Origin

Owned by russian entities, these sites has been up since as early as 2020 perhaps earlier due to their renewal of sites all the way to 2023 in present-time amassing quite a regular traffic by unaware victims who continues to visit the websites in hopes to earn and new users that just entered the crypto underdog world to look for a pretty penny.
They also goes by different names but with similar concept and aesthetics like "Coin Farm" and "Coin Birds".
If you are user of websites with advertising option you will eventually see similar or this website often advertised either by the nefarious practitioners themselves or unaware users chasing after referrals' money.
How they avoid being detected as scam
This albeit looks simple and one most people often overlook. Is actually quite detailed in operation. They avoid bad reviews to preserve their reputation and legitimacy by making duplicates or renewing the same site once one of their duplicates has run it's course. Appearing legitimate with fake withdrawals and clean original aesthetics and providing multiple deposit and withdrawal options.

Fake withdrawals mixed with actual victims
How They Operate
Secondly, they do "pay" their users why in the withdrawal page there are real users mixed in or it could be worse, that they are all real users. I say "pay" very loosely because you will always be spending more money than what you can actually withdraw.
When you first want to withdraw you will see this "innocent notice" saying that they are avoiding bots and therefore, demands you to deposit 0.50 USD at least to make sure you aren't one. In other words. They will always profit at least 0.50 USD from unaware victims. There is a second layer to this though.

This notice does not explains to you the gem system that they are using which is in a very hush-hush manner making the users believe it is a one-time payment only.
Using a gem system which you can only get these gems by depositing a certain amount of your own cash. It scales with the amount of money you wish to withdraw so you will always need to deposit more than what you can actually withdraw.

Using this "You can only get your withdrawal after you deposit" scammer often uses but with a twist
For example, I have 20 dollars in total withdrawable. I have been a free user since 2020 and did not spend a single dime on it to see it's legitimacy and the amount of gem that I require is 1965. For me to withdraw this 20 dollars. I will need to spend about 55 dollars. Which means I would lose 35 dollars in total. So you will always lose 170% of your profit in actuality.

Losing 55 dollars to gain 20 dollars
However, since they let you withdraw your 20 dollars. They can simply refute to the ones who call them scammer as liars since they do pay their victims & the victims usually can't explain how their practice actually works henceforth ignored. It is also quite hard to find their reviews in official review site like trustpilot.com simply because they often renew their websites, rebuke the claim of the users and make duplicates to send users in a merry-go-round looking for their review.
Final words

Putting technicalities aside for a moment, there are such thing as "dirty money" in this world or I personally believe in it. It is a gain that merely gives you an illusion that you are prospering but in truth it takes some parts of your life away from you and will claim it in it's own time. Why although I am aware that by exposing these practices I am also teaching my readers how it works. I strongly discourage to go after profit this way because humans often forget that there are always larger forces in The Universe besides them that works behind the scene. It is highly intelligent. Aware and prefers order or justice as it is bluntly stated "The Universe prefers order over chaos".
So always try to keep your plate clean and the profit you gain may not forsake your other aspects in life.