Oobit is one example of a payments application built around the idea that stablecoins can be spent directly from a self-custody wallet in everyday commerce. Stablecoin payments typically use fiat-pegged tokens such as USDC or USDT to reduce exposure to volatility while preserving the transfer properties of blockchain networks. A complete payment flow spans several layers: the user’s wallet and signing experience, on-chain transfer or authorization, currency conversion where required, and final merchant settlement through acquiring and card or bank rails.
In a wallet-first design, the user retains control of funds until the moment of payment. The user initiates a transaction at a point of sale (in-store “tap to pay” or online checkout) and authorizes it by signing in their wallet, analogous to approving a blockchain transfer. Modern implementations often employ gas abstraction so the user experience resembles a standard consumer payment, while the underlying system handles network fees and routing. Token choice, network congestion, and the user’s available balance determine whether the payment can be executed within the required authorization window.
After authorization, the payment is settled through an on-chain movement of value, commonly involving a stablecoin transfer to a settlement address or smart-contract-mediated routing. If the merchant ultimately receives local fiat, a conversion step is introduced: stablecoins are exchanged into the settlement currency and forwarded into the merchant’s acquiring pathway. This stage is sensitive to liquidity, slippage, and risk controls (for example, screening of counterparties and transaction patterns), because it bridges blockchain finality with traditional payment settlement conventions—see settlement flow for the step-by-step path from wallet signature to merchant payout.
Merchants generally reconcile payments through familiar infrastructure, including card networks and bank rails, receiving payouts in their local currency on established settlement schedules. The payment processor or issuer records the transaction for reporting, refunds, and dispute handling, while the merchant’s acquirer deposits funds into the merchant account. Where stablecoins are used only as the payer-side instrument, the merchant may not directly handle crypto assets, but still benefits from a customer experience similar to card-present or card-not-present transactions.
Stablecoin payment systems must coordinate blockchain irreversibility with merchant expectations for refunds and chargebacks by maintaining parallel records and controlled reversal workflows. Fee disclosure can include network fees, conversion spreads, and any processor charges, ideally presented before confirmation. Compliance processes commonly include identity verification for certain services, transaction monitoring, and sanctions screening, particularly when payments cross borders or involve wallet-to-bank settlement paths.