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It is the smallest fraction of BITCOIN
it is called Sats

1 Bitcoin = 10000000 Sats

I love to compare One Sats to one $USD even though I know that in a near future trade will only occur in Sats.

Thanks for this clear explanation. I wish to be a trader one day.

But base on market, which coins do you think or can encourage me to bag, that is trustworthy?

HIve is the best project in my opinion
I have to say that I am not a financial advisor. Just a regular blogger interested in Crypto. Never put more than you can afford to lose in the crypto market
Peace

That is what I always do because crypto can make one billionaire in an hour and can as well make one poor in a minute. Thanks for your advice.