An attacker can forge fake block.
Yes, but an invalid block would be rejected by all other participants that see it, and not relayed. Thus, such a block has little to no impact.
This is great but what happens if my transaction is in the fake block? Let’s suppose i am buying a car. Should i wait 6 blocks to be generated to be sure? But I have to wait one ...
what happens if my transaction is in the fake block?
It is also in the memory pool (mempool) of pending transactions at other nodes run by more honest people and will be included in a new and valid block in the normal way.
Let’s suppose I am buying a Tesla car. Should I wait 6 blocks to be generated to be sure? But I have to wait 1 hour!
There are ...
the coin is gone from the sending wallet yet never arrived in the receiving wallet
This isn't really a thing - The transaction is confirmed, which means the coins did move. In fact, the 0.0215682 sent has already been spent (I am assuming that is the payment amount, as the other output goes to a p2pkh address, which seems likely for a change output), which ...
BITCOIN SENT CONFIRMED BUT I NEVER RECIEVED BEEN 2 DAYS
In reality Bitcoins are not actually sent or received. Those are not two separate events. They both really refer to the same event. If the Blockchain shows unspent bitcoins (unspent transaction outputs) associated with an address you control, you have "received" them - regardless of what your wallet ...
If your wallet is a custodial wallet where the private keys are managed by the provider, your only recourse is to contact the provider.
If your wallet is a non-custodial wallet where you manage the private-keys yourself, there are several possibilities
check that your wallet is fully synchronised. How you do this depends on which wallet you use.
check the ...
You are right, the only ones who should have access to that address is CoinsBit.io.
If they claim they are unable to recover the coins, there are only three possible scenarios:
They have lost all copies of the private keys, or the root key used to derive them - this would be extremely irresponsible of any exchange, but does not appear to be the case here ...
the coin is gone from the sending wallet yet never arrived in the receiving wallet.
Although we often say (or write) that coins are stored in wallets, it is important to remember this is just a convenient shorthand analogy for communication between people.
In reality, Bitcoins don't exist in wallets, they are not stored in wallets and are not moved in and ...
it seems like a wallet address was generated for her
This seems most likely to me. An ATM should not allow the destination/receiving address to be empty or to contain something that is not a valid bitcoin-address (e.g. a phone number would be rejected)
A phone number might be requested for an online custodial wallet service with two-factor authentication (...
I have not received the coins yet.
You cannot receive LTC through the BTC network.
how can i recover it back to my luno BTC wallet.
You cannot receive LTC into a BTC wallet. You generally cannot reverse cryptocurrency transactions.
I am not familiar with Luno. If Luno is a multicurrency wallet that supports both BTC and LTC, you may be able to use it ...