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all right Im just gonna do a short little introduction um todays topic were going to show you how to build an oracle with fat contracts and then um kind of dive into uh an extension of this like implementation where we uh utilize an off-chain roll-up palette to ensure that these fat contract can um execute an atomic transaction on a substrate based chain so uh for me my name is Joshua Im a Dev Advocate but I also am a Dap developer at polynetwork um these are like uh some of my usernames so you can uh contact me in my email and uh so so what are we gonna cover today uh so what youre gonna learn is uh about how to build a decent like get closer to building like a decentralized Oracle thats fully customizable um the one that we built uh over the last just two weeks uh it just fetches a price through these HTTP requests to uh coin gecko so you can see that on the right side of your screen uh we interact with their API to get the Pairs and uh we uh then uh take that uh information