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Is there a way to prove the ownership of an address without spending bitcoins? I Imagine something like signing some given data with the private key - how much would that weaken the security of the bitcoins behind the Address? Any good read on this topic is welcome!

  • tanks - was missing the right keyword - now I have them – ligi Sep 18 '14 at 12:42
  • Removed a comment here, because using a spoofed link to refer to lmgtfy is rude. Please rather ask, whether OP has tried looking for "correct keyword", or just flag it as the corresponding duplicate. – Murch Sep 18 '14 at 21:49