Who’s Who: The Seven-Party Cast Seven heavyweights have stitched together an end-to-end, on-chain-native ramp that turns a swipe of your credit card into crypto in your self-custody wallet—no centralized exchange detour required. • Mastercard & Shift4 Payments – the fiat on-ramp. They handle card acquiring, fraud checks, and full PSD2 / FinCEN compliance. • ZeroHash – the regulated clearing house. It swaps the fiat for crypto, runs KYC/AML, and guarantees settlement finality. • Chainlink – th...