be aware that for example iin the USa IRS want their portion even if you use your bitcoin directly, they will know about it if you buy expensive thing like a lambo....
what happens if you mined 10 btc for free (barring costs ) and suddenly that was enough to buy a lambo ?
you need to declare no matter what you used to have that lambo, even if you bought it with rocks, substantially all wealth should be taxed
but for small ones, they simply don't care
if i grow the worlds biggest apple by accident on my tree,on my property its 100% mine
if i eat it myself and shit it out i pay no taxes
if someone swapped me a lambo for the apple whats the differnce ,i still acquired value from nothing so i pay no taxes
if i sell it to my neighbour who makes apple jam with it and we sell the jam for $500k i guess we owe taxes
the part im not sure about is when exactly does the government own 30% of my apple ?
is it when its still on the tree ? and the value is as yet unknown ?
is it when its converted to jam ?
does it go by yearly tax dates ?
i cant declare an apple that hasnt fully grown yet as its value is still appreciating etc