Is the another way to verify the origin of the file?
There is a golden opportunity for you. You can download the whole file by installing it properly. And can participate in a 14-day challenge.
Had some questions/confusions etc!
1. How do I run this? Never used this, so I have 0 idea. Need a guide.
1. Download Bitcoin Core from
https://bitcoincore.org or bitcoin.org and then either run the bitcoind application in the terminal or click on bitcoin-qt for a graphical screen.
2. Use pruning, see above.
3. It should not affect Bitcoin Core because it will just resume where it left off after a connection interrupt.
I found a guideline from here you can download very easily. NotATether has posted a challenge on Bitcoin Core, which you can find on
Beginner and Help.
Note that this challenge is still open for anybody who meets the requirements in the OP.
It's open to everyone, so you can take this challenge if you download it. Your right way is downloaded, and your challenge is taken. You can download and use Bitcoin Core and earn 14 merits in this direction. If you have enough space on your laptop and PC, participate in the 14-day challenge and earn 14 merits.