query("SELECT setting_key, setting_value FROM system_settings"); $settings = $stmt->fetchAll(PDO::FETCH_KEY_PAIR); $trc20_addr = $settings['usdt_trc20_address'] ?? 'TYv9V5J1P1eEwz7y3WqJg9M2yv7f7xXv3x'; $erc20_addr = $settings['usdt_erc20_address'] ?? '0x742d35Cc6634C0532925a3b844Bc454e4438f44e'; $bep20_addr = $settings['usdt_bep20_address'] ?? '0x742d35Cc6634C0532925a3b844Bc454e4438f44e'; ?>