Our old good BTC of course  .

I know that everybody will tell me now that I had literally no chance to find a block when mining solo because of the difficulty but that wasn't important to me at this time because it was an experiment and I wanted to gain more knowledge about mining when using dedicated miners (never did before only mined with laptop backin 2010) and maybe to win something when doing this.

I have read a lot of times that mining solo is like playing lotto and that is why I did it. I think in reality the odds to find a block solo with the miners I had are a lot smaller as chances to win the jackpot in Lotto  . I just don't believe there is any chance to find a block in that way today. You will only support the BTC network and even if mined for 100 years, still would not find a block.

This is just not true that this is like a lottery because let me say it one more time, in my opinion, there is NO CHANCE to mine a block solo using old dedicated ASIC miners today and in the future.