[nwiswell]

I think "very easy" is relative. How do you get the whole world to agree to participate in the blacklist (or even to be aware of it)? If you don't, then obviously it will remain possible to tumble/launder the coins.

By comparison, if PayPal decides to freeze your account, that's it, the end, those funds are frozen unless and until you successfully run the corporate supplication gauntlet.

[easrng]

You don't need the whole world, just the exchanges. And and some ERC20 tokens can have addresses frozen by a central authority (ex. USDC and Circle, USDT and Tether, etc) which is why the attacker immediately sold the USDC for ETH on 1inch and Uniswap.

[nwiswell]

> You don't need the whole world, just the exchanges.

Then you just tumble the coins and head to an exchange.

[netheril96]

> You don't need the whole world, just the exchanges.

But there are a whole world of exchanges. Anyone can make an exchange. Any one can also trade in person.

[dorgo]

I think what gp means is to tell all the exchanges (and maybe merchants) to blacklist your wallet. Not as simple and bullet proof as PayPal freezing your account but similar.