A financial derivative escrow operates in a similar way. One or both parties lock collateral and enter into a financial contract at some price, analogous to futures or options. Let’s assume one participant made a deposit of 3,000 dollars on assumption that the oil price will be above 100$, another paid him a premium. In a week, depending on where the oil price stands, participants receive money in the agreed proportion, plus the first participant gets the remaining of their deposit. It is a decentralized and trustless analogue of a traditional option contract.