My government did not legalize bitcoin yet so I can use bitcoin without pay any tax.
Usually I earn btc and convert into local exchange , I just paid some fee from transaction so I do not pay any tax.
Other exchange may apply tax because they already legalize bitcoin
Your exchange can't tax you, however your government can.
It varies from country to country, but in my opinion if you have bought bitcoin and after that you have sold bitcoin you need to pay tax for capital gain.
If you have earned bitcoin in any other way(signature for example) than you have to pay different tax, like income or something.
Still, there are no specific regulations in most countries.
But the problem is, even if you were making 200 bucks worth of bitcoin a month back then, let's say, in 2012 where the earlier signature campaigns took place (that I know, it may have been even earlier) then we are looking at around 100-300 bucks monthly. This is not much, but should be reported, but then again, no one does that. If it was FIAT in which you are getting paid, you get it in your bank account and having 100-300 coming in your bank account would most likely go unnoticed, BUT you were getting paid in BTC, so this means that let's say you spent from 2012 to 2014 posting, making a sum of anywhere from 10 to 20 BTC... yeah, that's a lot of money now.
The question is: how do you explain authorities why you never reported that you got paid these coins when you cash out? and what details do they ask for when you cash out? screenshots of the threads in which you got paid at, including signed addresses to prove you own the coins? how the hell does this work specifically? still 0 answers.
No, he told me they wont punish me when I declare where it came from, he said they wont ask too many questions as long as my intention is to declare and pay anything I have to.
Then he is delusional, we have already seen bank accounts getting frozen and so on, so I hope you have all the proof on your side to prove that the bitcoins you earned are legal. Please let us know whenever you cash out signature campaign earnings into euros, I want to know how it went with details. I believe they will ask and they will ask in detail, where it all came from, so again, get all of your stuff together before cashing out, then do so and report here back.