Can I upload my private key list and perform balance check or address matching?
A concept to private keys and seed phrases I’ve come to understand from being here. It’s supposed to be a you and you alone thing, never a third party. Should you happen to upload any of such online, sure it’s no longer private and you would be well aware that, you wouldn’t be the only one checking. Your even advised not to save your keys online and having these keys uploaded would be a worst mistake. The work you would be shying away from doing or find too rigorous would be something a team of get what we can would do in hours. So, just get going with what you’ve got. You already have a list of them, approach them in sequence.
Am curious though, just how did you OP, get hold of over 5000 private keys? Bought them in some sales or something? Or perhaps it’s the much you’ve had to generate within the Bitcoin existence time frame. That seems a lot.
If it's only 5000 private keys, just import them into Bitcoin Core. It's the easiest way to check them privately.
Just how does this works though,
Would it assign wallets with some balance on it to a particular key definitively or
It would still be randomized or perhaps merge all of it?
Don’t know what am missing but yeah, what’s to be expected in his method of bulk importation.