<h1>Introduction</h1>
<p>UPI (Unified Payment Interface) is a popular payment method in the INDIA. It is a completely cashless,<br>
Bank account to Bank account digital payment method using only a Virtual Payment Address (VPA) <a href="https://www.npci.org.in/product-overview/upi-product-overview" rel="nofollow">official site</a></p>
<h1>Requirements verification</h1>
<p><strong>Web</strong>: Chargeback risk<br>
<strong>Chargeback risk</strong>: Very low<br>
<strong>Privacy protection to other peer</strong>: High<br>
<strong>Mandatory data for a transaction</strong>: a user chosen VPA of the format [A-Za-z0-9]@[A-Za-z]<br>
<strong>Duration</strong>: Instant<br>
<strong>Region</strong>: India<br>
<strong>Fees</strong>: None<br>
<strong>Verifiable</strong>: through an API (to be explored)<br>
<strong>Fraud risk</strong>: Low<br>
<strong>Conclusion</strong>:</p>
<h1>Implementation information</h1>
<p><strong>Similar payment method</strong>: Revolut</p>
<h2>Setting up National Currency Account</h2>
<p><strong>Payment Method</strong>: UPI<br>
<strong>VPA</strong>: **<br>
<strong>Supported currencies</strong>: INR,<br>
<strong>Limitations</strong>: <em>Rs.1 Lakh per transaction</em><br>
<strong>Salt for account age verification</strong>: **<br>
<strong>Account name</strong>: **</p>
<h2>Create offer to buy BTC</h2>
<p>**Enable use of UPI<br>
No other changes necessary.</p>
<h2>Create offer to sell BTC</h2>
<p>**Enable use of UPI<br>
No other changes necessary.</p>
<h2>Buying/Selling BTC</h2>
<p>The buyer of BTC only needs to know the VPA of the seller. All other instructions should be the same as Revolut.<br>
BTC Seller only needs to know the buyer’s trade id</p>

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