Cross Chain Swaps and Beyond With 1inch
summary
Three swap rails: Classic aggregation routes and splits across ~400 liquidity sources and executes in one transaction, often saving gas (example claim: 175,000 vs 205,000 gas when using 1inch vs Uniswap router); Fusion uses signed intents and a Dutch auction where resolvers compete (≤20) and can partial‑fill, shown by a 3,700 WETH swap filled above market; Fusion+ uses HTLC escrows and relayers for trustless cross‑chain settlement (Solana live); developer tools include portal, TypeScript/Go SDKs and a $12,000 bounty for non‑EVM Fusion+.
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chapters (17)
- 0:00Start
- 0:02Intro & agenda (classic swaps, Fusion, Fusion+)
- 1:151inch scale & origins (hackathon → $750B+ volume)
- 1:38Supported chains (EVM; Fusion/Fusion+ on Solana too)
- 1:59Classic aggregation: routing, split orders, gas optimizations
- 3:45Gas comparison vs Uniswap router
- 4:08Fusion intents: signed orders, Dutch auctions, gasless fills
- 5:42What is a resolver? Competition & partial fills
- 7:59Real trade example: fills above market rate
- 9:12Liquidity sources (CEX/DEX/off-chain/cross-chain/RWAs)
- 10:24Fusion+: cross-chain via HTLCs, UX & trustlessness
- 11:51HTLC basics: secrets, time locks, safety deposits
- 12:51Cross-chain flow: escrows, relayer, secret reveal, fallback
- 15:33Dev portal, docs, SDKs, proxy requirement
- 17:56Other APIs: spot price, balances, portfolio
- 18:34Bounties: non-EVM Fusion+, limit orders, API usage
- 19:19Links, support, Discord
