What is MAS Psa?
MAS Psa explained for crypto payment merchants using Zateway.
MAS Psa is a key concept in crypto payments. With Zateway, merchants use non-custodial USDT and USDC checkout across Polygon, Solana, Base, BSC, Arbitrum, Optimism so MAS Psa connects directly to faster settlement, lower fees, and zero chargebacks.
Why MAS Psa Matters for Merchants
Understanding MAS Psa helps you design safer checkout. Zateway keeps funds non-custodial — payments route to your wallet while you still get webhooks, payment links, and API control.
How Zateway Handles MAS Psa
Zateway supports production and sandbox flows so you can test MAS Psa safely. Use payment sessions, HMAC webhooks, and multi-chain USDT/USDC to operationalize this concept without holding customer funds.
Best Practices
Prefer stablecoins over volatile assets, verify webhook signatures, wait for sufficient confirmations, and keep private keys offline. Pair MAS Psa knowledge with Zateway's 1% flat fee model for predictable unit economics.