I opened my bitcoin core wallet for the first time in nearly 7 years and do not remember ever setting a passphrase. The good news is I've got bitcoins in the account that I'd forgotten about, bad news is that without the passphrase, I can't send them anywhere to cash them out.

Is there a way to access / hack the passphrase for Bitcoin Core?

  • 1
    The first version of Bitcoin with wallet encryption support was released in september 2011, so it can't be more than 6 years. Aug 23, 2017 at 17:03

1 Answer 1


So you have bitcoin-cli installed on your local computer? Does the command bitcoin-cli dumpprivkey "address" of an address you know related to the wallet lead to the private key you need?

  • Sorry, I don't understand your questions - not great with technical things. I have Bitcoin Core installed on my mac and had bitcoins received there in 2011. Between then and now i have forgotten the passphrase and am locked out of sending my bitcoins to an exchange until I can remember or bypass the passphrase.
    – Klyde
    Aug 22, 2017 at 18:41
  • OK, you have installed it on your mac. Now you can try to find and execute the above command related to an address you have used in the past.
    – KOld
    Aug 22, 2017 at 18:42
  • ok so run the command through terminal? And what address, the one of my current wallet? when I do that is says command not found
    – Klyde
    Aug 22, 2017 at 18:44
  • Yes, first try to find the command and run it. The address should be one which you have used in the past.
    – KOld
    Aug 22, 2017 at 18:45
  • ok I tried bitcoin-clidumpprivkey"my address" and it came back with command not found
    – Klyde
    Aug 22, 2017 at 18:47

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