The 'stablecoin sandwich': Why speeding up payments isn't so simple, according to Mastercard

The integration of stablecoins into mainstream financial systems faces practical hurdles despite their potential to accelerate global transactions. According to Mastercard leadership, the primary constraint is not the blockchain technology itself, but the slow conversion speeds within supporting traditional banking infrastructure. Transitioning funds between decentralized stablecoins and legacy fiat settlement networks introduces delays and operational overhead. Until these intermediary conversion layers are modernized, the promised speed advantages of digital currencies will remain partially constrained. Payment giants are actively exploring ways to bridge this gap through hybrid settlement models and direct digital asset integrations. The commentary underscores the complex realities of merging decentralized finance innovations with institutional banking standards.