FTX, Synthetix, and PAX Gold are witnessing a surge in on-chain activity despite the broader cryptocurrency market downturn, according to Santiment's latest data. The Activity Matrix from Santiment highlights these networks as 'heating up,' with activity surpassing their three-month averages. Other networks showing increased activity include WAX and OriginTrail. Conversely, networks such as Maker, Lido DAO, and Rocketpool are experiencing lower activity levels, categorized as 'cold.' Santiment analyst Brian Q suggests that the uptick in on-chain activity for certain networks could indicate early signs of renewed investor interest or accumulation.