carshodev
today at 9:46 PM
Unblockable yes, untrackable no. Also portable is the main ability of crypto.
The reason that this could be found out is because every transaction is recorded so it can be linked back through the chain once it hits another exchange that is KYC'd.
If I have a gold watch and I wear it through the airport go to turkey melt it down and give it to an iranian, then buy a fake watch and return home noone will every know that this transaction took place.
This would be 100% impossible to track in any reasonable manner. If I went to an exchange transfered bitcoin to a person then they spent this bitcoin in a way that linked it to their identity this would provide a full audit trail that would link me to that person. Also this audit trail could NEVER be removed or altered.
There are ways to use bitcoin in an untracable manner just like gold, you can have a cold wallet and transfer the keys to someone else. The cold wallet password could be only memorized and thus have no physical trace and no transaction record could take place whatsoever, but this is the OPPOSITE of what an exchange does.
Also cash and bank systems are not as resistant, they can fail, be hacked, be altered, people can use shell companies and fake identities.
Some cryptos like monero try and hide the transaction path but even this crypto has some vulnerabilities making linking it to people possible in some cases.