The latest version of specification can always be found here: https://github.com/stampit-org/stamp-specification
The history of specification releases can be found here: https://github.com/stampit-org/stamp-specification/releases
The latest version of specification can always be found here: https://github.com/stampit-org/stamp-specification
The history of specification releases can be found here: https://github.com/stampit-org/stamp-specification/releases