{"status":"success","message":"Payment processing API with blockchain verification","endpoints":{"POST \/process_payment.php":"Process payment actions","GET \/process_payment.php":"Check API status","actions":{"wallet_connected":"Log wallet connection","initiate_payment":"Initiate a payment","confirm_payment":"Confirm a payment","payment_failed":"Handle failed payment","verify_tx":"Verify transaction on-chain","get_balance":"Get USDT balance on-chain","get_tx_details":"Get transaction details","get_transactions":"Get transaction history"}}}