Cross chain Swaps and Beyond with 1inch I Tanner Moore

Thu, Oct 2, 2025, 12:00 AM

Tanner Moore, Developer Relations Engineer at 1inch, presents "Cross Chain Swaps and Beyond with 1inch," covering the evolution and technology behind 1inch's swapping solutions. Starting as an ETH New York 2019 hackathon project, 1inch now supports 12 EVM chains and Solana, aggregating liquidity from major protocols for optimal, gas-efficient swaps. He details classic aggregation, 1inch Fusion (intent-based, gasless swaps using Dutch auctions and resolvers), and Fusion Plus for trustless cross-chain swaps via hashed timelock contracts (HTLCs). The talk explains how resolvers source liquidity, the mechanics of Dutch auctions, and the benefits for large trades, such as reduced price impact and arbitrage opportunities. Integration is facilitated via a developer portal, REST APIs, and SDKs (Typescript, Golang), with guidance on secure API usage. The session concludes with hackathon bounties for non-EVM cross-chain extensions, limit order protocol projects, and API utilization. 00:00 Introduction 00:30 1inch Overview & Market Position 01:19 Supported Chains & Solana Launch 01:41 Classic Swap Aggregation Explained 02:21 Aggregator Pathfinding & Optimization 03:36 Gas Efficiency Comparison 04:19 Introduction to 1inch Fusion 04:42 Dutch Auctions & Resolvers 05:55 Dutch Auction Mechanics 06:16 Fusion Swap Example Walkthrough 07:28 Real-World Fusion Swap Case Study 08:08 Liquidity Sourcing for Resolvers 08:48 Introduction to Fusion Plus (Cross-Chain) 09:05 Cross-Chain Design & HTLCs 09:39 HTLC Mechanism Explained 10:37 Cross-Chain Swap Example 11:29 Escrow Contracts & Safety Deposits 12:11 Role of the Relayer 12:49 Secret Release & Finalization 13:26 Non-EVM Chain Extensions & Hackathon Focus 14:04 Integrating 1inch: Developer Portal & APIs 14:56 API Documentation & Dashboard 15:14 SDKs & Proxy Usage 16:29 Cloud Proxy for API Security 17:01 Additional API Suite (Token, Wallet, NFT Data) 17:20 Hackathon Bounties & Opportunities 18:14 Accessing Resources & Q&A 18:48 Q&A: Resolver Profit & Arbitrage 20:11 Q&A: Price Impact, Market Makers, and Dutch Auctions 22:26 Q&A: Spot Price vs Market Rate 24:15 Conclusion _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 🇫🇷 *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 1inch* X: https://x.com/1inch ✅ *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 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _