zlacker

> With a digital currency you can do a pre-sale trick, so you'll see the funds were stolen - and you then don't sell them the car in the first place.

It's a race against time. As soon as the coins are sent to a new address you can't know whether goods or services were exchanged in this process and you are thus punishing a well-intentioned seller as opposed to the thief.

>>runeks+(OP)
Isn't there a log to immediately know what wallet coins just came to to the new address? E.g. you could check the history of the new address, to see where the coins came from, before approving the transaction by first verifying it didn't come from known stolen funds?

Isn't that the prime value of blockchain - the immutable chain/record of transactions?