BTC Spot Aggregated Volume + 20EMA

The purpose of this indicator is to provide a more comprehensive view of Bitcoin's spot market activity by combining volume data from several sources.

1. Fetches and aggregates spot volume data for BTC from the following exchanges:

Binance (BTCUSDT)

Coinbase (BTCUSD)

Kraken (BTCUSD)

Bitfinex (BTCUSD)

Bitstamp (BTCUSD)

KuCoin (BTCUSDT)

Gate.io (BTCUSDT)

OKX (BTCUSDT)

Huobi (BTCUSDT)

2. Calculates a 20-period EMA on the aggregated volume to smooth out the data and identify volume trends.

This indicator is particularly useful for traders who want a broader view of real BTC spot market activity, rather than relying on a single exchange's data, which might be misleading or incomplete. By averaging across major exchanges, the indicator helps reduce noise and gives a more accurate picture of volume trends.