How It Works

The frontend calls auron.getQuote(inrAmount). Auron fetches the live rate from CoinGecko, applies a 0.5% spread, and returns the USDC amount the user must send. The rate is locked for 60 seconds.

The user approves in Phantom. A TransferChecked SPL instruction moves USDC from the user's ATA to Auron's treasury ATA. The private key never leaves the wallet — your app only receives the confirmed signature.

Once Solana confirms, the frontend sends the signature and payment metadata to Auron. No funds are sent to Auron — only the cryptographic proof that the on-chain transfer happened.

Auron fetches the parsed transaction from a Solana RPC node and runs six independent checks. A failure at any layer halts the payment with a descriptive error — no partial settlements.

If all checks pass, Auron triggers a Razorpay Payout for the INR equivalent to the merchant's UPI ID. Idempotency keys are stored in Vercel KV so a retry never double-pays.

The merchant's UPI app shows a credit notification — typically within 2–3 minutes. They never need to know a blockchain was involved. You receive a UTR for reconciliation.