Trading Notes | Oracles
① Price feeds are generally posted on-chain when the price change reaches a set threshold or when a specified heartbeat interval has elapsed.
② Smart contracts cannot directly read off-chain data, such as asset prices or match results. Oracles are needed to deliver this data on-chain.
③ When choosing a DeFi product, pay attention to the protocol’s price feed method. The more concentrated the price sources, the greater the risk.
$LINK 11.134（-0.76%）
① Price feeds are generally posted on-chain when the price change reaches a set threshold or when a specified heartbeat interval has elapsed.
② Smart contracts cannot directly read off-chain data, such as asset prices or match results. Oracles are needed to deliver this data on-chain.
③ When choosing a DeFi product, pay attention to the protocol’s price feed method. The more concentrated the price sources, the greater the risk.
$LINK 11.134（-0.76%）
