Are you saying that you sold some coins at $40,000 and after that the price dropped to $3000 ? Am I getting you correctly?
If so, I don't remember the price ever dropping from $40,000 to $3,000.
Bitcoin dropped to around 3000 dollars in December 2018 and the ATH was around $19,800 at that time. Bitcoin reached $40,000 in January 2021 and $60,000 in March 2021.

You probably made a typo, but it may worth mentioning that it's neither electron nor electors. The wallet is called Electrum.

Anyways, it's possible that your computer is infected with a malware or you are using a fake version of electrum, however I don't know why a hacker should steal worthless testnet coins.
Where did you download electrum from? Did you download electrum from its official website (electrum.org) or somewhere else?

This is wrong.
Prune nodes validate every block and transaction they receive.


This is not possible.
In this way, the node that wants to validate the transaction doesn't know whether the coin exists or not. The node doesn't know whether the coin has been spent before or not.
For validating the transactions, nodes need the full database of UTXOs.

The question is how you will be able to verify the transactions that will be made in the future. That's one of the main purposes of keeping a copy of blockchain.
For validating the future transactions, you need database of all UTXOs and they can't be derived from transaction hashes you have stored.

If you only store transactions hashes and you don't have database of all UTXOs, it won't be possible to verify the transactions that will be made in the future.
There is no way to derive the transactions details and UTXOs from the transaction hashes and the hashes you store are completely useless.

If you want to store smaller size of data, you can run a prune node. If pruning is enabled, old blocks are removed, so you don't require a big space for storage.
I think in this way you even store a smaller size of data than your proposal. Because, you store nothing from fully-spent transactions.

It's not that it can't be profitable to mine bitcoin in the current bear market.
A few days ago, the total hash power of bitcoin reached its all time high. That wouldn't happen if mining couldn't be profitable.

Whether mining is profitable for you or not highly depends on the price of electricity in your country.
You can use mining profit calculators like whattomine or asicminervalue to see whether it's worth to mine bitcoin for you or not.

The Belgium-based investment company bought Bitstamp in October, 2018. Below is the announcement they made about that on their blog.
Bitstamp acquired by NXMH


More information on Coindesk:
Bitcoin Exchange Bitstamp Confirms Sale to Gaming Group NXC

As far as I know, the size of a transaction with 1 native segwit input and 1 native segwit output should be around 110 vbyte.
Assuming the fee rate used for such a transaction is 1 sat/vbyte, the total fee should be 110 satoshi.

Click here to see a transaction paying 110 satoshi as fee.

The lowest fee rate you can set for your transaction is 1 sat/vbyte. That's the current minimum relay fee rate and any transaction with lower fee rate would be rejected by the nodes.
If your transaction is segwit and it includes 1 input and 1 output, its size would be around 110 vbyte. So, the lowest possible fee is around 110 satoshi.

Note that web wallets can be vulnerable to hack attacks.


Metamask is a non-custodial wallet and gives you full access to your private keys. It's also open-source.
The problem with metamask is that it's an online wallet and it's not recommended to use an online wallet. If you want more security, you can go for a hardware wallet.

I remember a case in which some valuable members of the forum got banned temporarily due to participating in an altcoin giveaway.
With your proposal, all of them would lose their rank and become a newbie. I don't think that would be fair.

There have been many people who have fallen victim to fake wallet.dat files. Scammers usually sell those fake files to those who want to get rich quickly.


Bitcoin are stored on the blockchain, not on the wallet. What's shown on blockchain explorers is surely correct. It's possible that what you see in your computer is wrong.

The winner of round 1 had 185 tickets. [Ref.]
The winner of round 2 had 201,566 tickets. [Ref.]
The winner of round 3 had 1,626 tickets. [Ref.]
The winner of round 4 had 882,251 tickets. [Ref.]
The winner of round 5 had 473 tickets. [Ref.]
The winner of round 6 had 4,305 tickets. [Ref.]

In addition to what stated above by LoyceV, block number 4111 was mined on February 13, 2009. In the data you shared, the block time is 1237118551 which is March 19. In the image you shared the date is March 02. In March 2009, you were trying to mine a block which had been mined and broadcast to the network in February by someone else. Most probably you didn't mine any bitcoin at all.

What's shown in block explorers is definitely correct. If you don't see any transaction, it simply means that the address has never received any bitcoin.
Even if you download the blockchain and your wallet is synced, you won't be able to spend the fund which is not yours. The transaction you see in bitcoin core doesn't exist in the blockchain.

You didn't answer the question asked by LoyceV above.
Were you really mining bitcoin in 2009? Haven't you purchased the wallet file?

If your computer is clean and isn't infected with a malware, yes. That' safe.


Yes.

Both should work. Of course, if there's any bitcoin.


If you are going to import the private key of this address, it will be useless. Blockchain doesn't lie to you.


That simply means that there is no transaction with that ID at all.

Don't worry about broadcasting your transaction.
First, you should know whether you have any bitcoin or not. If you really have bitcoin and you own the private key, you will be able to spend the fund.


From "blockheight": 4111
As I said above, the data you shared doesn't match the blockchain.


What's the name of the software?

You are looking at a wrong transaction.
In the transaction you shared, 17.61386661 BTC has been sent from a segwit address.

According to the data shared by OP, the 50 BTC have been mined in the block number 4111. Click here to see the coinbase transaction of that block.
The 50 BTC mined in that block is still unspent.

I don't really understand what you mean by "it takes 10 years to update".
Are you trying to download the blockchain in bitcoin core and it says it takes 10 years to be synced? If so, it shouldn't take that much.


No.
Either you don't have bitcoin at all or you are looking at a wrong address.

According to the data you shared, the 50 BTC have been mined in the block number 4111.
Bitcoin generated on that block haven't been moved at all and are still in the address 1C7JtZUBeSPy7eZQ9vuCcaHRzYjKmnXACJ. This address doesn't match what you shared above.
The transaction ID you shared above is also different from the hash of coinbase transaction of that block.

Where did you take this data from?

If you can't store 400 GB of data, you can enable pruning in bitcoin core. In this way, you don't have to store that large data. Note that even if you run a prune node, you still have to download the full blockchain.

The other only solution is to export your private key(s) from Armory and export it into a SPV wallet like electrum.
In SPV wallets, you don't have to download the blockchain.

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

The post has been edited.
Sorry. As mentioned below by BitMaxz, Armory doesn't work if you download the blockchain in prune mode.