Daily Spot BTC ETF flows

Indicator for use on the daily timeframe to show combined capital flows into 8 of the largest spot bitcoin ETFs to allow the user to track potential buy and selling pressure on spot BTC.

The included ETFs are:
GBTC
ARKB
FBTC
HODL
IBIT
EZBC
BTCO
BITB

Net daily volume is derived from lower timeframe data (5 minute chart by default) for each ETF and multiplied by the average price for the period (defined by the mean of the high, low + close values). This gives the net capital inflow or outflow for each ETF, every period. The individual daily values are added together to give a total capital flow per day and plotted as columns. The cumulative sum of all previous periods is also calculated each period/day and plotted as a line chart.

This is the only indicator currently collating this capital flow data together and presents it as an easy to understand chart to help the user gauge market conditions. By using low time frame bars to calculate the up and down volumes, accuracy is improved.

Notes de version:

Improved code for price retrieval
Modified indicator behaviour so that it can be used across multi-timeframes
The indicator now calculates the net capital flow from the low time frame data to improve model accuracy
It should be borne in mind that the values of capital flows displayed are not absolute values, but correlated with the underlying flows, as there are external factors influencing the price data feed beyond the buy/sell volume of the individual ETFs (such as exchange spot and futures trading)