币界网报道：WinnerMining, a cryptocurrency cloud mining platform, is offering a 150% return on investment within 30 days through its latest mining contract. The company claims users can earn passive income by purchasing hash power without managing physical mining hardware. The contract requires a minimum investment of $250 and promises daily payouts in Bitcoin. WinnerMining states it operates large-scale mining farms with renewable energy sources to ensure profitability. However, industry experts caution investors to thoroughly research such high-yield programs, as similar schemes have faced scrutiny for potential Ponzi-like structures. The platform currently supports Bitcoin mining but plans to expand to other cryptocurrencies.