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Joonkyo Kim. Gopher. Backend. Kubernetes and Ethereum. CTO @dsrvlabs

Seoul, Republic of Korea
Joined July 2009
Photo by rootwarp.eth (@rootwarp)Photo by rootwarp.eth (@rootwarp)Photo by rootwarp.eth (@rootwarp)Photo by rootwarp.eth (@rootwarp)Photo by rootwarp.eth (@rootwarp)Photo by rootwarp.eth (@rootwarp)Photo by rootwarp.eth (@rootwarp)Photo by rootwarp.eth (@rootwarp)Photo by rootwarp.eth (@rootwarp)Photo by rootwarp.eth (@rootwarp)
rootwarp.eth retweeted
I was recently affected by the layoffs at @0xMiden, and I’m looking for my next Product Manager role in the Bay Area. I’d love to keep building in payments, especially stablecoins and agentic payments. Over the past few years at @0xMiden and @0xPolygon, I’ve: • Led a crypto wallet from scoping through launch to reach 20k user registrations, coordinating a seven-person team across engineering, design, and QA. • Worked with roughly 12 external ecosystem partners, translating their requirements, feedback, and integration blockers into roadmap and release priorities. • Built and launched AggLayer’s developer portal and sandbox, with tutorials and code examples to help developers get started. • Researched zero-knowledge infrastructure and develop the Chainless Apps framework, connecting technical research with practical use cases for developers. Working on a crypto wallet made the practical challenges of stablecoin adoption much clearer to me: how people bring funds in, move them across networks, and actually use them. I want to keep working on those problems, including how AI agents will make payments. I’ve also been building an offline, on-device LLM app and AI-assisted workflows for team syncs, product feedback, and moving GitHub issues through implementation. I’m comfortable getting into the code as well as owning the product. If you know PM hiring managers at @Stablecoin, @stripe, @Visa, or other teams building payments infrastructure and AI products, I’d really appreciate an introduction! And to my teammates at Miden and Polygon Labs: thank you. I’ve learned a lot from building with you, and wish you all the best!
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rootwarp.eth retweeted
Devcon 9 is coming to Lisbon! 🇵🇹 October 11–13, 2027 Building on Mumbai, we're bringing Ethereum's builders together with more friends and allies working toward a freer, more open internet.
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rootwarp.eth retweeted
Day 25/ We are doubling all usage limits for all Pro 100/200/500 tiers and Business Premium, effective today. We heard your kind feedback and won’t be reducing usage limits for Pro 200, so your Work and Codex usage will stay the same. We’re also going to continue offering extended limits for dots for now, and usage of your dot will still continue to be separate from your default usage. And we'll of course also keep shipping better models and other efficiency improvements that increase your effective usage over time.
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구글 $GOOGL 클라우드가 54분짜리 무료 워크숍 하나로 AI 에이전트 생태계 서열 정리해버림 ㅋㅋㅋ 다들 파라미터 키운다고 그래픽카드 영끌해서 불태울 때, 구글은 "에이전트한테 필요한 건 더 큰 뇌가 아니라 모든 걸 기억하는 그래프다" 이 한마디로 팩트 폭격 날림. 단순 프롬프트 놀음에서 에이전트, 지식 그래프(Knowledge Graph), 그리고 스스로 진화하는 Self-Improving 에이전트로 넘어가는 풀스택 가이드라인을 라이브 코딩으로 그냥 다 까버렸음. 우주 조난자 구조하는 'Way Back Home(Survivor Network)' 시나리오로 아키텍처 짜는 법을 보여주는데, 핵심 요약하면 이렇다. • Cloud Spanner Graph + 3D 시각화: 생존자, 스킬, 자원, 관계를 스패너 그래프 DB에 싹 다 때려 박고 React랑 Three.js로 3D 행성 구체 위에 노드 띄워서 실시간으로 보여줌. • 하이브리드 GraphRAG 검색 (~30분 구간): 기존 단순 RAG는 키워드 안 맞으면 바로 바보 되는 게 일상임. 여기선 스패너에 Text Embeddings 물려서 의미 기반(semantic_search)이랑 정확한 필터(keyword_search)를 같이 돌리고, 이걸 RRF(Reciprocal Rank Fusion)로 기가 막히게 합침. 예를 들어 'medic' 찾으면 단순 글자 매칭이 아니라 그래프 엣지 타고 들어가서 'Medical Training', 'first aid', 'surgery' 스킬 가진 생존자를 알아서 낚아채 옴 ㅋㅋㅋ • ADK 멀티모달 파이프라인: 에이전트 혼자 다 하라고 하면 뇌절 오니까 SequentialAgent로 분업화시킴 (upload → extraction → spanner → summary). 현장 사진 한 장 던져주면 Gemini Vision이 "엔지니어 데이비드 첸이 발광 숲에서 에너지 크리스탈 발견했는데 상황 심각함" 이런 식으로 엔티티랑 관계 뽑아내서 스패너 그래프에 자동 저장하고 요약 리포트까지 원스톱으로 뽑아냄. • Vertex AI Memory Bank로 무한 진화 (~47분 구간): 이게 진짜배기임. 챗봇들이 세션만 껐다 켜면 기억 리셋되는 붕어 지능인데, 여긴 search_preferences(선호 검색 방식/자주 찾는 스킬)랑 urgent_needs_context(모니터링 중인 부족 자원) 두 가지 토픽으로 장기 기억을 박아버림. 세션 끝날 때 자동 저장하고 다음 실행 때 PreloadMemoryTool로 불러와서, 쓰면 쓸수록 유저 입맛에 맞게 알아서 똑똑해지는 자가 발전 구조를 완성함. 결론: 남들 아직도 프롬프트 깎으면서 단순 RAG 붙잡고 씨름할 때, 구글은 Spanner + Gemini + ADK + Memory Bank 하나로 묶어서 엔터프라이즈급 풀스택 에이전트 생태계를 통째로 표준화하는 중임. 빅테크 중 클라우드 인프라도 있고, 자체 모델도 있고, DB까지 한 번에 비벼서 이런 괴물 아키텍처 뽑아낼 수 있는 곳은 결국 구글밖에 없다는 걸 증명해버림 ㅋ Not financial advice
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rootwarp.eth retweeted
저도 일본 블록체인 업계 동향을 꾸준히 팔로업하기 위해, 텔레그램에서 관련 뉴스와 소식을 한국어로 정리해 공유하고 있습니다 🇯🇵 일본 블록체인 시장에 관심 있는 분들은 편하게 들어와 주세요! 🔗 t.me/Japanblockchainnews
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rootwarp.eth retweeted
We believe voice is the most natural way to interact with intelligence, so we created Dessa, the most authentic full-duplex speech model ever built. Talking with it feels like talking with a person…full of emotion, nuance, pauses, and a natural cadence. block.xyz/dessa
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rootwarp.eth retweeted
The Optimum team is pleased to announce our first mainnet deployment, mump2p on Ethereum. With mump2p, data moves across all of Ethereum 2-3x faster, boosting validator performance and network health. $3.4B of Ethereum stake is already being boosted by mump2p, and we’re now opening up free access for all Ethereum node operators.
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We’ve lost an icon. Margaret Hamilton, a computer science pioneer best known for her work at MIT leading development of the flight software for the Apollo missions to the moon, has died at 90. Read about her legacy via MIT News: news.mit.edu/2026/margaret-h…
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rootwarp.eth retweeted
Excited to share our fourth partnership announcement! 🤝 sbigroup.co.jp/news/2026/100…
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Today the EF and OA announce zkAPI—a new means for private AI Picture this: deposit ether into a vault, sign a zk proof, get a fixed amount of private inference. Advances like these help us move past middlemen's requirements that we link our data and identities. Read more below
Quick updates on the Open Anonymity project (@OpenAnonProject)! 1. OA-chat is live! You can now signup: chat.openanonymity.ai 2. We collaborated with @ethereumfndn (@VitalikButerin, @DavideCrapis, @VittoStack, @curryrasul) to develop zkAPI, a new zero-knowledge protocol for accessing gated / paid APIs with unlinkability. It’s like a generalization of OA unlinkable inference that also abstracts payments away. Now also available on OA-chat! I'm excited because more infrastructure should exist where privacy and sovereignty is foundational and people are in control.
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Ethereum Institutional Summit 2026 Sep 25, Tokyo. 11 sessions done. Thank you to all who spoke, sponsored, supported and attended. Japan's first Ethereum-focused, invitation-only summit for financial institutions & institutional investors eis.fracton.ventures #EIS2026
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We can probably get 8 second slots and 2-3 minutes finality by early 2028 already, if we play our cards right and get faster slots done in Hegotá. Let’s get a fast cryptographic world computer!
THE BLOCK: Vitalik Buterin says Ethereum is called a "blockchain" mostly "for historical reasons" and is turning into a "cryptographic world computer." Buterin projected slots of 4 to 8 seconds by 2030, and finality in 8 to 32 seconds in a new blog post.
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rootwarp.eth retweeted
Reminder: you can now sync an ethereum node within half a day and with aggressive settings the space it takes up on disk can be under half a terabyte. EIP-4444 and hard work by client teams on optimizing snap sync has improved things *a lot*. Glamsterdam will improve the sync situation further still (eg. Nimbus's new sync protocol uses it)
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Grok 4.7 is here. It's a notable improvement over Grok 4.6 at the same price and speed.
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rootwarp.eth retweeted
National sport just went on-chain using @injective . Mongolia's national motocross championship, the MONGOL MX League, closed its 2026 season on 22 August. Within ~2 hours, the official results were verified on Injective, signed by Mongolian Sports Corporation from its own wallet.
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rootwarp.eth retweeted
BREAKING: NEAR launches confidential perpetual futures trading powered by Hyperliquid. Allowing users to open positions without publicly linking trades to their accounts.
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rootwarp.eth retweeted
IQ points per watt: Humans: 5 AI: 0.000001
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