There are services that can use small amount of money to make you prove that you are human or that you are serious. I have even seen some services that will send you back the money.
A good example is this forum that blacklist some IPs. Anyone that uses the IP to create account on this forum will pay evil fee. Do not be surprised if the evil fee is as low as 40 sats at times.
I don't understand what you're talking about? Are you sure you mean cryptocurrency sites with serious techies. Who know everything about transactions? Because demanding a transfer of 40 sats that is technically impossible to send - says that the one who demands it is an absolutely incompetent schoolboy
Proofs that dust sending is impossible:
These respected users said that sending such dust is impossible and I believe them:
Bitcoin have something called dust limit. It prevent many wallet from letting sending such small amount to other address and some nodes wouldn't relay such transaction.
No, most of the nodes will not accept such transaction because it would be seen as dust.
No wallet will allow this.
Before people answer you, I think you should tell us why you are sending such a ridiculously low amount (≈$0.044).
Here I completely agree with you, this is an absolutely
ridiculously stupid low amount.I see this as a joke, to be honest, it doesn't make any sense from every angle.
Here I completely agree with you again. If a service extorts dust that is impossible to send, then it is better to spit on this service, which is what I will do and I recommend it to everyone who also will encounters the same dust extortion. Such dust sending demands looks more like either
someone's joke or trollingAt least you need to send an amount higher than them before the transaction can be broadcasted. They are a very low amount of money that is not up to $1.
I'd rather not send anything to that dust extorting service. They don't deserve even a cent.
You just opened my eyes to the truth. If a service extorts such ridiculous things, it means it is a going down crap
Thanks to everyone for the answers and saved me from sending the depot to a service that does not deserve it. 0.0000004 BTC is unsendable sum. These are some kind of ridiculous trolls not a service. (Very respectable top site among crypto entusiasts. And these trolls own a top crypto site and don't even know that it's technically impossible to send such dust which speaks about the extreme incompetence of these
schoolchildrenschoolboys)
EarnOnVictor, I liked your answer, if the merit appears, you will be the first to receive them