Checkout, detection, and fulfillment in one payment flow.
Outpay turns USDC on Base into a provider-grade checkout system: hosted payment pages, automatic transfer matching, dashboard visibility, and signed webhooks.
Six steps from checkout to confirmed order
Merchant creates a checkout link
Set an amount and generate a shareable checkout link for an order.
Customer opens the checkout page
The hosted checkout page shows the exact USDC amount and network.
Customer pays USDC on Base
The customer sends the exact amount directly from their own wallet.
Outpay detects the payment on-chain
A worker watches Base and verifies the transfer against the checkout.
Merchant gets a signed webhook
Your store receives a signed event the moment payment confirms.
Order confirmed
The checkout flips to paid automatically, with no manual reconciliation.
See every payment as it happens
Payment volume, checkout status, and webhook delivery in one view. No spreadsheets, no manual reconciliation.
$48,204.12
99.4%
| Checkout | Amount | Status |
|---|---|---|
| chk_9k2n | 124.00 USDC | Paid |
| chk_1b7e | 58.50 USDC | Pending |
| chk_5a7f | 19.99 USDC | Expired |
Know the instant a payment confirms
Every webhook is signed so your server can verify it came from Outpay. No polling; your store gets notified as soon as the payment is detected on Base.
POST /webhooks/outpay
X-Outpay-Signature: t=..., v1=...
{
"event": "checkout.paid",
"checkout_id": "chk_9k2n",
"amount": "124.00",
"currency": "USDC",
"network": "base",
"tx_hash": "0x71c7...976f"
}Outpay never touches your funds
Payments move directly from the customer's wallet to yours. Outpay only reads the Base network to confirm the transfer happened.
Customer wallet
124.00 USDC
Merchant wallet
Outpay reads the chain, verifies only, never holds funds
Outpay© 2026 Outpay. Non-custodial checkout for USDC on Base.
Outpay is a non-custodial checkout and payment verification tool. Funds move directly from customer wallets to merchant wallets. Outpay does not hold, custody, convert, or settle customer funds.