Auditchain describes itself as:
Auditchain is a decentralized accounting, reporting, audit and analysis virtual machine that automates and provides proof of assurance on the world’s financial and business information.
They provide a video Introduction to the Auditchain Prototol if you want to learn more.
For more information about auditchain, see this documentation.
To learn more about Pacioli, start here with this Pacioli Power User Tool.