Ive been thinking that if your are holding big amount of bitcoin and you want it to transfer to fiat where i can withdraw it without any problem
Depends on your location. In my country it is not advisable to withdraw a huge fiat amount in just one big blow because of anti-money laundering laws. If you can withdraw a portion every week I guess it is safe to convert it to fiat.
That's called 'structuring' and they will grab your entire account.
There is NO safe way to exit, this is why the PRISTINE BTC's ( think satoshi ) have NEVER been spent, cuz there is no exit.
First thought would be to have sacrificial account in a bank you dont' use for your paycheck, or your savings. Cuz when GOV decides to lock U and seize they will grab all money that is 'mixed'
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really only safe thing is to accumulate BTC by mining and hope the USA US-Dollar collapses, and then once the USA gov is gone and the BIS/Israel are out of business, then folks will be safe, but for now its clear that BTC is just a PRETEXT to rob you and tax u to death by GOV.
All along its been the same, U acquire BTC by mining and you hold them to keep your wealth intact, they day trading bullshit of BTC is rather new, and of course ALL exchanges are GOV operations, and under their thumb, there is no free jurisction on earth, other than perhaps the BTC exchange in Nigeria, which of course means U lose.
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To answer your question, its back to the original BTC means to get cash, you find a cash buyer on the network, U meet in a public place and u sell btc to them as a cash transaction, then your done.
U use a bank your screwed for life, you use an exchange your screwed,
BTC was always 'anarchist' money off the grid, but as soon as you mix your BTC and GRID then your no longer an anarchist, your a sheep that has called the PIGS and has asked to be slaughtered.
Sure U can be an idiot day trader and play right into the IRS hands, and you just KNOW that the IRS loves this shit, as they have ran COINBASE since dayone, and all the USA exchanges. U mix BTC with a US bank ( and note +90% of bank on earth have their balls in USA grip ), its not a pretty site.
Just HODL, but u must sell, then sell for cash, in a public place.