The duel between the two largest stablecoins in the market has just taken an unexpected turn. According to a report from investment bank Mizuho, Circle's USDC has surpassed Tether's USDT in adjusted volume since the start of the year, a key indicator for measuring the actual usage of these currencies. This shift does not yet challenge Tether's dominance in capitalization, but it reveals an evolution in how these assets are used. The stablecoin market is now divided between financial power and actual usage.