Mad Extra SEO Secure Sign is a branded self-hosted deployment of OpenSign, licensed under the GNU Affero General Public License, version 3.
The complete branding-layer source used by this deployment is available in client.Dockerfile, server.Dockerfile, rebrand-locales.mjs, and compose.yaml. The full license is available here.
To request a complete corresponding-source copy for the deployed version, email madextraseo@gmail.com.