Chainlink has partnered with Mastercard to enable over 3 billion Mastercard cardholders to purchase cryptocurrencies directly through on-chain services. This collaboration integrates technologies from Shift4, Zerohash, XSwap, and Uniswap, utilizing Chainlink's cross-chain protocol for data transmission. Mastercard's latest move follows its recent partnerships with MoonPay and Kraken, aiming to bridge traditional payment systems with on-chain transactions. The service will facilitate fiat-to-crypto exchanges across a multi-chain network, enhancing accessibility for users worldwide.