live on mainnet · USDT / BTC / ETH

Accept Crypto Payments.
Pay just 1%.

OpexGT Pay lets merchants accept crypto seamlessly — hosted checkout + API + webhooks. Just a 1% flat fee, no aggregator middleman.

Start Accepting Crypto View the API

no setup fees no monthly cost multi-currency hmac-sha512 webhooks

Total Volume

$12,480

+18%

This week

Recent payments

Order #4821

USDT

+$250.00

Order #4820

BTC

+$1,400.00

Order #4819

ETH

+$880.00

Payment Received!

+$250.00 USDT confirmed

⬡ USDT-TRC20⬡ 1% Flat Fee⬡ Self-Custodial⬡ Webhook IPN⬡ Hosted Checkout⬡ HMAC-SHA512⬡ BTC + ETH Live⬡ Global Merchants⬡ Zero Setup Fee⬡ On-Chain Verified⬡ USDT-TRC20⬡ 1% Flat Fee⬡ Self-Custodial⬡ Webhook IPN⬡ Hosted Checkout⬡ HMAC-SHA512⬡ BTC + ETH Live⬡ Global Merchants⬡ Zero Setup Fee⬡ On-Chain Verified

flat fee, always

chains supported

<10s

status polling

24/7

chain monitoring

/// how it works

Three steps. That's the whole flow.

Create a payment

One POST request — or a no-code payment link from the dashboard.

Customer pays

Hosted checkout with QR. They pay straight to YOUR wallet.

Confirmed on-chain

We watch the chain, flip the status, and fire a signed webhook.

/// built api-first

One request. Full checkout.

POST the amount and currency — get back a hosted checkout URL with QR, live rates and on-chain confirmation. Status changes hit your webhook, signed with HMAC-SHA512.

POST /api/v1/paymentGET /api/v1/payment/:idwebhook: payment.completed

Read the full docs

$ curl -X POST https://opexgt.com/api/v1/payment \
  -H "Authorization: Bearer opex_live_..." \
  -H "Content-Type: application/json" \
  -d '{ "amount": 100, "currency": "USDT", "order_id": "ord_42" }'

200 OK · 142ms · api/v1/payment

/// features

Built for crypto-first merchants

A complete crypto payment infrastructure built for your business.

1% Flat Fee

Just 1% per transaction. No hidden charges. Gas fees are separate — paid by buyer or merchant.

USDT · BTC · ETH

Accept USDT-TRC20, Bitcoin and Ethereum. Live exchange rates, auto-converted at checkout.

Hosted Checkout

One API call → unique payment link with QR code + address copy. Mobile-first design.

Webhook IPN

HMAC-SHA512 signed callbacks. Idempotent. Retry-safe. Production-grade reliability.

Self-Custodial

No aggregator middleman. Funds land directly in your own wallet — you stay in control.

Global Merchants

India + worldwide. Payment links, analytics, team access and white-label checkout built in.

/// pricing

Just 1% per transaction

Setup free. Monthly free. Pay only when you receive. Gas fees pass through — transparent rates always.

Get API Key

Accept Crypto Payments.Pay just 1%.