If you have access to the email address used for creating your wallet, search for blockchain in your email inbox. Your wallet ID can be found at bottom of any email they have sent to you.
Just note that even if you can find the wallet ID, you need the password too. Without that you can't access your wallet.

I start the answer to your question with bitcoin.
Once a transaction is confirmed (I mean it gets 1 confirmation), it's almost secure and it's very unlikely that someone can change it. But that's not 100% secure.
It's possible that your transaction never receive next confirmations. Because, there is no guarantee that next block will be added to the chain including your transaction. Your transaction is also vulnerable to a 51% attack.
More confirmations your transaction receives, more secure it becomes.

Every coin has a different total hash power and the cost to implement a 51% attack is different for each of them. That's why exchanges wait for different number of confirmations.
Also, some coins like BNB use the POS system and that's probably why FTX is accepting BNB transactions with a single confirmation.
Note that there is no exact number as number of required confirmations and that depends on risk acceptance of the exchange.

No, it doesn't depend on where you have sent the coins from. Usually, there is no way to know where the fund has been sent from at all.

You probably mean deposit. Yes.
As said, the cost for implementing a 51% attack for different coins are different.
For example, a bitcoin transaction with 1 confirmation is much more secure than a bitcoin cash transaction with 10 (or maybe even more) confirmations.

Again, deposit not withdraw.
The cost of implementing a 51% attack may change over the time. But that's not significant and exchanges usually consider a fixed number of confirmations.  
So, the answer is NO.

As said, it depends on risk acceptance of the recipient. Number of required confirmations may vary in different exchanges.
Note that if you send bitcoin to me and I trust you enough, I can even accept an unconfirmed transaction.

This can happen only if you deal with a BIP39 seed phrase.
If the wallet has been originally generated by electrum, it's not possible to generate addresses with a different script type at all. Once you enter a seed phrase that has been generated by electrum, it automatically displays the seed type and you can't change that.

The post in question has been edited. (Note that you don't see the "last edit ..." message, because it has been edited in less than 10 minutes after its creation.)
As ninjastic.space searches in unedited versions of the posts and you are searching for the edited content, it can't find the post you are looking for.

To add to Charles-Tim's post:

In a M of N multi-signature wallet, M-N master public keys are also needed.
Let's say a wallet is 2 of 3. For making a transaction from this wallet, in addition to two master private keys, the public key of the third co-signer is also needed. Without that, it's not possible to setup the wallet.

It depends on how you implement it and how you make transactions.
If the two master private keys (or the corresponding seed phrases) always stay at separate devices, it can increase your security.

Let's say you have a 2 of 2 multi-signature wallet. The master private key A is kept on device A and the master private key B is kept on device B.
If you enter the master private key A on device B when making a transaction, it would defeat the purpose of the wallet. The two co-singers should sign the transaction in separate devices.

Also note that if you lose one of the master private keys, you will lose the access to the fund. So, I recommend you to consider a 2 of 3 multi-signature wallet too. In this way, you can keep three master private keys in three different places and you will still have access to the fund if you lose one of them for any reason.

In the case the wallet generated by electrum has been already funded, you can import it into bluewallet using its seed phrase.
It should be mentioned that, if there is no transaction in the wallet generated by electrum, it can't be imported into bluewallet.

No, that's impossible.

The only thing I can recommend you is to try to find the seed phrase. You may have saved or written that somewhere.
Also note that you have definitely enabled 2FA when creating the wallet. You may be able to find it on an old mobile phone.

Otherwise, there's nothing you can do and the fund is lost forever.

So, that's an outgoing transaction from your wallet. I thought you have received that.

You sent bitcoin from 1LNq5K... to 3CCj2oCUB.... and the change was sent to bc1qt35g6.....

I haven't ever used Bread wallet. It seems that breadwallet has sent the change to a segwit address while the wallet was legacy. If that's the case, a part of your balance is now in a legacy wallet and another part is in a segwit address.

What script type you selected when importing the seed phrase into electrum?
Select "native segwit (p2wpkh) and check if you see that 0.0747595 BTC.

Edit:
If it didn't work, click here and follow the guide posted by HCP.
It seems that Breadwallet use the derivation path of m/0'/1 for change addresses.

By the way, why don't you create a new electrum wallet and make a transaction from breadwallet to electrum?

To answer to this question, there is no need to mathematical calculations at all. The answer is the same for any public key.
Any public key can be generated by 2^96 private keys on average. Therefore, any known public key can be generated by numerous odd private keys and numerous even private keys.  

Sorry, there is exactly 1 private key for any public key.

That's not three transactions. That's a single transaction with 1 input and 2 outputs.
Assuming 3CCj2oCUB..... belongs to the wallet you imported into electrum, you should see the receiving amount of 0.025 BTC in your transaction history.
What's the problem now? Is electrum showing a different amount?

No, none of the three master public keys you have can help you to make a transaction.
As said, your wallet is actually a 2 of 3 multi-signature wallet. This means that for making any transaction two private keys are needed.

Your wallet includes only 1 master private key and since you don't have the seed phrase, any transaction you want to make has to be signed by trustedcoin.
Just wait for trustedcoin's response. There's nothing else you can do, unless you manage to find the seed phrase or the 2FA authenticator.  

Contact userhelp@trustedcoin.com.

In their "contact us" page, they say that they will ignore such requests.
But as already said, if you have neither the seed phrase nor the 2FA key, that's the only thing you can do. Try your luck. They  have been helpful in some cases.

By the way, are you sure that you haven't saved your seed phrase or written that somewhere? Are you sure that you don't have trustedcoin 2FA authenticator on an old phone?

Your wallet is actually a 2 of 3 multi-signature wallet. For making any transaction, 2 private keys are needed. Your wallet file includes only 1 private key.
If you have neither the seed phrase nor the 2FA code, the only thing you can do to is to contact trustedcoin and ask them to recover the 2FA.
Contact them with the email address you used when creating the wallet.

They may recover the 2FA, but they won't give the private key.

Reducing the difficulty in a way the average block time decreases to less than 10 minutes.

Assume that we decrease the average block time to 2 minutus. The difficulty will increase with the increase in the total hashrate, but the average block time will still remain 2 minutes.This will lead to a less congested network and lower transaction fees.

Again, I'm not saying this is a good solution. It would make the network insecure. We don't need it all.

I feel my wording was not good.
With reducing the difficulty, we don't really decrease the total energy consumption. Because all miners are still working and the total hash rate of the network wouldn't change. As you mentioned, for decreasing the energy consumption, we need more efficient miners.

To make my previous statement more accurate:
For decreasing the energy needed for mining a block, one way is to decrease the difficulty and the problem is that it can lead to a 51% attack.


OP suggested to make the amount of power used to mine blocks lower, so miners are encouraged to mine blocks with low transaction fees.
My point was that to do so, we would need a hard fork decreasing the difficulty. I know how this can make the network insecure and I'm not saying that's a good solution.
 
Making more efficient miners is another solution. But that's responsibility of ASIC manufacturers, not bitcoin developers.

As already said by others, this will never happen.
If you want a coin with 2x supply, that's no longer bitcoin. That would be an altcoin which can be a fork of bitcoin.

Again, we would need a hard fork. The new coin would be an altcoin with a very insecure network.
To decrease the energy consumption, we should reduce the difficulty. In the case difficulty is reduced much, it would be easy to perform a 51% attack.

Passphrase is added to your seed phrase and make your wallet generate completely different addresses. Passphrase can be any combination of words and characters.
Password is used for encrypting your wallet file locally.

When you generate a wallet on electrum, it gives you a seed phrase including 12 words. The seed phrase can be extended with a passphrase (extra words or characters).
To add a passphrase, you should click on "options" and check "extend this seed with custom words".

In the case you want to recover your wallet using your seed phrase, you need your passphrase (if there's any) too. You don't need your password when recovering the wallet using the seed phrase.

Yes. The seed phrase includes 12 words. If you have it, there's nothing to worry about. It's enough for recovering your wallet.
In the case the new OS doesn't support electrum, you can import the seed phrase on another device and access your fund.

Keep the wallet file.
It can be on an external hard drive or any other place.


If you have the seed phrase, you can recover your wallet using electrum on any device.
If your wallet has been funded, you can use bluewallet too.

I don't really understand what's the problem.
For example, the first image shows that you have played the dice game on 20:40:30 three times. What's the problem?

Anyway, freebitco have their own thread on this forum.
If you have any question, you can ask there. Click here to visit their topic.