Nik Erzetič I Trustless Insurance Market Using FDC Web2 Connectivity I Flare I ETHGlobal Prague

Thu, Oct 2, 2025, 12:00 AM

Nik Erzetič from Flare presents a trustless insurance market demo using Flare Data Connector (FDC) at ETHGlobal Prague. Learn how to build a decentralized weather insurance agency leveraging FDC’s Web2 connectivity to fetch real-time data from OpenWeather API. Discover smart contract workflows for policy creation, risk assessment, and claims resolution—all without centralized control. This workshop covers key concepts like JSON API proofs, on-chain verification, and decentralized policy management, offering practical insights for developers building on Flare’s ecosystem. 00:00 Introduction to Flare’s Trustless Insurance Market Workshop 00:10 Overview: Weather Insurance Using FDC Web2 Connectivity 01:26 Workshop Agenda: Q&A, Quiz, and Flare Merch Giveaway 02:12 OpenWeather API Setup and Data Requirements 02:56 Policy Workflow: Holders, Insurers, and Decentralized Claims 04:23 Loss Criteria: Temperature Thresholds and Policy Terms 06:00 Policy Resolution: Expiration, Refunds, and Payouts 07:27 Decentralization Benefits: No Mandatory Proof Submissions 09:05 Flare Data Connector (FDC) for Web2 API Integration 10:35 JSON API Constraints: Public Access and Data Formatting 12:02 Weather Data Parsing: Coordinates and Temperature Metrics 14:12 Flare Developer Hub and Hardhat Starter Repository 15:50 Smart Contract Deep Dive: Policy Structs and Status Logic 17:18 Policy Creation: Premiums, Coverage, and Timestamps 20:25 Policy Claiming: Insurer Deposits and State Updates 23:34 Resolving Policies: On-Chain Proof Verification 29:54 Data Transport Objects (DTOs) and FDC Encoding 32:45 Payout Logic: Handling Losses and Expirations 35:20 JQ Filters: Transforming JSON for Solidity Compatibility 37:39 Workshop Recap and Next Steps _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 🇨🇿 *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 *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 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _