There are companies that specialize in tracking them in depth, and they can likely even track them through "mixers", which basically is you sending bitcoin into a large pot of coins and on the other side you get bits of coins from all over the place which supposedly hides your identity. It has ALWAYS been possible to fully track this, it's just a big pain in the ass and probably pretty expensive. That's 'security through obscurity' which is really no security at all if someone cares enough to spend the resources to track you. What you want is mathematically sound security.
Bitcoin is not at all what you want to be using if what you're doing needs to be private, it's literally a completely public blockchain.
I heard the US gov has a tool to track transactions and placed new guidelines in being taxed for investing in the digital currency market.
You have a tool to track transactions too. They're public. Edit: here you go - https://www.blockchain.com/explorer
There are companies that specialize in tracking them in depth, and they can likely even track them through "mixers", which basically is you sending bitcoin into a large pot of coins and on the other side you get bits of coins from all over the place which supposedly hides your identity. It has ALWAYS been possible to fully track this, it's just a big pain in the ass and probably pretty expensive. That's 'security through obscurity' which is really no security at all if someone cares enough to spend the resources to track you. What you want is mathematically sound security. Bitcoin is not at all what you want to be using if what you're doing needs to be private, it's literally a completely public blockchain.