Thank you for yours answers🙂. Sorry i didn't see that the post where moved.
So if i follow the linked post you forwarded me . I can see the protocol to search. I was more instrugated by the hex sequence 80 before the key. Do you know when it changed or where i can find ( if it exist) documentation from the very begining? I see on the history of this forum dates on begining 2010 but the peoject started at least in 2007 and the white papee was published in october 2008. I saw program go live in begining 2009. But lets say i was not perfect. And there where an other way to "mine" . Would the protocol be the same you forwarded me in you link?
Thanks