OPEN-SOURCE SCRIPT

KIMCHI_PREMIUM(UPBIT/COINBASE)

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**KIMCHI PREMIUM (UPBIT / COINBASE)**

This indicator measures the Kimchi Premium — the price difference between Bitcoin traded on a Korean exchange (Upbit, KRW pair) and a global USD-based reference (Coinbase BTCUSD), adjusted for the USD/KRW exchange rate.

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### 🔍 Concept

The Kimchi Premium is calculated as:

[
\text{Kimchi Premium (%)} = \frac{\text{KRW Price} - (\text{USD Price} \times \text{USDKRW})}{\text{USD Price} \times \text{USDKRW}} \times 100
]

* **KRW Price** → Upbit BTC/KRW
* **USD Price** → Coinbase BTC/USD
* **USDKRW** → Exchange rate

This ensures that the comparison is normalized into the same currency (KRW), allowing a clean measurement of relative price deviation.

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### ✅ What This Indicator Shows

* **Positive values** → Bitcoin is trading at a premium in Korea
* **Negative values** → Bitcoin is cheaper in Korea (reverse premium)
* **Near 0%** → Prices are aligned globally

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### ⚙️ Why Coinbase BTCUSD?

This script uses **BTCUSD (not BTCUSDT)** to maintain strict currency consistency:

* Eliminates stablecoin-related distortions (e.g., USDT depeg)
* Provides a cleaner, “theoretical” premium based on fiat pricing

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### ⚠️ Important Notes

* This reflects **relative price deviation**, not arbitrage profitability

* Does **not account for**:

* fees
* transfer constraints
* slippage
* capital controls

* Coinbase may not always reflect the fastest-moving global price (compared to derivatives-heavy exchanges like Binance)

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### 📊 Practical Interpretation

* Rising premium → strong local demand / capital inflow
* Falling premium → weakening domestic demand or global price catching up
* Divergence between price and premium can signal structural imbalance

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### 🧠 Suggested Use

This indicator is best used alongside:

* BTCUSD or BTCUSDT price trends
* USDKRW (currency strength)
* Market liquidity / sentiment indicators

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### 📌 Summary

This script provides a **clean, currency-consistent Kimchi Premium metric**, isolating domestic vs global Bitcoin pricing without stablecoin distortion.

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