Previously, Polymarket used UMA as its oracle, but now it has switched to Chainlink.
This has created a substantial negative impact for UMA.
It is still unclear whether UMA will continue to be used or if it has been completely replaced by Chainlink. In any case, Link has not only dominated DeFi but has also taken a big slice of the prediction market pie, demonstrating its strong business capabilities. The price of the token will depend on whether it can establish a clearer link between its buyback plan and business revenue.

JUST IN: Polymarket partners with Chainlink "to launch 15-minute crypto price markets featuring near-instant settlement and industry-leading security."

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