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How to sign a message with your Bitcoin address

This is a way to prove you do possess a particular Bitcoin address, therefore rightful owner of the account. 

You can sign any message using your private key, creating an encrypted string - a signature. Once you have valid signature please follow this procedure on Security tab in order to unlock your payout address:

HINT: When signing message, please make clear what is and what isn't a part of the message, and be aware that every character, including spaces, tabs and line breaks, is a part of the message.

Depending on the wallet provider, please follow instructions how to sign a message on the links below.

This is a general information how to sign your message with your BTC address:


Bitcoin-Qt and MultiBit:


You can follow these instructions if you use some other wallets:

Choose files or drag and drop files
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  1. Matej (Support)

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  1. mark

    thanks this was really helpful Mark