oracles
Oracles are an essential component in the functioning of decentralized systems, such as blockchain-based cryptocurrencies.
Oracles serve as the bridge between the blockchain and the real-world data.
They provide the blockchain with external information that can be used to execute smart contracts.
For example, in decentralized finance (DeFi) applications, oracles can provide real-time pricing data, allowing smart contracts to automatically execute trades based on predetermined conditions.
Chainlink
Chainlink was an innovator in the oracle technology.
Flare Time Series Oracles (FTSOs)
The Flare Network has a technology called FTSOs where signal providers contribute price data that is used on chain. People who have the FLR token delegate to FTSOs.
Here are some FTSO examples:
ScandiNodes
PAC Global