A public key is pretty long for an address (eg ~500 bytes for RSA-4096).<p>Instead, you can use a hash of the public key for an address. That&#x27;s what I&#x27;m doing for Ensichat [1]<p>[1] <a href="https:&#x2F;&#x2F;github.com&#x2F;Nutomic&#x2F;ensichat" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;Nutomic&#x2F;ensichat</a>