how this model can amplify impact, create shared value, and ensure Ethereum’s future is built by the ecosystem itself, not just by single organizations. false https://speak.ethtokyo.org/conference-2025/talk/VN8BUJ/ https://speak.ethtokyo.org/conference-2025/talk/VN8BUJ/feedback/ Ethreactor Stage Solo Talk 15min 2025-09-12T10:45:00+09:00 10:45 00:15 This talk presents EIP-7923, which introduces a sparse-page memory model with linear gas pricing—enabling up to 64MB memory per transaction. It modernizes EVM memory management while maintaining DoS resistance. conference-2025-74-scaling-ethereum-by-block-level-access-list-and-evm-compiler-with-experiments-on-geth Cypherpunks Anonymous /media/conference-2025/submissions/PHMZRL/%E3%82%B9%E3%82%AF%E3%83%AA%E3%83%BC%E3%83%B3%E3%82%B7%E3%83%A7%E3%83%83%E3%83%88_2025-09-12_12.25.08_Kms6K14.png Qi Zhou en The EVM’s current quadratic memory pricing limits smart contracts to about 3MB of usable memory per transaction, making it hard to support data-heavy use cases. In this talk, we introduce EIP-7923, which proposes a sparse-page-based memory model with linearized gas costs. This enables up to 64MB of memory per transaction and introduces modern memory features more in line with conventional computing systems. We’ll walk through the virtual memory design based on POSIX mmap, show how memory pages are lazily allocated, and demonstrate gas cost benchmarks based on real hardware. The new model enables advanced applications such as AI inference, high-throughput simulations, or large Merkle trees—while preserving security through a conservative 64MB cap and safe concurrent eth_call handling. This upgrade modernizes the EVM and expands its capability without compromising network stability. false https://speak.ethtokyo.org/conference-2025/talk/PHMZRL/ https://speak.ethtokyo.org/conference-2025/talk/PHMZRL/feedback/ Ethreactor Stage Solo Talk 20min 2025-09-12T11:00:00+09:00 11:00 00:20 Fusaka and Glamsterdam - what is coming to Ethereum conference-2025-60-fusaka-and-glamsterdam-what-is-coming-to-ethereum Actual Intelligence /media/conference-2025/submissions/JBDB9C/%E3%82%B9%E3%82%AF%E3%83%AA%E3%83%BC%E3%83%B3%E3%82%B7%E3%83%A7%E3%83%83%E3%83%88_2025-09-12_12.26.04_NZu5E14.png Tomasz K. Stańczak en * Fusaka timeline * Glamsterdam timeline * ACD gocernance process * ACDC, ACDE, ACDT * latest forkcast improvements * headliner candidates * EIPs that are already accepted * enterprise in the governance process * EIP process * decentralized coordination * mapping of EIPs to the three goals * recent blogposts on the three goals false https://speak.ethtokyo.org/conference-2025/talk/JBDB9C/ https://speak.ethtokyo.org/conference-2025/talk/JBDB9C/feedback/ Ethreactor Stage Panel discussion 2025-09-12T11:25:00+09:00 11:25 00:30 TBD conference-2025-65-on-chain-ip-neo-culture Cypherpunks Anonymous /media/conference-2025/submissions/3SUQCX/%E3%82%B9%E3%82%AF%E3%83%AA%E3%83%BC%E3%83%B3%E3%82%B7%E3%83%A7%E3%83%83%E3%83%88_2025-09-12_12.39.12_JNiiNEt.png Suji YanTimothy ShenJeff WentworthTerence Kwok en TBD false https://speak.ethtokyo.org/conference-2025/talk/3SUQCX/ https://speak.ethtokyo.org/conference-2025/talk/3SUQCX/feedback/ Ethreactor Stage Solo Talk 15min 2025-09-12T12:00:00+09:00 12:00 00:15 In 1988, AKIRA put Japanese anime on the global stage for decades. Ethereum needs its own AKIRA moment. Jack, co-founder of Shinsei Galverse, reflects on four years of building anime and culture onchain, and explores how new models of IP can turn Ethereum from financial rails into a cultural force. conference-2025-10-ethereum-s-akira-moment-building-lasting-onchain-culture Counterculture Capital /media/conference-2025/submissions/SFG7AF/%E3%82%B9%E3%82%AF%E3%83%AA%E3%83%BC%E3%83%B3%E3%82%B7%E3%83%A7%E3%83%83%E3%83%88_2025-09-12_12.40.00_jcPfZ7F.png Jack Baldwin en What does it take for Ethereum to have its AKIRA moment? Jack, co-founder of Shinsei Galverse, draws on four years of making anime onchain to show why culture is Ethereum’s soft power. The story begins with the NFT era: a time of broken incentives, but also the moment when designers, artists, marketers, and storytellers entered the ecosystem, and began to build the foundations of Ethereum's future messaging and influence. Jack explores what's required to continue growing the cultural capital of Ethereum: viable models and careers, ways to build and distribute audiences, keeping Ethereum as a creative frontier. He looks at exemplars, including Galverse - that grew from a million-dollar mint to Shibuya billboards, streaming services, and Nike/Levi’s collabs, proving what's possible when new IP emerges onchain. Looking forward, the talk explores the next wave: tokenized culture beyond NFTs, short-term capsule experiments, creative collectives, and brand / IP tokens. What's the ultimate form we can look forward to? What is the AKIRA moment for Ethereum? The call to action: support creators, contribute to culture, and help build the conditions for Ethereum’s AKIRA moment to secure its future as a cultural and technological force. false Ethereum’s AKIRA Moment: Building Lasting Onchain Culture https://speak.ethtokyo.org/conference-2025/talk/SFG7AF/ https://speak.ethtokyo.org/conference-2025/talk/SFG7AF/feedback/ Ethreactor Stage Solo Talk 15min 2025-09-12T12:15:00+09:00 12:15 00:15 Moving intellectual property as real world asset on chain can only be the first building block to achieving true DeSci. By breaking up the entire scientific process into a composable stack of various scientific protocols that allow science and scientific DAOs to collaborate freely, we might achieve true open science. In my talk Id like to explore what this idea would look like and discuss how we might get there. conference-2025-61-the-state-of-decentralised-science-and-how-we-might-achieve-scientific-composability Actual Intelligence /media/conference-2025/submissions/JNYTJQ/%E3%82%B9%E3%82%AF%E3%83%AA%E3%83%BC%E3%83%B3%E3%82%B7%E3%83%A7%E3%83%83%E3%83%88_2025-09-12_12.12.11_C2ilZxE.png Ivo Betke en Moving intellectual property as real world asset on chain can only be the first building block to achieving true DeSci. By breaking up the entire scientific process into a composable stack of various scientific protocols that allow science and scientific DAOs to collaborate freely, we might achieve true open science. In my talk Id like to explore what this idea would look like and discuss how we might get there. false bio.xyz molecule.xyz https://speak.ethtokyo.org/conference-2025/talk/JNYTJQ/ https://speak.ethtokyo.org/conference-2025/talk/JNYTJQ/feedback/ Ethreactor Stage Panel discussion 2025-09-12T12:35:00+09:00 12:35 00:30 AI agents, blockchains, and public goods funding are reshaping how humans collaborate, build, and sustain communities. This session brings together perspectives from DevRel, DAO governance, AI agent design, and incentive engineering to explore the next generation of coordination—spanning developer education, agent-native tools, and token-based collaboration. conference-2025-64-agent-native-coordination-dao Actual Intelligence /media/conference-2025/submissions/WRKKKJ/%E3%82%B9%E3%82%AF%E3%83%AA%E3%83%BC%E3%83%B3%E3%82%B7%E3%83%A7%E3%83%83%E3%83%88_2025-09-12_12.11.08_QROBOxI.png Colton LiberackiYung AlgorithmDillon ChenGwénolé Martin en Key Topics 1. Developer Education in the Age of AI • Gwénolé Martin (Consensys): How AI is transforming the way developers engage with code, documentation, and service providers—from a DevRel perspective. 2. Sustaining Public Goods • Colton Liberacki (ENS DAO): Lessons from ENS DAO on sustaining and funding public goods within decentralized ecosystems. 3. Designing AI Agent Frameworks • Yung Algorithm (ElizaOS): The state of agents in Web3, what’s missing in current tooling, and how to think about autonomy, memory, and coordination for agent systems. 4. Incentive Alignment and Future of Work • Dillon Chen (Common.xyz): How AI and blockchain together can enable agent labor markets, token-based collaboration, and scalable, trustless productivity. false https://speak.ethtokyo.org/conference-2025/talk/WRKKKJ/ https://speak.ethtokyo.org/conference-2025/talk/WRKKKJ/feedback/ Ethreactor Stage Panel discussion 2025-09-12T13:10:00+09:00 13:10 00:30 As cryptocurrencies, NFTs, and DeFi positions grow in value, they remain exposed to constant threats. This session begins with dramatic real-world failures and hacks, then explores the gap between technical security capabilities and user mental models. Bringing together experts in UX research, smart contract audits, network-level defense, and hardware wallets, we will provide a holistic look at how to truly protect your on-chain assets. conference-2025-68-how-to-protect-your-on-chain-assets Counterculture Capital Maika IsogawaJirachiTomas VaicPaul Clemson en Key Topics 1. Learning from Hacks and User Mistakes • Maika Isogawa (Webacy): Drawing on user research to reveal critical gaps between security tech and user understanding. Through case studies and live demos, she will present practical frameworks for creating security experiences that users actually trust and comprehend. 2. Smart Contract Security • Paul Clemson (Quantstamp): Insights from auditing—common pitfalls developers must avoid and lessons from the Ethereum security ecosystem. 3. Automation and Network Defense • Jirachi (Drosera): How security automation and threat detection networks can scale ecosystem safety. 4. The Evolution of Self-Custody • Tomas Vaic (Trezor): Progress in hardware wallets (HWWs) and the ongoing efforts to make self-custody user-friendly enough for mass adoption. 5. Looking Ahead • Account abstraction, ZK-powered security, and why balancing UX with security is the key to mainstream adoption. false https://speak.ethtokyo.org/conference-2025/talk/C3TTES/ https://speak.ethtokyo.org/conference-2025/talk/C3TTES/feedback/ Ethreactor Stage Panel discussion 2025-09-12T13:40:00+09:00 13:40 00:30 This session will explore the evolving landscape of public goods in Web3, connecting insights from deep-tech research, decentralized science (DeSci), and philanthropy. Speakers will examine how public goods are created and distributed, why they matter for Ethereum and human civilization, and whether Ethereum’s unique approach to funding them provides a lasting advantage. conference-2025-63-present-and-future-of-public-goods-funding Counterculture Capital /media/conference-2025/submissions/CBNZLW/%E3%82%B9%E3%82%AF%E3%83%AA%E3%83%BC%E3%83%B3%E3%82%B7%E3%83%A7%E3%83%83%E3%83%88_2025-09-12_12.14.26_XQehj6K.png David CaseyEliza PancakeHiro Taiyo Hamada en The discussion will touch on: • Lessons from bridging traditional philanthropy and crypto-native models • Real-world areas where public goods thinking can make a difference • The opportunities and challenges posed by the growing variety of funding models • Strategies to overcome free-rider problems and foster collective action • How Web3 public goods can break out of the crypto bubble to positively impact society in the coming decade false https://speak.ethtokyo.org/conference-2025/talk/CBNZLW/ https://speak.ethtokyo.org/conference-2025/talk/CBNZLW/feedback/ Ethreactor Stage Panel discussion 2025-09-12T14:15:00+09:00 14:15 00:30 From the perspective of real-world implementation and user experience, the discussion will explore: • The role of Ethereum as social infrastructure • Why its foundational values matter in the context of digital ID • How government-led systems like Japan’s My Number intersect with Ethereum’s philosophy • What a “coexistence model” between centralized frameworks and decentralized innovation could look like conference-2025-62-ethereum Tomo TagamiHiroyuki TachibanaAya Miyaguchi ja-jp From the perspective of real-world implementation and user experience, the discussion will explore: • The role of Ethereum as social infrastructure • Why its foundational values matter in the context of digital ID • How government-led systems like Japan’s My Number intersect with Ethereum’s philosophy • What a “coexistence model” between centralized frameworks and decentralized innovation could look like false https://speak.ethtokyo.org/conference-2025/talk/T8HDHZ/ https://speak.ethtokyo.org/conference-2025/talk/T8HDHZ/feedback/ Ethreactor Stage Solo Talk 15min 2025-09-12T14:50:00+09:00 14:50 00:15 RealFi - Exploring how Ethereum can more effectively engage with real-world contexts: what is required, what remains absent, and the strategies that may enable broader adoption. I will reflect on the progress of the Ethereum ecosystem over the past decade, consider the structural gaps that still exist, and share how Funding the Commons is approaching these challenges. Finally, I will situate this in my own trajectory, beginning with early work in 2013 building merchant off-ramps for bitcoin, whi conference-2025-12-realfi-exploring-how-ethereum-can-more-effectively-engage-with-real-world-contexts Actual Intelligence /media/conference-2025/submissions/M7FZSG/%E3%82%B9%E3%82%AF%E3%83%AA%E3%83%BC%E3%83%B3%E3%82%B7%E3%83%A7%E3%83%83%E3%83%88_2025-09-12_12.18.25_keZOT49.png David Casey en RealFi - Exploring how Ethereum can more effectively engage with real-world contexts: what is required, what remains absent, and the strategies that may enable broader adoption. I will reflect on the progress of the Ethereum ecosystem over the past decade, consider the structural gaps that still exist, and share how Funding the Commons is approaching these challenges. Finally, I will situate this in my own trajectory, beginning with early work in 2013 building merchant off-ramps for bitcoin, which first drew me into questions of accessibility and practical use cases for decentralized technologies. false https://speak.ethtokyo.org/conference-2025/talk/M7FZSG/ https://speak.ethtokyo.org/conference-2025/talk/M7FZSG/feedback/ Ethreactor Stage Solo Talk 15min 2025-09-12T15:05:00+09:00 15:05 00:15 Allocating capital is how the world decides what matters. d/acc offers principles for what deserves support - but how do we build the funding engine around it? Isla - founder of Zuitzerland shares how they plan to build a permanent open-source oriented village and society sandbox in Switzerland to accelerate d/acc aligned builders. conference-2025-48-d-acc-the-swiss-way-building-physical-hubs-to-grow-the-d-acc-idea-machine Actual Intelligence /media/conference-2025/submissions/VWJDHE/%E3%82%B9%E3%82%AF%E3%83%AA%E3%83%BC%E3%83%B3%E3%82%B7%E3%83%A7%E3%83%83%E3%83%88_2025-09-12_12.19.03_py7Dm3L.png Isla en Allocating capital is how the world decides what matters. d/acc offers principles for what deserves support — but how do we build the funding engine around it? Our hypothesis: physical hubs can act as legitimacy concentrators in ways online systems can’t, anchoring sustainable funding for open-source and d/acc builders. Zuitzerland is our prototype: a physical hub for d/acc tech, an accelerator for open source, and a permanent web3-enabled village in Switzerland. It tests how: legitimacy can be staked through lived interaction, hubs can function as credibility-driven engines of capital formation, network effects similar to those of Silicon Valley can be bootstrapped in new contexts. false https://speak.ethtokyo.org/conference-2025/talk/VWJDHE/ https://speak.ethtokyo.org/conference-2025/talk/VWJDHE/feedback/ Ethreactor Stage Panel discussion 2025-09-12T15:25:00+09:00 15:25 00:30 This session will focus on the Asian community’s (including China and Japan) contribution to Ethereum’s early growth, reflecting on how Vitalik and Dan visited Japan around 2016, interacted with financial institutions, and engaged with the local blockchain community. The discussion will highlight Asia’s role in bridging East and West and share perspectives on the future of global collaboration. conference-2025-66-bridging-east-and-west-stories-from-the-early-days-of-ethereum-and-asia-s-support /media/conference-2025/submissions/9H7X3D/%E3%82%B9%E3%82%AF%E3%83%AA%E3%83%BC%E3%83%B3%E3%82%B7%E3%83%A7%E3%83%83%E3%83%88_2025-09-12_12.19.42_bK0yssK.png Vitalik ButerinAndy Dan en In this session , Andy Dan of Fenbushi Japan will sit down with Ethereum founder Vitalik Buterin to reflect on the essential role the Asian community played in Ethereum’s growth. The conversation will begin with stories from Vitalik’s 2016 visit to Japan—sharing little-known, memorable moments—and explore how communities in China and Japan offered unique forms of support, from in-depth technical discussions to rigorous commercial exploration, each contributing vitally to Ethereum’s early development. The session will then dive into technical themes, including Ethereum’s goal to expand its capacity tenfold over the next year and key upgrades like Pectra and EIP-7702 (Account Abstraction) . They will discuss how developers in Asia—with their deep experience in mobile internet ecosystems—can take a leading role in these efforts and build the next generation of “Web3 super-apps” capable of onboarding billions of users. Finally, they’ll look ahead to the next decade: Vitalik will share his insights and advice for builders in Asia, and discuss uncharted opportunities for East-West collaboration in technology, culture, and governance—painting a new vision of global cooperation. This is both a retrospective of Ethereum’s journey and a forward-looking discussion—meant to pay tribute to the past and inspire the future. false https://speak.ethtokyo.org/conference-2025/talk/9H7X3D/ https://speak.ethtokyo.org/conference-2025/talk/9H7X3D/feedback/ Ethreactor Stage Panel discussion 2025-09-12T16:00:00+09:00 16:00 00:30 This session will bring together protocol contributors, researchers, and hardware specialists to discuss the importance of individual validators (solo stakers) and the future of solo staking. conference-2025-67-why-individual-validators-matter-building-resilience-and-the-path-ahead Cypherpunks Anonymous /media/conference-2025/submissions/8RFXQN/%E3%82%B9%E3%82%AF%E3%83%AA%E3%83%BC%E3%83%B3%E3%82%B7%E3%83%A7%E3%83%83%E3%83%88_2025-09-12_12.23.44_m5HItFG.png Jules DoumecheDaik1Pol LanskiMikihiro Ono en There are currently around 1.12 million validators on Ethereum, most of which are concentrated in Europe and the US, and operated by large-scare node operators (Staking Service Providers). At the same time, the technical and financial barriers to spinning up / running a validator have been steadily decreasing year by year, thanks to better documentations, dedicated setup tools, and ongoing efforts at the protocol level. Against this backdrop, this session will bring together protocol contributors, researchers, and hardware specialists to discuss the importance of individual validators (solo stakers) and the future of solo staking. false https://speak.ethtokyo.org/conference-2025/talk/8RFXQN/ https://speak.ethtokyo.org/conference-2025/talk/8RFXQN/feedback/