In order for the Haven network to retrieve accurate and reliable price feed for XHV and all xAssets it requires an oracle. The oracle connects to a range of different price sources and feeds this to the network.
Haven intends to use multiple oracles to further decentralise the network and reduce the likelihood of price manipulation. Having launched the first asset [xUSD] with Chainlink providing the price feeds for XHV we will actively look for other suitable oracle services that meet the needs of the project. The live price feed from Chainlink can be found here