Stablecoin payments describe a transaction flow in which value held as a fiat-pegged cryptoasset (such as USDT or USDC) is used to pay a merchant that typically prices goods in local currency. In wallet-first systems, the payer retains control of funds in a self-custody wallet and authorizes each purchase by signing a request, rather than pre-funding a custodial balance. Oobit is one example of a payments layer that connects self-custody wallets to card-acceptance networks, enabling stablecoin spending at merchants that accept Visa.
A typical stablecoin payment begins with a compatible wallet holding supported assets and sufficient balance for the purchase amount and any network costs. Many modern payment experiences use gas abstraction, so the user sees a single “pay” confirmation while the system handles network fees and routing in the background. At checkout, the payer selects an asset (for example, USDT) and approves a single signing request that authorizes settlement for that specific transaction, limiting exposure compared with open-ended approvals.
Merchants generally receive settlement in local currency through established acquiring and card rails, while the payer spends stablecoins on-chain. In decentralized settlement designs such as DePay, the payment is initiated from the user’s wallet, confirmed on-chain, and then bridged into the merchant’s normal payout path so the merchant does not need to hold or manage crypto. This separation—crypto on the payer side and local currency on the merchant side—allows stablecoins to function as a consumer payment instrument while maintaining familiar merchant reconciliation processes (authorizations, batching, refunds, and chargeback handling where applicable); see settlement flow.
Stablecoin payments involve multiple cost and risk components, including network execution costs, FX conversion spread between stablecoin value and local settlement currency, and any card-network or acquirer fees embedded in merchant pricing. Refunds typically follow the merchant’s existing policy, but the return leg may be credited as local currency value and converted back into the user’s selected asset depending on the provider’s design. Because fiat on- and off-ramps and card issuance are regulated activities in many jurisdictions, providers usually apply identity verification and transaction monitoring; in some products, users can also see real-time status tracking during verification and at checkout via a settlement preview that itemizes the rate, fee handling, and merchant payout amount.
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