There is also another thread about Mycelium market. I don't like their new additions. For quite some time now.
Until now I didn't find (didn't look too hard either) a better mobile wallet with HW support, but I'm with you: soon we'll have to look for real for a replacement.
Quite shame...

I see the rebranding simply money thrown out of the window. People know about "Facebook's coin", no matter how it's called.
Maybe they had some discussion with other businesses with Libra name (there's at least a Libra Bank), but still "libra" is a common Latin word, hence not copyrighted.
Strange decision...

Most exchanges did disappear after big hacks, indeed.
Very few of the exchanges did actually refund their users properly, in full and in a reasonable time frame.
As already stated, one important saying in Bitcoin community is "not your keys, not your coins", another one is "be your own bank". So the safer is to withdraw and keep the coins safe.

But before withdrawing I suggest you do some reading (and maybe asking questions too) on how to keep your funds safe.
This is important because if you are careless or simply don't know what you are doing you can easily lose your coins.

Although mobile wallets are indeed suboptimal as security, if you don't download many strange apps and you are also careful which mobile wallet you download, you should be OK-ish (for daily use amounts), meaning that you will not be specifically targeted.
On the other hand web wallets are continuously targeted by phishing and the hackers do try to hack them since they're the perfect "honeypot". Also quite some web wallets may still not allow you set tx fee or may not send out a tx exactly when you send it (which matters if you buy things directly for Bitcoin).

So web wallets are well under mobile wallets. (Of course, I would not use mobile wallet in the year 2020+ without a hardware wallet attached).

I've just noticed something that causes this to be taken into account late:
tx 6d39ddf0ec4ce578bd70300c317865aa40d471e9feed3b794655f51ad5b33e9a has unconfirmed parent 794b3223490d46ad9f2e5ddb66e9964748c23241bac2d933dc2c78ee024b05fe with (low) 3.387 sat/vbyte fee


In theory we may have a CPFP but I don't know if child's tx fee is big enough for that.

It did happen in 2017. But since then the default "aging" time was increased a lot. Iirc it was from 2 days to 2 weeks.
But also, since everyone has his own mempool, some may discard some of the transactions earlier, some later.


Still, I find it interesting/strange that it was not confirmed yet. The fees are clearly lower now than 51 sat/vbyte.

I will be different from the others: I don't trust USDT. It's OK for very short term, but that's all.
Also the fact USDT is accepted by most exchanges may not help much; there's quite likely OP will go back to the same exchange.
So I advise OP check what stable coins his current exchange works with, maybe even one backed by that exchange. Also there are other types of stable coins OP may find interesting, for example those tied to Gold price; but of course, he will have to find a honest one (so even more research to be made).

I advise any coin developer wannabe to start his own coin instead of forking Bitcoin. On the long term this will be better (and more honest too).
On the other hand forking Bitcoin does have its own use: if you want 1000s of Bitcoin for testing (i.e. you cannot or don't want to fake the mBTC you can get from testnet faucet), it can be a good approach for testing.

Many (including one of the twins) are saying that the current bull run is different. And I tend to agree with them.
The institutional money is here. This is a big deal. The bull run may be longer, higher and may not end as abrupt as the previous one either.
2021 is announced to be nice, to say the least.

If you enter that private key at a new wallet creation, you'll have that wallet inside your Electrum.
As said, it is a somewhat limited wallet, since it has only one address (if you imported only one private key), but since you just want to send the funds away, it does the job.

If you sweep the private keys, as I said at point 4, this will create a transaction that will send the funds from the paper wallet to your current wallet.
Sending a transaction costs money and a transaction needs to be confirmed so you can say that you have those funds into Electrum.
This takes time, depending on the fee you paid, how busy the network (mempool) is and luck (confirmations means mined blocks which may come in the next second or maybe after 30 minutes, depending on luck; the average is at 10 minutes though).

So the time difference is between having something now and having something sent to you.

Indeed, normally the key file contains on the relevant lines pairs like:
private_key white_space key_creation_date
...and the key starts with K or L.

But Multibit used to also have the option to export the key encrypted and I don't remember the format for that. Maybe that's the case here.



OP, is there any chance you'd remember if you exported the key with password protection and maybe you remember the password too?
I'd suggest that after a backup of those files you'd install the old Multibit, import the key then export it without password protection. Then you'll be able to import into Electrum.

First of all, impressive job, well done!

Some thoughts/possible additions. If you find them helpful, use them. If you don't, no biggie  

* I am surprised that Bitsler is not in the list for crypto gambling
* For portfolio tracking WorldCoinIndex also does the job nicely
* Ledger wallet is great only as hardware device, their wallet software could be much better (for example many newbies come to this forum asking about missing funds because simply the wallet seems to have some odd syncing issues).

Some thoughts:

1. Watch only wallet is a wallet you cannot spend from. From what you wrote that may not be clear.
2. If you create a wallet in Electrum from address it'll be watch only; if you create it from private key it will be full address and you can spend.
3. If you just want to send to exchange you most probably don't care about change addresses and such.
4. Sweeping the paper wallet, afaik, means that you already have a wallet you are working from and it creates a transaction from your paper wallet to the wallet you are in "now"; although it could be easier to use (scan qr) it means extra costs (the network fee for the extra tx).
5. If your paper wallet has the private key visible and unencrypted and you think you have the patience to type the entire private key into Electrum, that would be the fastest way to access the coins.
6. Make sure the Electrum you use is downloaded from electrum.org and the signature is verified (https://bitcoinelectrum.com/how-to-verify-your-electrum-download/ )
7. If you import the private key you'll probably have to tell Electrum what type of address is the private key for. This means you may have to type something before the private key, the [Info] button should tell you what. (for address starting with 3 you'll need p2wpkh-p2sh: or, for bc1 you'll need p2wpkh:; for starting with 1 it's p2pkh: )
8. Since my explanations may not be the best, it could be useful to also read https://bitcoinelectrum.com/importing-your-private-keys-into-electrum/
9. Keep in mind that when you'll send away the funds to exchange you'll have to pay the network fee; you better inform yourself about it.

I agree with both of you.
Normally you can't retire with only $1 million indeed. I've read at some point that a good minimum is $3 million. But if Bitcoin reaches $1M, the $3M is not that far, actually in a/the following market cycle it'll be reached.

As a day trader imho the shorting would have meant trading for something stable, clearly not for altcoins "with potential", then keeping an eye on the market and see for the new short-term trend.
However, we have a new ATH and as I said, it's "the worse moment for shilling altcoins".

You would have won if Bitcoin would keep falling from now on.
But when Bitcoin will get to higher price than $19864 (or whatever will be the high of today) somebody else will tell you that you've lost 

---

And on the meme topic, something seems to be missing, so here we are:

Really? No. When Bitcoin is close to the point of breaking out best is to move the coins into Bitcoin and wait a little more.
I don't expect all those walls stay there, although some may sell again big at nearly 20k. But since Bitcoin has recovered that in 5 days, the upward pressure is .. big.
All in all is by far the worse moment for shilling altcoins.

(Corrected after re-reading your message)
I see them similar to what you wrote. Indeed, encrypting should involve a transformation that will allow through decryption to restore the original message. I don't know if this is what OP wants, hence I didn't try to answer to that part (although I know that BitCrypt does this).

And since OP also said he is interested about signing and verifying messages in a simple way, I tried to cover that part.

Omg     Sorry that I find it funny to happen exactly to you...
I don't even remember if/when I've got phishing mail from them. I get such mails from time to time, but I get much more targeting PayPal (which, funny enough, I use at an average of less than once per year). But I mark them as spam and going forward...

About Ledger, they do have issues indeed, some care more about them, some less. As I already said, the actual device is OK, imho, although all their other services seem to go from bad to worse.
This means that some may be interested on the coupon code. And if they don't, no biggie.


I think that your (recent?) grudge against Ledger may consume you more than harm them.
And sadly for you, people (consumers) tend to have only very short term memory, so in a couple your energy will be depleted and their buyers will not care.
I don't care at all about Ledger's sales, well being and such (in case somebody starts some wild interpretations), I just wanted to say in more words: take care and save your energy.

Although I didn't use it, NBitcoin seems to actually be able to sign/verify message.
If you look in the second example from here: https://csharp.hotexamples.com/examples/-/NBitcoin.Crypto/-/php-nbitcoin.crypto-class-examples.html
It has near the end 2 lines that should be of interest: