I dont know those altcoins you mention if those are have some potential to grow the price and if we can get a profit if Im invested that kind of altcoins. Myabe I need some research first before started to invested and to find out of how useful altcoins is that. And you mention about XRP is one of trusted altcoins that I have right now actually I buy some XRP as of now to take a chance earning from XRP.
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I only know XRP, however, I am reading also from other threads about this blocknet. I don't know if they are just shilling this project or not. But if you want a better assurance that your money will not be wasted, think of btc, eth and bnb. You will never go wrong with these 3.