There is an app i was led to called kzzy. You can fund your account with btc, eth, and usdt. All crypto converts to usdt once transferred to account. I am given two wallet addresses to send crypto to. An eth adress which matches usdt adress and a btc adress. When I search these addresses in a blockchain explorer I discovered more transactions than i have made. There are transactions that exist on the wallet adresses before i created the kzzy account. Also its like a futures exchange, you bet a contract high or low on btc with usdt; however i do not have any record of contract transaction #. I also cannot find any record of the contract bids place on this kzzy app on the blockchain. I Only see tranfers from my peronal wallet to the kzzy acount wallet and also gas fees.
My two questions are
-can a wallet be reused safely?
-Will the blockchain have transaction records from futures trade pool contracts?
