IP of a hacker and thief

[Cryptoin]

So I have the IP address of someone who hacked into my gmail gained access to an exchange account and then stole a significant amount of BTC.  Long story short they did not use TOR the first time they logged into my gmail and based on the public information I have acquired so far everything points to it being a residential IP address of someone who has run a node in the recent past.  Meaning it is unlikely this is a VPN, proxy, public network, etc.  Short of subpoenaing the ISP (which I am currently pursuing as well) is there any other avenue I have to obtain the identity of the owner of the IP?  I want to make sure I am aware of all my options.

[stsbrad]

The first thing I would do is a police report man.

After reading it again you said you are pursuing a subpoena. Guess that means you already did. I read it kinda fast. Sorry for your troubles man. Keep it clean and legal. Let your attorney and the authorities take care of it for you.

[stsbrad]

Most residential lines are DHCP not static so a history search will probably just waste your time. If you truly have their IP then you have a good legal foot to stand on.

[Cryptoin]

Most residential lines are DHCP not static so a history search will probably just waste your time. If you truly have their IP then you have a good legal foot to stand on.

I have already been working with multiple authorities.   The second avenue I am pursuing is a civil case.

It is a dynamic IP so it is possible the node was not run by the hacker and it just so happen the hacker got an IP of a guy who did run one from mid December through mid January but that is fairly unlikely.  From my understanding generally ISPs will not cycle an IP very often and if they do it won't happen unless you reset your router which people don't do very often.

[bitsalame]

Be sure to ask for the historical records of the IP assignation, be precise with date and time (from your dropbox logs), and request all customer details, including but not limited to name, address, phone, Mac Address, cellphone number, ip assignment times, etc...
ISPs are obligated to respond to the letter, if the request is ambiguous (Just subponating the IP, and no further details) the ISP can simply respond that such records can't be found, which is technically true.