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I'm looking to setup a monero address for each of my users on my website so they can sign a message to prove that they own the monero address. Since you cannot sign a message with your payment_id, this is the only way it seems. My main concern is if a user can prove that they own that specific address, by signing the a message.

A good example is by signing the message of a bitcoin address, it proves that the monero user owns that particular bitcoin address. This is just one of the use cases I have.

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  • Is there a question ?
    – user36303
    Commented Sep 28, 2017 at 18:11
  • Hi @duckx, You also asked about signing messages here: How to sign a message with my public monero address and verify it using the cli / gui / javascript app? and got very detailed answers, but did not select one. What is different here? Commented Sep 28, 2017 at 19:03
  • It's different. Say I have 100 users and each users has their own private key on their account. I want to be able to write a script where I can just sign a message with their private key without the need to import their key into the wallet or best not even needing the core wallet if possible. Commented Sep 28, 2017 at 20:51
  • You need the private key to sign a message, same in Bitcoin and Monero. I don't see any way that you could use the key to sign a message without importing it into some piece of software. Commented Oct 1, 2017 at 22:14

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