International data for bullion vs MCX

#1
Dear Friends and Gurus

I will be very grateful, if my following querries be replied urgently:

1. The MCX and NCDEX in India do not have spot price for commodities (as I have understood, kindly correct me if otherwise). Then how the bhava copies provided by these sites/exchanges can be used for charting when there will always be a price difference from one contract to another?

2. Can the bhavacopies of commodities be used in meta-stock, if yes then how, kindly guide.

3. Is the data provided by Viratech and other similar data providers is based upon contract bhavacopies of MCX and NCDEX?

4. Can someone please provide free link for historical OHLCV data (date wise) for bullions/metals international price?

I will be very thankful for your valuable responses?
 

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