This week, Ripple launched its RLUSD stablecoin, pegged 1:1 to the US dollar. Advisory board member and former RBI governor Raghuram Rajan noted that stablecoins could soon play a key role in private payment systems.This week, Ripple launched its RLUSD stablecoin, pegged 1:1 to the US dollar. Advisory board member and former RBI governor Raghuram Rajan noted that stablecoins could soon play a key role in private payment systems.