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Flux’s First Party Oracle (FPO) is an oracle that allows users to publish data directly onto the chain using their proprietary open-source Provider Node. Thismakes published data as reliable as its sources, as Flux cannot edit ormanipulate published data in any way. Developers can connect their protocols andcontracts directly to the data feed contracts to aid in their building.
Pyth Network is an oracle that publishes financial market data to multiple blockchains. Various exchanges and market making firms contribute to theiravailable market data. The oracle continuously aggregates publishes prices to provide accurate price feeds for a number of different asset types such as USequities, commodities, and cryptocurrencies.
Launched in December 2020, API3 is a first-party oracle solution. The platform allows developers to use APIs connect their dapps to real world data streams.API3 can also be used by API owners. their proprietary Airnode technology canturn regular APIs into those that can be easily integrated into web3.
UMA’s Optimistic Oracle allows contracts to quickly request and receive data information. The oracle proposes prices and these prices are sent to their Data Verification Mechanism only if disputed. Developers can use their contracts to obtain price information for any length of time without the price needing to be written on chain.
DIA (Decentralised Information Asset) is a cross-chain, end-to-end, open-source data and oracle platform for Web3. The platform allows developers to source andverify data from traditional and digital financial applications. The feedsprovide information such as asset prices, metaverse data, lending rates andmore.
Band Protocol is a cross-chain data oracle platform that aggregates and connects real-world data and APIs to smart contracts. Band Protocol’s flexible oracledesign allows developers to use any data including real-world events, sports,weather, random numbers, and more. Developers can create custom-made oraclesusing WebAssembly to connect smart contracts with traditional web APIs withinminutes.
Switchboard allows the SOL community to push any form of data on-chain. The protocol can be used in many ways such as determining the current price of an asset for collateralized lending, determining the state of a tracking number to auto settle funds on arrival, and determining the current standings of fantasy sports rankings. Switchboard is also permissionless. From a developer’s perspective, you can build and manage your own data feeds, all of which can be done from Switchboard’s Publisher.
Chainlink is a DeFi oracle that gives Ethereum-based smart contracts access to real-world data and off-chain computation. Their products include data feeds, Verifiable Random Numbers (VRF), calling external APIs, and automated contracts. The protocol is meant to be able to verify whether the parameters of a smart contract with real-world data are independent of stakeholders.
