Add mention about SupraOracles

docs/cardano/guides/supra.mdx

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+sidebar_label: "Building on Milkomeda with SupraOracles"
+sidebar_position: 10
+---
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+# Building on Milkomeda with SupraOracles
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+You can use [Supra Pull Oracles](https://supraoracles.com/docs/price-feeds/pull-model/) with Milkomeda.
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+Supra provides decentralized oracle price feeds that can be used for on-chain and off-chain use-cases such as spot and perpetual DEXes, lending protocols, and payments protocols.
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+Supra’s oracle chain has its own consensus algorithm to try and achieve fast response times and fast finality.
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+Supra’s rotating node architecture gathers data from 40+ data sources and performs calculations to try to get an accurate value. The node provenance on the [data dashboard](https://supraoracles.com/data) also provides a historical audit trail.
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+You can also check out their developer docs [here](https://supraoracles.com/docs/overview), or learn more about the R&D behind SupraOracles [here](https://supra.com/research).