lets say usa dollar and all currencies will be highly devalued .....then how we know the btc value??
If USD is devalued in imagination also then whole world will suffer economic crisis in the first instance. I mean come on, USD forms the most basic formula for each currency in the world. I mean considering USD then followed by GBP.
I dont think USA will ever let it get devalued.
BTC value is literally has indirect relation with USD. I mean it's about the market cap that BTC is holding, how much money is in there! It will stay strong for longer though.
most traders use USDT so if something happens with usa dollar is my USDT Will be worthless over night?
Same here, I don't think USDT will get hampered with the devaluation. They will hold the positions by putting more liquid investments into it.