You are WRONG. I am NOT in possession of anyone elses property. Once the Bitcoin transfer was complete, it is MY property now. You ALL know this. That is how the game goes. Stop acting like a bitch because you are jealous it didn't happen to you.
If I send you 500 BTC, it is YOUR property now. NOT mine. That is how BTC works. WE ALL know this.
Just to add to my list of relevant sections from that law page:
164.065 Theft of lost, mislaid property. A person who comes into control of property of another that the person knows or has good reason to know to have been lost, mislaid or delivered under a mistake as to the nature or amount of the property or the identity of the recipient, commits theft if, with intent to deprive the owner thereof, the person fails to take reasonable measures to restore the property to the owner. [1971 c.743 §126]