How about this little theory:
A hacker has commited a grand bitcoin theft a while ago and is now trying to clear the trails to these Bitcoins through a puzzle. The one who will win the grand prize is the hacker himself, who can now hide behind the claim he has won the Bitcoins with his sheer knowledge.
Edit: Maybe the victims can ask for a subpoena to check a certain Binance account? Maybe there is another account at Polo, that might be interesting for LE.
A few addons to my theory:
(OP's wallet from 04-04-2018 until now)
https://www.blockchain.com/btc/address/3KCEGC4GaATQCnzogrpSDRJLKAjWvgudmW (OP's wallet from 04-04-2018 until now)
https://www.blockchain.com/btc/address/13hLyfRHg7p9Zw7WHToRT67JR1HR92Mvxw (OP's wallet until 04-04-2018)
A hacker has commited a grand bitcoin theft a while ago and is now trying to clear the trails to these Bitcoins through a puzzle. The one who will win the grand prize is the hacker himself, who can now hide behind the claim he has won the Bitcoins with his sheer knowledge.
Edit: Maybe the victims can ask for a subpoena to check a certain Binance account? Maybe there is another account at Polo, that might be interesting for LE.
A few addons to my theory:
(OP's wallet from 04-04-2018 until now)
https://www.blockchain.com/btc/address/3KCEGC4GaATQCnzogrpSDRJLKAjWvgudmW (OP's wallet from 04-04-2018 until now)
https://www.blockchain.com/btc/address/13hLyfRHg7p9Zw7WHToRT67JR1HR92Mvxw (OP's wallet until 04-04-2018)
Just quoting myself. Well played, OP.
Ok, so you still think it was just money laundering?
I hope the winner makes a video on the solution. Would be glad to learn 
I guess for privacy and tax reasons.. we might never really hear of the winner....!
I think that someone who was able to solve the puzzle know how to hide his identity
Congratulations to the winner
Let us know the solution.
I think I had solved 60-70% of the puzzle.
Coral, Item, Half, Road, Cry, Gun, Dumb - I guess these were the 7 words of the BIP39 Mnemonic
Loop, man, foil, baby, bag, zero - of these 5 words could be the remaining
I hope the pip or the winner makes the final solution public (if not the method used).
Awaiting the next puzzle:)
Let us know the solution.
I think I had solved 60-70% of the puzzle.
Coral, Item, Half, Road, Cry, Gun, Dumb - I guess these were the 7 words of the BIP39 Mnemonic
Loop, man, foil, baby, bag, zero - of these 5 words could be the remaining
I hope the pip or the winner makes the final solution public (if not the method used).
Awaiting the next puzzle:)
Oh man, any idea how many more words you needed?
Congrats on being so close
if you look at adress its getting split in 25 btc seperates wallets. hmmmmmm 
Maybe a team solved the puzzle and they're splitting the reward.
Or the winner doesn't fell secure storing whole amount in one wallet.
I see that people are enthusiastic about donating. I can suggest that in the future you leave a btc address for donations from people. Then when it's full enough, put together another puzzle to solve. So it helps keep the community entertained by solving puzzles, so I see this keeps everyone at ease. Thank you very much
Yeah, for sure, people will donate tens of bitcoins for puzzles, OK
