سعرPolkaOracle 

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PolkaOracle is a flexible, self-evolving oracle network built on Polkadot, providing applications or smart contracts with customized real-time on-chain data feeding services.

The recent DeFi hype in the market has greatly highlighted the importance of the oracle system: for all emerging industries based on the blockchain, whether it is DeFi or prediction markets, or supply chain finance, the prosperity of these industries all have put forward strict requirements on reliable, credible, secure and real-time oracle systems. With the expansion of blockchain applications, it is foreseeable that the demand for oracles will increase in the future, and the requirements for off-chain data will become more diversified and specialized.