Alchemy Pay and Sei both announced participation in Mastercard’s crypto partner program, reflecting Mastercard’s ongoing engagement with digital asset and blockchain firms. Alchemy Pay said the partnership focuses on payment tools that bridge fiat currency and cryptocurrency and on exploring on-chain commerce integrations worldwide. Sei said its participation follows prior collaboration with Mastercard on a white paper outlining a framework for evaluating blockchain in financial services. Together, the announcements point to broader efforts to link digital asset infrastructure with mainstream payment systems and assess blockchain for real-world financial use cases.