How to start integration with CSC (Cloud Signature Consortium)?

From what I have heard, support for CSC-signature providers was supposted to be a new feature of the next generation Acrobat. I have the most recent Acrobat Beta at my disposal but cannot find anything related in the settings. At least this is where I had expected it.

Writing a new custom plugin would not require me to comply to the CSC standard. I could use some propriary protocol for acquiring the signature. But this is not what I was aiming at. I wanted to use the "supported way". Natively supported by the signature application, that is to say.

Are you a CA who wishes to provide signing services to Acrobat users, or are you a user who wishes to use Cloud Signing? I know that using a cloud signing service has been implemented for Adobe Sign, but I don't know if the latest version of Acrobat or Reader supports it.

The API described is a web API. What information seems to be missing? It isn't an API to Adobe products.

If you want to extend Acrobat Reader you would need the Acrobat SDK. Acrobat Reader plug-ins have specific limitations, and are subject to Adobe reviewing your plans and liking them. And a fee.