Sign Message

A single purpose small Python script to sign and verify messages with bitcoin private keys.

How to use:

Requires ecdsa library. Do pip install ecdsa before using script.

To sign a message:

$./signmessage.py -s
Verify message

Enter address:
1HUBHMij46Hae75JPdWjeZ5Q7KaL7EFRSD
Enter message:
test message
Enter private key:
5KMWWy2d3Mjc8LojNoj8Lcz9B1aWu8bRofUgGwQk959Dw5h2iyw

Signature:

G0k+Nt1u5boTTUfLyj6x1T5flg1v9rUKGlhs/jPApaTWLHf3GVdAIOIHip6sVwXEuzQGPWIlS0VT+yryXiDaavw=

To sign a message:

$./signmessage.py -s
Verify message

Enter address:
14dD6ygPi5WXdwwBTt1FBZK3aD8uDem1FY
Enter message:
test message
Enter private key:
L41XHGJA5QX43QRG3FEwPbqD5BYvy6WxUxqAMM9oQdHJ5FcRHcGk

Signature:

IPn9bbEdNUp6+bneZqE2YJbq9Hv5aNILq9E5eZoMSF3/fBX4zjeIN6fpXfGSGPrZyKfHQ/c/kTSP+NIwmyTzMfk=

To verify a message:

$./signmessage.py
Verify message

Enter address:
14dD6ygPi5WXdwwBTt1FBZK3aD8uDem1FY
Enter message:
test message
Enter signature:
IPn9bbEdNUp6+bneZqE2YJbq9Hv5aNILq9E5eZoMSF3/fBX4zjeIN6fpXfGSGPrZyKfHQ/c/kTSP+NIwmyTzMfk=

Message verified: True