Sentinel Protocol
Flight Delay Insurance
About
The problem it solves **Parametric flight delay insurance, fully on-chain.** A traveler buys a policy for a specific flight. If that flight is delayed beyond a threshold or cancelled, they receive an automatic payout — no claim forms, no manual review, no adjuster. The contract decides and pays out by itself. **The problem with existing travel insurance:** - Claims are manual, slow, and frequently disputed - Insurers hold float for weeks while processing - Travelers often don't bother claiming small delays - No transparency into how payouts are calculated **What this protocol does differently:** - Policy terms are fixed in the smart contract at purchase time - A decentralized oracle network feeds real flight data on-chain - Payouts trigger automatically when the data conditions are met - Capital is pooled by underwriters, not held by a single insurer Use of AI tools and agents I used claude code and cursor a lot to code/think/design
How it's made
Challenges we ran into I had 2 issues - 1. working with pure solidity with HTS is hard , but I did my best doing HTS native erc20 - https://github.com/enderNakamoto/flight_hedera/blob/main/contracts/src/MockUSDC.sol 2. I had issues with verifying some of the contracts