I'm experienced in tracing BTC until scammers cash out at exchanges. If someone is a victim send me the address and I can have a look if it can be traced already.

Just analyzed your loss and as others said your funds are tracable to Binance. If Binance didn't support then you should follow other traces. I found a couple of traces to other exchanges. Below is one path to kraken.com which is most probably better in KYC and more supportive to police requests. I didn't follow your coins directly, I analysed what other addresses have the same owner and if they end up at an exchange. This increases the chances usually by far but cannot be done manually.

Your scammer is a kraken.com client, his deposit address is 3GaGnDtRcgYL1E7C2hJKXsFThj8RTua5ad. So ask the police to approach Kraken to get all information about their client (e.g. id, bank account, bitcoin withdrawal address(es), altcoin withdrawal address(es)). If one of the first two information is available then you can claim back your loss, if one of the last two then this is the starting point for a follow up analysis.

Why the Kraken client with deposit address 3GaGnDtRcgYL1E7C2hJKXsFThj8RTua5ad is most probably your scammer:

• At transaction https://www.blockchain.com/btc/tx/88511eff4ae8ac51fafddd8e20bbd03aaf308f830a2eb3ea43aa09870a5db323 the thief likely sent the bitcoin to himself from address 1MhAywXcTF78eWVttBsVawSUZyhc53DMkf to address 1Cw2TaFu25NiEDJctaLf41JRRkqqwntt6v (a Binance deposit address)
• At transaction https://www.blockchain.com/btc/tx/df7c953aa1baa8583325e8f9072cede351dcb8f761f6ecc0e96b39f7a531fd54 someone deposited from address 18APZ2f3Dmo13KQddTs8hqydEKYeWr7YiV as well bitcoin to the Binance address 1Cw2TaFu25NiEDJctaLf41JRRkqqwntt6v. Therefore the owner of address 18APZ2f3Dmo13KQddTs8hqydEKYeWr7YiV is likely the same person who owns 1MhAywXcTF78eWVttBsVawSUZyhc53DMkf (the scammer)
• At transaction https://www.blockchain.com/btc/tx/8bfefa9daed35ccde3cfd33d045e4a028c98eafa1fad70e5574b495531e9b498 bitcoin were sent from address 18APZ2f3Dmo13KQddTs8hqydEKYeWr7YiV to address 3GaGnDtRcgYL1E7C2hJKXsFThj8RTua5ad which is a deposit address of kraken (I know this because I have access to databeses with millions of known exchange addresses).

Bottom line it's likely that your scammer is depositing at Kraken under address 3GaGnDtRcgYL1E7C2hJKXsFThj8RTua5ad and Kraken is the next logical step to contact (by legal enforcement because for data privacy reasons they won't hand out their clients data to you)
 
It's likely but not 100% sure because in the intermediate steps there is the little chance that the scammer made a donation to someone else or paid someone with exactly the huge amount without a change. But in this case follow this bottom up. The kraken client should be in this case able to tell the police from whom (the scammer) he received the funds and why.

Good luck in claiming your bitcoin back!
In case you need a professional expert statement for the police or for your legal representative with detailed explanation of the evidences or if you need one of the other available paths to exchanges traced let me know.

For address bc1qz6k55y7z20azt596u80mtp0p53v9qnrj534t3k there are connections to the Binance exchange (7 hops after the thiefs initial transaction). As well there seem to be connections to Poloniex and coinpayments.net .
But to really analyse deeply and document evidences it's nothing which can be done in an hour or so.
So I'm sorry for your loss but the costs for tracing and later on legal activities would be too high in comparsion with your loss.

OMG - double in 24h. If they use it on their own with only 1 Satoshi investment then they would have more than 21m BTC in 51 days. So there doesn't exist enough bitcoin that 1 investor with 1 Satoshi property can do this for 2 months. That shows the idiocy and shows that all bots or similar services with high promises are scams. A good bot makes the programmer rich and he wouldn't need any third party investors. Even if they promise to you 15% per month then you would own 21m bitcoin after 10 years if you start with 1BTC.

Daily people ask me to support them to trace the lost BTC from those scammers until cash out at an exchange. Tracing isn't working always and even then you can have bad luck that the jurisdiction of the exchange or of the scammer isn't supporting your jurisdiction. So better stay away in the first place.

I know this is an oldie, but I'm curious if you got your BTC back, if the scammers were caught?
in 2013 the most people assumed their transactions were more or less anonymous. Obviously as well your scammer. So I see still certain chances to find the scammer (especially in case you both are in jurisdictions like Germany/Netherlands.

Someone here mentioned address 1NrrEnKJ5tsgBgSQcPjLKXXo6Q9EGrh4zM
My forensic tools tell me that the owner of this address is very likely as well the owner of 174 other addresses and that this person sent funds to his accounts at the following exchanges:

• BTC-e.com
• Bitstamp.net
• MtGox.com
• Bitpay.com

For MtGox and BTC-e it might be a bit too late but Bitstamp.net is still in business (based in Luxembourg and UK) and Bitpay.com as well (based in US).
So in case police closed this and you didn't get anything back the lost BTC amount at today rates (around $600k) would be worth giving it a new try.

If you want to direct message me I can give you more details, as well in case you need an analysis for other BTC addresses.
Good luck!

The scammers will of course not return the Bitcoin voluntarily.

But there is a possible chance to get it back. Often scammers are not carefully enough when cashing out at an exchange. Between your transaction to the scammers and their potential transactions to an exchange their wallet might have combined the coins with other ones. Assuming they scammed hundreds of people they might make a mistake and we might be able to trace the coins to an exchange address and the exchange might have a bank account number or id. There are  millions of addresses of exchanges known nowadays so this can be matched with forensic analysis, clustering scammers addresses and transaction outputs.
The very smart scammers won't be catched, but many have no deep knowledge about Bitcoin forensics and do something wrong what can reveal their privacy now or in future. I could describe here as well when it's nearly impossible to catch them but don't want to teach scammers reading here... . The more people they scammed the higher is the chance to catch them. Always it depends on your, the scammers and maybe an exchange jurisdiction.

My suggestion:

• Review if this loss can reduce your taxes
• Send me a direct message with the transactions where you transferred 0.5 BTC twice. I feed my forensic tools with it to see if any traces already went to known exchanges. If no outcome this can be repeated, unlikely they don't move the coins earlier or later.
• We can attack the scammers to increase the chances that they reveal their identity unknowingly.
• Report it to police (then you might get something back if others catch the scammers in future)