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I'm busy making a smart contract for the elrond blockchain and I need data about th external world such as crypto price feeds. does anyone know of any documentation or examples about how one can avail onself of the data

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The blockchain itself doesn't have that information, so you would need something like an Oracle. A chainlink smart contract is in the works, so we should have something like that in the near future. Still, keep in mind you have to trust a third party, so the results might either be approximate or wrong altogether.

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One has to be able to trust someone when dealing with outside data. It's unavoidable. But, talking about oracles: there has been talk about (and not just recently) Band/ChainLink cooperating with Elrond to provide those oracles. Is it known when these oracles will be avialable for us, developers to listen to what those oracles have to say? 

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