This is easy to do: add a cryptographic signature to your blog posts (you can use a self-signed cert; the signature just proves that the person who signed vario

This is easy to do: add a cryptographic signature to your blog posts (you can use a self-signed cert; the signature just proves that the person who signed various documents had control of the private key in a particular key pair). I think the only obstacle is convincing readers that there's some value in having that digital signature.