Yes.
Note that if you want to have a backup, as I already said, the best thing you can do is to keep the secret key Coinbase gives you in a safe place.
The "Export accounts" feature on Google Authenticator has a different purpose. But if you don't have access to your secret key anymore, I think that's the only thing you can do to have a backup.

As far as I know, No.

Yes, it can be compromised if that device is not safe.

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Edit:
I just remembered you asked exactly the same question last year and I answered you in that thread too.
May I ask you why you don't read the replies instead of asking the same questions again and again?

This depends on your risk management.
Even if you only accept fiat, there's always the possibility that someone give you fake cash or pick up the good and run away from your shop.
I don't think accepting non-RBF unconfirmed transactions is much risky if there isn't a big amount of money involved.

The best thing you can do is to keep the secret key coinbase gives you in a safe place. It will help you to recover the 2FA at any time.

You can also use the "Exports accounts" feature as a backup.
To do so, click on "3-dots: button at top right of the window. Select "Transfer accounts" and then "Export accounts".
Select any account you want to backup and tap on "Next".
After that, you will see QR code allowing you to import your account into another device in future.
Just note that, due to security reason, your phone won't allow you to take a screenshot. Take a photo from the QR code using a camera and keep it in a safe place.

Yes.

USDT is not as safe as you think.

The first problem is that there is no proof that all tokens are really backed by fiat.
The second problem is that your tokens can be frozen even on your own wallet. It's possible that the government ask the company to freeze your tokens.
I recommend you to read the topic created by mk4.
[UPDATED] PSA: Most Stablecoins Can Be Frozen, Even in Your Own Wallets

Etherscan is a explorer and help you to track transactions.
In etherscan, you can enter your ethereum address and see its transaction history.
Note that you can only see the address the fund has been sent to and there is no way to know the identity of the hacker. If your wallet is hacked, the fund is gone.

Also note that you should never connect your wallet to a website you don't know what is actually doing.
It's the first time I've heard of connecting a wallet to etherscan. I hope someone isn't trying to scam you.

I read your previous posts. but you didn't answer my question.

How can you guarantee the 10% profit in 30 days?
What will you do if the money invested by new users isn't enough for paying the old users?

If I invest 10 BTC, I should be able to withdraw 11 BTC after 30 days. What if I am the only one who have deposited to your website? Where will the 1 BTC profit come from?

I have read it.  
The website says that the profit comes from new investors. That's exactly the definition of a ponzi scheme.
I recommend you to search for "Ponzi Scheme" on google and see what you get. By definition, a ponzi scheme is a form of fraud. Even if you mention that on the website, it doesn't change anything and it's still a scam.

What will you do when the money deposited by new users isn't enough for paying existing users?

Even if you pay all the users for 600 days, it won't change anything.
All ponzi schemes are scam. They pay the users in the first days and finally run away with users money. There is no exception.

What happened: martinadoulet promoted a fake website.
Scammers Profile Link: https://bitcointalk.org/index.php?action=profile;u=2466499
Reference Link: : https://bitcointalk.org/index.php?topic=5388428 (Archived.)

martinadoulet woke up after a long time of inactivity and started to promote changenovv(dot)io which is a fake website.


Note that I am not saying changenow is a trustworthy exchange. There are several scam accusations even against the original website. ([1], [2], [3], [4], [5])
Click here to see trust page of ChangeNOW.

Yes, you can export your private keys from Armory and sweep/import them into any other wallet like electrum.


Armory gives you a root key which is not compatible with other wallets.
As already said, for importing your wallet to other wallets, you have to use your individual private keys.

The biggest benefit Armory gives you is privacy, when comparing it with SPV wallets like electrum.

Here is another user trying to scam people by asking them for donation to Ukrainians.
kanab4eg has made the same post in 12 different threads and will probably make more posts until he gets banned.

Click here to see kanab4eg's post history on Loyce.club.

You can use the links provided by TimeTeller to visit announcement threads of many altcoins/tokens.
Just note that scams are not moderated on this forum. Most of those altcoins/tokens are scam and have been created only for making the creators rich.
Always, do your own research.

From my understanding, OP stopped using freebitco, because freebitco lost trust in him, not because he lost trust in freebitco.
It seems that, OP has been banned from using freebitco because they believed that he was abusing their referral system with multiple accounts.

If I'm not wrong, you have received the USDT tokens in ethereum network and now you are talking about the transaction fee.
Am I right? If so, consider receiving the payments using other networks like TRON for the next payments. In this way, you can pay much lower fees when making a transaction.

It doesn't necessarily have to a be a hardware wallet.
Any non-custodial wallet can give you full access to your fund. It's better to use an open-source wallet on an air-gapped computer or a hardware wallet*. It can be also a paper wallet generated using a safe tool on a safe device.

I just checked MetaMask to see how it works.
Once you paste an address, it changes to 0xXXXX...XXXX. As shown in the following image, it only shows the first 4 characters and the last 4 characters.



The receiving address is shown in the same way, even on "Confirm" window.


As you see in the above image, that's the same even in their Android application.
They can show more characters and the address still fits in the recipient address field. But they don't do that.

Given that you said the address has been created in 2011, it should be legacy and it doesn't matter if you don't enter the prefix.
Whether you use that prefix or enter the private key without a prefix, electrum should generate a same address.


If you enter a private key, the wallet shouldn't be watch-only.

Note that your private key should start with K, L or 5 and should have 51 or 52 characters. *
If it has a different format, it's not a private key at all.

*There are other formats for a private key, but they are not common.

It doesn't seem to be binance. Binance doesn't support lightning network.
The options on binance are BTC, BSC, BNB and ETH.

Yes, once you enter an address, the network is automatically detected. But there's still a problem.
BSC and ETH have a same address format and it's still possible to select a wrong network. If the withdrawal is made to a custodial service, there's the chance of losing the fund.

Once a transaction is included in a block, that's no longer in the mempool and the next block will include new transactions.
So, a miner includes 4000 transactions into a block and they are removed from the mempool.
The next block will be mined (by the same miner or a different miner) and will include 4000 other transactions.

Miners can include any transaction they want.

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I also don't think that will ever happen. But let's assume it will happen.

Let's say the miners following the rules own 70% of the total hash rate. Miners who own the other 30% are located in sanctioned countries and don't join the 70%.
What do you expect to happen? Will they stop mining? Or there will be a hard fork and they will create a separate chain?

As stated by LoyceV, miners are free to select any transaction they want. So, a miner can ignore all transactions made from/to a certain address.

Let's say your address is blacklisted and now you want to make a transaction from that. You pay a high fee, so it's confirmed in the next block.
If the next block is mined by the miner which is censoring the transaction, your transaction won't be confirmed and you have to wait more, so a block is mined by another miner.

In the worst case scenario, the miners that are censoring the transactions own a significant amount of the total hash rate, ignore any transaction including blacklisted addresses and don't add any block to the chain including blacklisted addresses.

In this case, there will be two scenarios:
1. Other miners will do the same thing
2. We will have a hard fork