ok, so read trough the entire white paper, and that is huge. You really do need some knowledge of how the accounting business works today to really make out what the value will be. From my point of view, if I read this correctly, one of the biggest game changers is that you would be able to surely trace a source of an invoice! Today there is a lot of scams with fraud invoices, and if this could prevent that, you have a feature that all companies would be interested in!
That is also a good point that I didn't think of. I often hear about phishing attacks, viruses and ransomware through e-mails with subject "Invoice" with the payload wrapped in an archive pretending to be a PDF or DOC file. If PaypIe could eliminate that attack vector I think it would be invaluable to businesses who encounter downtime, lose a lot of money and leak sensitive info that way.