user30017: I would like a way to change the private key of a public address, for this you'd of course require the current private key.
Is this at all possible?
I want to prove that it can be done, or prove that it cannot be done.

user208: It cannot be done.
Every private key has exactly one public key, and every public key has exactly one address (ignoring compressed/uncompressed or normal vs P2SH address, which do not matter here).

30017: <p>I would like a way to change the private key of a public address, for this you'd of course require the current private key.<br>
Is this at all possible?</p>

<p>I want to prove that it can be done, or prove that it cannot be done.</p>
 208: <p>It cannot be done.</p>

<p>Every private key has exactly one public key, and every public key has exactly one address (ignoring compressed/uncompressed or normal vs P2SH address, which do not matter here).</p>
