I found a very old Bitcoin private key. Searching online, I discovered that my private key is base64, has 44 characters, and ends in an equal sign. I only have the private key, I don’t have the seed phrase. I need to convert the private key to WIF format to import it into Electrum. I have no programming knowledge. I’ve been following a Python tutorial on Youtube for some weeks.

I think it would be better to use bitaddress.org instead of Python. It’s more practical, and because I don’t know how to program. I would use a laptop that has never been connected to the internet.

The first step would be to connect it to the internet for the first and only time, download the Electrum app and go to bitaddress.org. The second step would be to disconnect the internet. The third step would be to automatically convert my base64 private key to WIF in bitaddress offline.The fourth step would be to get the results in bitaddress and save them.

Bitaddress gives 2 public keys: the public key ( 130 characters ) and the compressed public key ( 66 characters ). Are both the master public key ? Which of the 2 public keys do I need to create a watch only wallet ? It’s important not to expose the private key.

I think in addition to having Electrum on the laptop offline, it can also be necessary to buy a hardware wallet.

I tested bitaddress offline with an example of a private key from a post of other forum. The result is :

- 2 Bitcoin addresses with QR codes.

- The public key and the compressed public key.

- 4 private keys in different formats.

Do you recommend using bitaddress offline ? Could you help me ?

Sorry for the length of this post. Many thanks. Best regards.