No way. But you can detect what coins transferred from one address and what coins transferred from another. Look for example at the first address in the network: 12c6DSiU4Rq3P4ZxziKxzrL5LmMBrzjrJX http://blockchain.info/address/12c6DSiU4Rq3P4ZxziKxzrL5LmMBrzjrJX https://blockexplorer.com/address/12c6DSiU4Rq3P4ZxziKxzrL5LmMBrzjrJX Nobody can stop people to send bitcoins to Satoshi's address, first bitcoin address in the network.