MakerDAO has increased the yield on its stablecoin, DAI, from 3% to 8%, making it one of the highest rates offered by a major stablecoin issuer. A single crypto participant transferred 14.32 million DAI into MakerDAO's lending platform, Spark, likely to take advantage of the increased yield. Spark has recently restricted users from accessing its front end via virtual private networks (VPNs) to geo-block users from specific geographies, including the United States. This move is unusual in the DeFi sector and appears to specifically target U.S.-based users.