Aeternity uses decentralized oracle machine tthat brings in data from outside source. Aeternity was founded by a long time crypto- enthusiast and early colleague of Vitalik Bruterin, Yanislav Malahov. Aeternity quickly rise to the top Because they have 40 project in the world throughmarket cap. Aeternity has other features that makes it stand out compare to other smart contract and dapps platform. Aeternity uses prediction market for different voting and verification purposes from the platform.