Oobit is an example of a wallet-native payments system that lets stablecoins be spent through card-acceptance networks without first moving funds into a custodial balance. In a stablecoin payment settlement flow, the payer authorizes a transfer from a self-custody wallet, the payment is priced and risk-checked in real time, and the merchant is paid in local currency through established acquiring and card-settlement rails.
A typical flow involves (1) the customer and their self-custody wallet holding a stablecoin such as USDC or USDT, (2) a payment orchestration layer that prepares the authorization request and pricing, (3) on-chain settlement infrastructure that moves value from the payer’s wallet, and (4) traditional merchant acceptance components: the point-of-sale (POS) terminal or online checkout, the merchant’s acquirer, and downstream card-network and issuer-side settlement processes. Even when the payer uses on-chain assets, most merchants continue to receive fiat deposits via their existing acquirer relationship, preserving familiar reconciliation and chargeback-adjacent processes for the merchant.
The sequence generally begins when the merchant initiates a purchase amount in local currency at the POS or checkout page. The customer selects a stablecoin payment method, and the system returns a quote that translates the fiat purchase amount into a stablecoin amount, incorporating conversion spreads and network costs; some implementations present a settlement preview showing the rate, expected fees, and the merchant payout amount before the customer approves. The customer then signs a single wallet authorization, which triggers an on-chain transfer (or a set of coordinated on-chain actions) that settles value to a settlement address or liquidity venue. In parallel, the merchant side receives an authorization decision and completes the sale, while the acquirer and downstream rails proceed with standard clearing and settlement steps that result in a fiat payout to the merchant’s bank account.
On-chain settlement finality is determined by the underlying blockchain’s confirmation rules, while merchant-facing finality is typically expressed through the card/acquirer lifecycle (authorization, clearing, settlement) and merchant funding timelines. To keep the user experience consistent with card payments, systems often rely on pre-trade liquidity, real-time risk controls, and automated treasury operations that bridge on-chain value into fiat payouts. Compliance checks (for example, sanctions screening, transaction monitoring, and jurisdiction-specific KYC where required) are commonly integrated before or during authorization, since stablecoin payments combine blockchain traceability with regulated fiat endpoints.