If its a human right, why would the police or a financial institution not allow him to possess such funds in such a situation without proving its origin?
You're a fucking moron, and this sentence proves it. It's the authorities responsibility to provide proof the funds were obtained nefariously. You're lowering the average IQ of the forum, and I feel stupider for reading your trolling bullshit. Now, please get the fuck out of here.
I checked the PGP.
What do you mean by this? You claim you don't have the letter of guarantee, but you have to download it before you can check if for a valid signature. Did you or did you not check the signature of the letter?
MCM gives the user a very powerful tool in form of Letter of Guarantee. It is indisputable.
The only "power" the letter offers is proof that the address belongs to the anonymous service. It doesn't guarantee that you aren't a scammer.
There is no log. Not only because the logs are not stored or the information were deleted. There is no log because the transaction was never tracked by MCM. MCM tracks only the transactions belonging to its own addresses.
Quit beating around the bush, nobody cares about the "ownership" of the address. Maybe it belongs to MCM, or maybe it belongs to you personally. Stop trying to hide behind the semantics. The question is a simple one with a "yes" or "no" answer: Did you or did you not receive a transaction for 13
BTC on or around the date and time the OP's txid?
Had the funds landed in one of MCMs addresses and were not processed for any reason, I would contact you asking for a message signed with sender address describing where the funds should be sent. They have not.
If this were to have happened, how you would you have contacted the user? Contact information isn't requested by your service.
The rest of the story matches what would have happened if you sent the funds to a malicious website. You should ALWAYS verify the LoG - not only download but also verify against the PGP key. The malicious websites oftentimes give you the LoG with the deposit address changed. Looks the same and is still signed by MCM, but the signature is invalid.
Wait, what? That's contradictory. How could it be signed by your service with an invalid signature? This sounds like a convenient excuse to deflect the blame.
This is one of the weirdest scam accusations I've seen here. Both the OP and MyCryptoMixer seem to contradict themselves, and getting a strait answer from either seems impossible.