ETHGlobal · Oct 9, 2025

Panagiotis Kakalis from Tools for Humanity presents Worldcoin's mini-app ecosystem at ETHGlobal Prague 2025. Learn how to build and monetize mini-apps with instant access to 20M+ verified users through World ID's proof-of-personhood system. The workshop covers the Mini Kit SDK features (notifications, crypto payments, user verification), demonstrates creating a mini-app in minutes, and explains how to qualify for hackathon prizes by leveraging World ID's anti-bot capabilities. Discover success stories like Auto (1 token/day airdrops) and Credit ($5M raised) while exploring the growing $40M TVL ecosystem. 00:00 - Introduction to Worldcoin's Human Verification Network 00:43 - Mini-App Advantages: Instant 20M User Access 01:17 - Mini Kit SDK Features & Proof-of-Personhood 01:56 - World App Store Discovery & Quality Standards 02:31 - Growth Metrics: 1B Impressions, 500k DAU 03:12 - Global User Base: 160 Countries, 12M Verified 03:54 - $40M TVL Opportunity in Emerging Ecosystem 04:33 - Roadmap: Scaling Distribution & Wallet Features 05:14 - Success Stories: Auto, Plus, Credit 05:52 - Developer Resources & Submission Portals 06:31 - Live Demo: Creating a Mini-App in Minutes 07:25 - Template Setup & Local Development 08:31 - QR Code Testing with World App 10:36 - Payment Flows & Contract Whitelisting 12:33 - Hackathon Criteria: World ID Integration 13:18 - Q&A: App Review Process, SDK Differences 15:15 - Transaction Sponsoring & Gasless UX 17:23 - Deployment Options & Verification Toggles 20:09 - Verified vs Non-Verified User Experiences 21:34 - Closing: Show of Hands for Mini-App Builders _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 🇨🇿 *ETHGlobal Prague* This workshop is specifically for ETHGlobal Prague, a 3-day hackathon held May 30 - June 1 2025, 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 Prague 2025 playlist here: https://youtube.com/playlist?list=PLXzKMXK2aHh5Vv-ZobDU2YMWekDFYvOqd&si=SoQ5O2TOAK8RkYf- _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ ✅ *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 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

ETHGlobal · Oct 9, 2025

Join Panagiotis Kakalis, for a World Workshop! This workshop originally streamed at ETHGlobal Prague and is being repurposed for the ETHGlobal New Delhi Hackathon! Panagiotis Kakalis makes the case for building a World App Mini this weekend and shows how fast it is to ship one. He explains the World ecosystem (World App, World ID, proof-of-personhood via the Orb), why Mini Apps matter (distribution to 20M+ users, notifications, contacts, payments, gas sponsorship), and how the MiniKit SDK lets you gate features to verified humans and whitelist contracts for safe transactions. The live demo covers setting up a Mini App in the Developer Portal, using the Next.js template, tunneling with ngrok, scanning the QR in World App, verifying users, receiving payments, and enabling sponsored transactions. Q&A touches review/moderation, differences from Farcaster “mini” apps, hosting (Vercel/IPFS/any URL), and design tips to leverage World ID. 00:08 Why build a Mini App this weekend 00:27 What World is building: the Real Human Network 00:48 Proof of Personhood & Orb verification (read the whitepaper) 01:18 Mini Apps: benefits & exclusive primitives (MiniKit SDK) 01:43 Notifications, contacts, payments, World ID gating 02:11 Discovery via World App Store; quality review 02:34 Early traction: impressions, users, DAUs (growth context) 03:02 User geography & verified accounts 03:30 Dev ecosystem stats; opportunity (only ~200 Mini Apps) 03:59 TVL, opens, WLD volume; 2024–25 goals 04:22 Where to improve: retention & utility focus 04:43 Product focus: distribution, wallet/World ID, dev simplicity 05:15 Case studies: Auto, Plus, Borum, Cred (lending) 06:13 Links: docs, dev portal, Telegram support; ETHGlobal vs Dev Portal submissions 07:09 Live demo: creating a Mini App in the Dev Portal 07:39 Choose “Mini App (Cloud)”; name & scaffold 08:11 Use Next.js template; env setup 09:03 Expose locally with ngrok; add app ID & auth URL 09:40 Scan QR with World App; first run & debugging 10:43 Reading user info; payments UI; verify action 11:26 Safe txs via contract allowlist (whitelisting) 12:20 Whitelisting a contract in the Dev Portal 12:59 Bounty guidance: leverage World ID (one human, one account) 13:32 Q&A: app review & ongoing monitoring 15:00 MiniKit vs Farcaster’s “mini” (different SDKs) 15:31 Sending contract txs; verify command recap 17:27 Hackathon submissions & Dev Portal role 18:17 Gas sponsorship for verified users (sendTransaction flow) 18:42 Content guidance (no gambling) 19:44 Hosting options: Vercel/IPFS/any URL 19:51 Gating to verified-only users (checkbox/logic) 20:38 Mixed UX: unverified can try; perks/paywalls for verified 21:09 Design pattern: put a “World ID wall” where it makes sense 21:40 Wrap-up & show of hands _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 🇮🇳 *ETHGlobal New Delhi* This workshop is specifically for ETHGlobal New Delhi, a 3-day hackathon held September 19-21 at the India International Convention & Expo Centre, 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 New Delhi 2025 playlist here: https://www.youtube.com/playlist?list=PLXzKMXK2aHh7zCFW3hBqatZ18rQaYeEJL _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ ✅ *Follow World* X: https://x.com/worldcoin ✅ *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

EthCC · Jul 18, 2024

App Stores have a central place in our digital life, serving as the primary hub for distributing digital services. Their centralisation in the hands of a few major players jeopardizes our freedom. Let’s explore how we can decentralize them… The video features a speaker discussing the future of decentralized app stores and the importance of creating an open ecosystem that values privacy and freedom. The talk delves into the history of operating system distribution platforms, from mainframes to modern app stores, and emphasizes the need for a permissionless distribution system within the web3 ecosystem. The speaker explains how their platform, Metamask, introduced NAPS (community-built applications) to allow developers to enhance the wallet with new features without centralized control. The focus is on creating a permissionless evaluation system where community sentiment, rather than a central authority, determines app trustworthiness. Key capabilities required for this system include permissionless evaluation, registration, and security enforcement. The video also covers identity verification within a peer-to-peer network and the establishment of trust circles through peer trust assertions to evaluate apps' security credibly. Architectural principles such as censorship resistance and leveraging decentralized storage like ceramic network and Verax for storing verifiable credentials are also discussed to ensure data integrity and trust value calculations.