Most of cryptocurrency exchange (such as LocalBitcoin & BTC-e) has always been centralized, but the difference are they didn't comply with KYC/AML, didn't ask personal information and allowed user with private connection. All anonymous (and centralized) exchange these days are scam or simply will be removed by the government soon.
don, that is the problem i am talking about, there should be no problem that requires blocking of funds. When BTC is deposited it stays as btc and that is your money regardless of where it originated or who it used to belong to.
If you don't own the private key of your Bitcoin, then you don't own it...