Quote from: ranochigo on Today at 01:08:03 PM

Quote from: ghrunda on Today at 12:35:34 PM

But I guess I need to find what private key that is and add the prefix "P2SH-P2PK:privatkey", but how will I know which private key it is? Do you know that HCP?

There isn't a way to distinguish a P2SH private key from a P2PKH private key; the WIF is exactly the same and they can be used to generate both.

Quote from: ghrunda on Today at 12:35:34 PM

In other case I can create a new wallet and import the private key one by one and see which one that hasn't any transaction and add the prefix to it?

Yes, that's the most ideal way unless you can write a script to screen through all the private keys using the different formats.

The prefix is "p2wpkh-p2sh:".

I do select a change address that starts with 3 and it has 2 transactions. One incoming and one outgoing. I do get the base58 private key from that address and the private key starts with a 5. When I importing it to electrum I do write p2wpkh-p2sh:privatekey but the next button is still not enabled. However if I add "p2pkh:" as a prefix it's get enabled. But that doesn't show any transactions.