Why is this a wrong approach?
I was talking about this part:
If no one knows, that means that it didn't happen, which means no need to declare anything.
Although my statement was more in general than about Bitcoin. In some countries, I've declared a piece of fruit at customs. Not declaring it would have given them a reason to fine me.
We talk about Bitcoin, it's virtual.
In that case, I'd apply this:
You could argue you're not bringing anything physical. Otherwise hiding it from customs would be illegal.
Bitcoin isn't in your wallet, Bitcoin is on the blockchain. You may have access to it, but that's kinda like having access to your bank account when you're abroad.
Seriously, why should I declare, why is this a bad approach?
If you
feel you should declare Bitcoin, it kinda makes you a smuggler if you don't declare it.
Maybe if I had to travel in certain countries like China, Russia, Belarus, North Korea, Iran, Sudan, I'd declare
That sounds like a great way to
pay to be forced to pay a bribe. I'm not going to any of those countries.