Premium is calculated as the percentage difference from Binance price (required base reference). Positive values indicate the exchange is trading at a premium compared to Binance.

• Global exchanges: Direct USD prices
• Korean exchanges: KRW prices converted to USD
• Premium = ((Exchange Price - Binance Price) / Binance Price) × 100%

• Primary: exchangerate-api.com
• Fallback: forexrateapi.com
• Cached for 1 hour to reduce API calls

Questions, feedback, or suggestions? We'd love to hear from you!