This plugin allows you to stamp the contents of your posts to the blockchain. Protect the authenticity of your original work by timestamping the unique identifier (SHA256 hash) of each posts’s content.
Using this plugin you can stamp your posts and add a custom signature with the resulting hash and transaction ID.
Learn more about it and how it works: https://stampd.io/#/about
It requires that you have an account in stampd.io. Visit this URL to register: https://stampd.io/#/register
Screenshots
Stampd.io plugin settings
Stampd.io blockchain stamping metabox displays the current sha256 hash of the content after every save
After a post has been stamped, changes will invalidate the stamping. In this case the post needs to be stamped again or returned to the previous revision
Custom signature displayed below each stamped post