Cloud mining: how it works and how to spot a scam

Cloud mining means renting hashrate in someone else's mining farm instead of buying a machine. You pay up front, the provider mines, and you receive a share of the coins minus electricity and maintenance. Some providers are real businesses; many more are Ponzi schemes with a mining-themed website. Here is how cloud mining works, how to calculate whether a contract can pay off, and the signs of a scam.

How cloud mining works

• You buy a contract for a certain hashrate, for example 10 TH/s for a year.
• The provider runs the machines, pays for power and repairs, and charges a daily maintenance fee.
• Each day you receive the coins your share of hashrate mined, minus the fee.
• When difficulty rises or the coin price falls, your payouts shrink, but the fees often stay the same.

Can a contract pay off?

Before buying, estimate the output of the same hashrate in the mining calculator: enter the contract's TH/s, set electricity to the provider's maintenance fee, and compare the yearly result with the contract price. Remember that difficulty usually rises, so later months earn less than the first. If the contract only pays off when Bitcoin's price doubles, you are betting on price, not earning from mining. Often buying the coin directly would have been cheaper.

A real provider can never pay more than the hashrate actually produces. If advertised returns beat what the calculator shows for the same hashrate, the money comes from new customers, not from mining.

Signs of a cloud mining scam

• Fixed daily returns such as "2% per day" regardless of price and difficulty.
• Referral levels that pay you for bringing in other investors.
• No verifiable farm: no company details, no address, no proof the hashrate exists in a public pool.
• Withdrawal delays or new fees when you try to cash out.
• Pressure: limited-time bonuses for depositing more.
• Bonus balance on signup that can only be withdrawn after you deposit.

Many such schemes pay the first withdrawals to look real, then disappear with the deposits.

"Free cloud mining" sites

Sites that let you "mine for free" in the cloud do not give anyone hashrate. They show a growing balance to collect your attention, ads or a deposit to "upgrade your miner". If a withdrawal needs a deposit, it is not free. More in free crypto mining.

Alternatives

• Buy the coin directly if you believe in it, without paying maintenance fees.
• Own hardware if you have cheap electricity and space; see what is crypto mining.
• A mining game if you want the experience without money at risk. TotalHash is free and runs inside Telegram: your phone computes SHA-256 and closes blocks for an in-game token, and tasks pay small amounts of USD₮ and GRAM.

Quick answers

Is cloud mining legit?

Some providers are real, but many are Ponzi schemes. A real provider can never pay more than the rented hashrate produces after fees.

Is cloud mining profitable?

Rarely. Rising difficulty and fixed maintenance fees often make contracts pay less than buying the coin directly.

How do I spot a cloud mining scam?

Fixed daily returns, referral levels, no verifiable farm, withdrawal delays and bonuses that require a deposit.

Is free cloud mining real?

No. Free cloud mining sites show a growing balance but usually require a deposit or never pay.