Well, it might risk it if it was possible. But lost BTC can't be recovered.

You need to know what you are capable with so that you can see if there's a demand for your potential business that you wanna make. Since its really bad on your side if you want to create something related with bitcoin if there's no crypto users in your place or around you. Maybe they will find your stuff weird if that's the case.

But if there's some demands for crypto stuff on your country then I guess you could able to start a lending business which people can borrow bitcoin to you and they pay also bitcoin in return with interest.

Also cash in cash out bitcoin business since for sure that there would be a lot of people will be interested to top up or cash out bitcoin especially if they know that you are offering more convenient way for them to take out their bitcoin then get direct fiat without any hassle.

That's a possibility, the second part of the error about "not being able to bump" lowers that possibility though.
Because it means that he's used the entire balance, sending a lower value (3 decimal places lower) than his intended amount should produce change.
With change, the second warning shouldn't appear.

Let's say that he's intended to send 0.01BTC but typed (0.01mBTC) 0.00001BTC instead,
if he got a single UTXO that can cover his intended amount (higher than 0.01BTC), using it as input in that txn will create a change so the second warning shouldn't appear.
if he got multiple UTXO that can cover his intended amount, only the ones needed to pay 0.00001BTC are spent leaving some available UTXO so the second warning shouldn't appear either.

The chance that it's the case is if the input's excess amount is used as fee which is "15.61% of the amount" sent.
Maybe in specific cases where the owner thinks that his 'N mBTC' displayed balance is 'N BTC' and didn't sent a very small amount which otherwise would show higher than 15%.

I think the warning is a heads-up to users that the default options in "increase fee" menu wouldn't work.
But it wouldn't hurt to replace it with a more specific message
Maybe a shorter version of yours, like adding "..without deducing the recipient's amount" to the original message. (still long though)

You may consider making a 'Pull Request' that edits the warning into something similar to the example, if the core developers think it's necessary, they will merge it.
If not, they would post a reply regarding the reason why.

The part to edit is currently in this line: github.com/spesmilo/electrum/blob/83e14794a1e1202ecfd40f0ea779f0b91ccf2032/electrum/gui/qt/confirm_tx_dialog.py#L579

LOL I thought about something like that... picture of Pooh perhaps. But that's too much work. I just blocked it because of course it didn't respect robots.txt rules even though it fetched the file.

I don't know of any scam accusation against this exchange, what i know is that they hire shillers to shill their service in this forum and this has affected their reputation in the forum. Nevertheless, even if an exchange is free from any accusation and it seems they have a clean reputation, you shouldn't still store your funds in there, centralized exchanges can confiscate your funds anytime, or get hacked anytime too.

It'd be good to imagine Payjoin as a private payment to another person, and Coinjoin as a private payment to yourself. In the former, you send money elsewhere, whereas in the latter, you send them to yourself.

The problem with Payjoins, as far as I understand, is interactivity. When paying for goods and services, it is not practical to interact with the merchant to make your coins more private. That rises the cost of the merchant for a service they might not be willing to provide.

Saw some comments of users looking for R,S,Z Signatures and public key sample for research purposes.

So i created a script where you can have a little more details than you need. Its a simple script so you can do your various research that you wish on ECDSA Secp256k1 signatures.

you can download it here. https://github.com/KrashKrash/ecdsa-rsz-signature



just a little more info for you who are just starting out to do the research, some call it z, some call it message(hash) some just call it h. but it means the same thing.

message or m  = the original message
H(m) or h or z = the hash of the message
H(m), h or z depending on who you talk to, is the hash of the message. same meaning.

I just want to have this information out here so you don't waste your time thinking what is h and what is z. Good luck on your research.

I came to know about Bitcoin in 2011 when no one knew about it in a third world country. This happened cause one of my friend was at that time working in US and through Yahoo chat I came to know about an internet currency.

In 2015 another good friend of mine wanted me to invest in Bitcoin and Ethereum. I ignored him thinking that it will be another bubble that will explode. As of to date it has not exploded and Bitcoin is still a smooth sailor, sailing though the big waves.

The next time I heard about Bitcoin was when it was discussed in 2017 in the Big Bang Theory. I do not remember the episode but it was epic. After that episode I was desperate to be part of this revolution and I started doing some research and found out about this forum.

At first I used those lucrative altcoin bounties to get rewarded and then convert my altcoins to Satoshi. It was a great experience and I still remember how much efforts and time it took me to get to where I am now in the forum and with my wallet.
 

Take note that the 'power of fiat hasn't decreased in El Salvador', and BTC doesn't have to be a legal tender for people to use it. However, i get you, because if it is a legal tender, then all merchants are obliged to accept it. BTC gives freedom, no doubt about it, and i am totally pro BTC, but i just don't believe that we are about to see BTC dominating over fiat in terms of a payment method, it won't happen, BTC will remain an alternative. But we can leave it at this right now, friend.

Exactly, you may know about something, but lack the right  informations or understanding about it, which shows that you're ignorant about it and that was the point I was trying to make. Well the good thing is that we're opportuned to be in this great forum where we'll get the right and more informations concerning Bitcoin.

 Well your definition about ignorance might be to your own understanding but ignorance can also mean lack of understanding about certain things, one might have heard the world Bitcoin but don't know what it's all about, it's just like those people who still think and refer to every Cryptocurrency as Bitcoin, they know the word Bitcoin  but don't know what it's all about.

 Now what suitable word would you use to describe them if not ignorance, well at the early stages when I heard about it, it was ignorance that ruined my opportunity to invest, cause I lacked understanding about what it's all about which lead my doubts and assumptions concerning it.