So BTC.com(the miner) has responded to my request and asked me to send a transaction from one of the address I used in this tx: https://blockchain.info/tx/03426b7fff1fd3a7031ffb4ec6bca1ce54e9837b0768b1f55e405e8ed944b453 to verify that I am indeed the one actually sent it

now the problem is I use blockchain.info and the address changes every time I make a payment, is there anyway I could prove to them that it is me who sent it?