http://invest7xci3j4tfs37zeyxylwmhfnl2nvfbf6geos4xxeh3ejmzntfid.onion/bitcoin-miner/index28.html
However, in some alternative cryptocurrency systems, it is possible to create pre-mined coins, at no cost, with no Proof-of-Work, before the main blockchain is launched. Projects such as Ethereum called for the pre-mining of a vast majority of the circulating supply of coins, which were sold to insiders at a fraction of miners’ cost of production.