You are referring to this post. Right? That's post number 117 in the image I posted above.
As I said in the first reply, you made multiple posts in a row.

You should make a single post instead of making multiple posts in a row, unless the posts are large and can't fit in one post or you make the second post at least 24 hours after the first one.
I recommend you to make the posts in a single post and separate them with [hr ].

Some of your posts were deleted probably because you broke rule number 32.




Source: loyce.club

The money users can get via faucet is fixed in dollars not bitcoin. The base reward is always 0.002 dollar.
Given the minimum withdrawal limit of 30,000 satoshi, the rise in bitcoin price makes the faucet even less costly.
The current base reward is only 4 satoshi. Even if you never sleep and claim the faucet 24 times a day, it takes 312 days to reach the minimum withdrawal limit.

The network isn't very congested now.
10-15 sat/vbyte should be enough for a fast confirmation (in 1-2 blocks)

You can use mempool.space for estimation of the required fee.
Just note that the required fee is dynamic and can change over time.

The other option (the best one, in my opinion) for fee estimation is Johoe's website. But it may be a bit complicated at the first look.
Using this website, you can know the exact position of your transaction in the mempool.
Note that transactions are prioritized based on their fee/byte and every block include the top 1 MB of transactions.

If they asked you to enter the 2FA code, it clearly means that you had enabled 2FA.

 In the case you disable 2FA and enable it again, you can simply save the set-up key this time and keep it in a safe place.


When you export your account via google authenticator application, you don't need Coinbase setup key.
The QR code can be used to backup all accounts at a same time.
Note that by using "export account" feature, You actually backup the google authenticater not your coinbase account individually. It can include all the accounts you have.


If you select same account(s), you will get a same QR code.

If you have saved the setup key (or the corresponding QR code), there is nothing to worry about. That key can be used to recover your account in future.

If you haven't saved that key, you can backup the google authenticator using the "export account" feature.

To do so,
    1. Tap on menu button (the 3-dot button) at top of the screen.
    2. Select "transfer accounts".
    3. Select "Export accounts".
    4. Check your coinbase account and any other account you wish to backup.

After doing steps above, you will get two QR codes. These QR codes can be used for accessing your account(s) in future.
Note that your phone won't allow you to get screenshot due to security reasons and you will have to use another phone to take photo from the screen.  

Electrum generates the seed phrase 100% random.
If you have downloaded electrum from its official website and you are the only one who has access to your seed, there is nothing to worry about.
Just keep your seed phrase offline and in a safe place.

Go to blockchair.com and click on "Scan QR-code of an address" button.




Your bitcoin address can only be used for receiving bitcoin and checking the balance.

What wallet did you use?
How did you generate the seed?
Most of the wallets use m/44'/0'/0' as the derivation path for P2PKH addresses.

I recommend you to install electrum and import your seed without changing the derivation path.
To do so, create a new wallet, select "Standard wallet" and then "I already have a seed". Click on "Options" and check "BIP39" when importing the seed and choose legacy as the script type.
Go to "Addresses" tab and check if you can see your address there. (If "Addresses" tab is not available, click on "View" and top of the window and select "View addresses".)

If the suggestion above wasn't helpful, try blockpath.
Enter your xpub there and wait until it scans generated addresses.
Note that it's impossible to scan all possible addresses. The tool scans many of common paths.

Warning:
Download electrum only from its official website and do not forget to verify your download.

Is your wallet synced?
There's a circle at bottom left corner of the window. Is that circle green?

And are you sure that you imported the correct seed?
Go to "Addresses" tab and check if you see your address there or not.
Note that addresses shown in "Addresses" tab are in "cash" format (addresses starting with q). If your address is in legacy format (addresses starting with 1), go to "Address Converter" tab to see the other format of your address.


If "Addresses" and "Address Converter" tabs are not available, you can click on "Tools" at top of the window and make them shown.

A mirror website is usually created for reducing the traffic on the original website. In the case there is any problem with the of the original website, people can access the mirror website as the alternative to the original website.
Note that a mirror website is hosted on a completely different server and has a different URL.

I enabled new topic notifications to see how it works and received an email a few minutes ago.
What you are referring to is not a bug. That's how it should work.
I guess you haven't noticed the message displayed in notification emails.

Username: hosseinimr93
Post Count: 2187
BTC Address (must be SegWit): bc1q89wyt7en7hxr5jc4jdnxlw4vzmapp90e8jlr25

There are two extra spaces in the key you entered.
I edited the image you posted to show extra spaces.

The probability of losing a single bet with multiplier of 2 is 0.525.
The probability of losing 10 bets in a row is 0.525¹⁰.
The probability of not losing 10 bets in a row is 1 - 0.525¹⁰.
The probability of winning the bets 100 times without hitting 10 losses in a row is (1 - 0.525¹⁰)¹⁰⁰

The formula for calculating probability of winning n times without losing m times in a row is:
Probability = (1 - L^m)ⁿ

Where, L is the probability of losing a single bet.  


Yes, it was a typo. It should be 1 mBTC or 0.001 BTC, not 0.001 mBTC. Thank you.
I just edited that post.

If the base bet is 0.001 mBTC, the probability of making 0.1 BTC profit with initial balance of 1 BTC would be

(1 - 0.525²⁰)¹⁰⁰⁰⁰⁰ = 0.776 = 77.6%

As calculated above, for making 10% profit with martingale strategy, multiplier of 2 and base bet of 1 mBTC, the probability is 85.3%
If the base bet is decreased to 0.001 mBTC, the probability decreases to 77.6%
People usually (wrongly) think that by decreasing the base bet, they can increase the probability of making a certain amount of profit.

The only advantage of martingale strategy (as stated by TheQuin) is possibility of reducing the odds to less than minimum odds.

When I was making the post above, the default mempoolminfee was 1 satoshi. So I assumed that most nodes should have the transaction in their mempool and they will reject a transaction spending same inputs. I also checked the transaction in three explorers and could see that in all of them.

A question:
Let's say last week I made a transaction with 2 sat/vbyte.
Two days ago, the default mempoolminfee increased to 5 sat/vbyte and my transaction was dropped from the mempool of most nodes.
Now the mempoolminfee is 1 sat/vbyte. Shouldn't my transaction appear again?
If I double-spend the same inputs, will nodes accept my transaction? (My transaction hasn't been flagged as RBF)

If I can double-spend same inputs, because the first transaction is no longer in mempools of most nodes, then why did OP's transaction get confirmed?
I don't think OP's transaction was rebroadcast. If I remember correctly, the transaction time was 23 days ago in all three explorers I checked.

It's very unlikely that you can double-spend a non-RBF transaction successfully.
A transaction spending an input of a non-RBF transaction is rejected by nodes even if you pay a very high fee for the second transaction.

It's true that they don't charge any fee for deposits.
In fact, they (and almost all other exchanges I know) waste a lot of money for consolidation of deposits and instead charge a very high withdrawal fee.

Below is the latest transaction they made for consolidation of deposits.
9b0f29a7e27d448c8b9f83a79696c0b18bd4bdb8144ebfc082b609ccda962596

They made the transaction with 84 sat/vbyte.
This transaction could be made on the weekends with less than 10 sat/vbyte or even less. I don't think they have to hurry for consolidation of funds.

You are right. I calculated the chance of winning in both cases.
Let's say I have 1 BTC and I want to convert it to 1.1 BTC.

If I put the whole 1 BTC is a single bet with multiplier of 1.1, my chance of winning would be 86.36%.

If I use martingale method and set the base bet to 0.001 mBTC 1 mBTC, the chance of converting the 1 BTC to 1.1 BTC would be:

(1 - 0.525¹⁰)¹⁰⁰ = 0.852 = 85.3%

Thank you Betwrong for noticing the typo.

Correct.
Their current withdrawal fee for real bitcoin is 0.0005 BTC.
Below is the latest withdrawal they processed.
5d9581fda56163472b4f78bc1de9828d19a48f8aa88bba5b8edbfb48dddbf4db

The fee they paid to miners is 0.00357 BTC and there are 100 outputs.
The fee they got from users is 0.05 BTC. This is 14 times the fee they paid to miners.
The withdrawal fee could be 0.0000357 BTC instead of 0.0005 BTC.