I'm curious, has anybody outside of the pool randomly found a priv key with a non-zero balance associated with it?
I saw the list of "trophies" section on the website, and at the time of the last recorded discovery of 0.54 BTC, that was about an $8,000 haul (assuming whoever found it kept the entire amount). Not bad.
To my knowledge the only keys with non-zero where the few puzzle wallets that bitcrack found ahead of LBC. At current prices that same .54 BTC would be roughly $1500 USD. Not bad haul, but I'd definitely wait for the market to go back up before cashing out

Greetings, newbie here.
Who can explain how does the program/server check address balances after generating?
LBC has a list of all wallets with non-zero balance that it checks against. Through some advanced mathematics LBC is able to check this list of several million addresses all at once at only a slightly slower rate than if it checked against a single address.
LBC IS DOWN
? I do not understand - is the project working or is it being deleted?
LBC is not down and not being deleted any time soon, currently collectively hashing at 268.62 Mkeys/sec. If you are having problems setting it up on your machine feel free to ask questions here or on the discord server.