We are in the process to design and develop a proof of concept application to digitally sign the documents. It is a fix bid project. Please take a look at the attached documents and all reference links.
Here is more details about the project. Please take a look at the attached sample pdf documents to see how the final output is going to look like.
Please feel free to contact me if you have question on the requirements. Once you got everything you need to scope the project then please email me bid including the design document and the technologies to be used.