Hey, im a total newbie and i dont wanna lose my money.
So this is what im trying to do: import the private keys from a casascius gold bar to an electrum wallet that is contained in a ninjastik USB. I tried to do that offline and i got an error that i cannot import it.
The first thing that bugs me is that the private key i found in my bar starts with an s, not with a 5. Shouldnt all bitcoin private keys start with the number 5, not a letter? Not to mention i could not clearly distinguish whether it was a capital S or a small letter. Not that an offline system would verify it in anyway....
So my first question is, whats with my private key? Did i miss something here?
My second question is, can i even import private keys offline? Ive heard that i should be able to do that, and do an unverified online transaction, bring that transaction via USB to my offline electrum and then sign the transaction, and then bring it back to my online computer and verify it and the transaction happens, and this is supposed to be a secure way of sending BTC around. And my third question is, how exactly do i do that? Ive watched these videos:
https://www.youtube.com/watch?v=WK4JmfMCDBghttps://www.youtube.com/watch?v=SBVyFRb6ZZcNow what i did not learn here is how did he "fund" his online computer that does not have private keys to do the transaction, did he import the public key of a BTC address that has BTC in it but no private key or what?
As you can propably see im all but tech savy and i have a bad luck with computers, so i hope someone can give me the simplest explanation on how do i do all this.