How can the government discover I own BTC, let's say I'm from Venezuela where crypto is banned, what they can do to discover and arrest me?
I dont know because I have never encounter something like this but we all know that every device that we use have an ip address so they know where you at and if that country is prohibiting the uses of bitcoins maybe they qill not allow bitcoins. Like for example you country will not allow you to browse those kind of website because they are banned. There are some sites that are block at the government so maybe that will hapoen to you no matter how you search it they will not appear.
Ever heard of VPNs or Virtual Private Network? In China, there's this great firewall of China (that's what they call it) and they can't even access social media sites that we can access without any hassle at all. Their government is really good at tracking down people and people are so scared of them. They don't wanna bad mouth the government on the Internet because they do know that the government will always find out that it was them who was talking badly of the government. Besides the IP address, the government can trace that you have bitcoins when you have an account to an exchange that required a KYC or an ID verification in order for you to cash out your bitcoins into money.
It is a tedious task for the government to find BTC information in the blockchain! The blockchain is a huge database, and every transaction information of the blockchain cannot be modified or deleted. You can find transaction records in the blockchain!
If you don't name your BTC, no one knows that this BTC belongs to you!
I mean, that sure is true but that's not going to be the way the government is going to find out about you because it doesn't necessarily directly link to you. The government controls the local exchange that you have. Let's face it, the government already has our information.