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I have the public address, and the private key of a BTC wallet. How can I import this into bitcoin core so that I can use it to sign messages?

I need to be able to sign a message to show that I possess the private keys for an account.

Thanks for any help.

John Murphy
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  • https://bitcoin.stackexchange.com/questions/5941/how-do-i-import-a-private-key-into-bitcoin-core – Zergatul Jun 01 '18 at 08:34
  • what is YourLongPassphrase in that answer? – John Murphy Jun 01 '18 at 08:35
  • its a password you set up for bitcoin core wallet. if you don't have one (which is highly unrecommended) you should skip this command – Zergatul Jun 01 '18 at 08:36
  • It seems I have lost the passphrase. Is there any way to reset bitcoin core, or do i need to do a full reinstall? I have no funds on bitcoin core currently so have no problem resetting it all. Thanks for your help, zergatul. – John Murphy Jun 01 '18 at 08:41
  • I am not sure, you can try to delete wallet.dat file – Zergatul Jun 01 '18 at 08:54
  • Thanks. I ended up just doing a reinstall. It was simpler than I expected. And for posterity, when I went to "change passphrase" I just put in a new passphrase as both the old and new passphrase and it worked. I Was then able to use the console to import the priivate key. Thanks a lot. – John Murphy Jun 01 '18 at 09:07
  • Answer was given for a similar question as commented by Zergatul here. https://bitcoin.stackexchange.com/questions/5941/how-do-i-import-a-private-key-into-bitcoin-core – John Murphy Jun 01 '18 at 09:08
  • Hi John, thanks, I've closed your question as a duplicate of that one, so that people who find your question will find Zergatul's answer. – Murch Nov 28 '18 at 17:53

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