user43221: Is it possible to calculate a public key from the message hash and signature?

user85: It is possible to create a public key from the signature. It will be equivalent to the key used to generate the signature but not necessarily identical.
You can find an example implementation here.

43221: <p>Is it possible to calculate a public key from the message hash and signature?</p>
 85: <p>It is possible to create <em>a</em> public key from the signature. It will be equivalent to the key used to generate the signature but not necessarily identical.</p>

<p>You can find an example implementation <a href="https://github.com/ScripterRon/BitcoinCore/blob/master/src/main/java/org/ScripterRon/BitcoinCore/ECKey.java#L595-L615" rel="nofollow noreferrer">here</a>.</p>
