<button
data-spankpay-key="test_quickstart_key"
data-amount="69.69"
data-currency="USD"
data-callback-url="https://pay-api.spankchain.com/quickstart/callback"
data-metadata="{}"
data-description="Test Invoice HTML"
data-accepted-currencies="ETH,BTC">
Pay with SpankPay!
</button>
<script src="https://pay.spankchain.com/spankpay.js"></script>
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