BTC Weighted Composite Index

This script was written to complement my custom built equal weighted btc composite indice:

type the following text as the symbol:

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(BITMEX:XBTUSD*42.74+BINANCE:BTCUSDT*31.41+BITFINEX:BTCUSD*23.47+COINBASE:BTCUSD*8.1+BITSTAMP:BTCUSD*8.2+KRAKEN:XBTUSD*3.9+POLONIEX:BTCUSDT*1.1+GEMINI:BTCUSD*2.8+BITTREX:BTCUSDT*1.1)/122.82

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by applying this script to the above symbol: it shows total volume, in $ amounts across the 9 exchanges.