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Looks like you need an oracle module. I don't think there's a module ready to use, but there are many chains doing what you describe (Umee for example queries prices from exchanges). You'll also need an off-chain tool that does the querying to the API and sends messages to your oracle module. |
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I want to create a custom blockchain with an option that fetches data from external API and stores it in blockchain. Can anyone explain me the steps for it like which modules we need to create and how do we need to integarate them.
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