Mastercard plans onchain settlement for 6 stablecoins across Ethereum, Solana, Base, Polygon, Arbitrum and XRPL

Mastercard is preparing regulated stablecoin settlement for issuers and acquirers, adding intraday, weekend and holiday options alongside its existing fiat settlement flow. The initial stack covers USDC, PYUSD, USDG, USDP, RLUSD and SoFiUSD on Ethereum, Solana, Polygon, Base, Arbitrum and XRPL, with Cross River, Lead Bank, CBW Bank, ARQ and Nuvei among early U.S. and LatAm participants. The point is liquidity: card auth already feels instant, but bank/provider settlement still lives on batch schedules, and Mastercard is pushing that backend toward 24/7 rails.

TLDR by @Benthic

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• USDC
• Arbitrum
• Solana
• POL