Read the PDF: they're working on a chameleon hash scheme so that their blockchain can be undetectably modified, not unlike making an accounting ledger with dry

Read the PDF: they're working on a chameleon hash scheme so that their blockchain can be undetectably modified, not unlike making an accounting ledger with dry erase markers. That's going way beyond disagreeing with Bitcoin; what they're doing doesn't have the strong auditability that you'd expect from a "blockchain" solution. It's closer to a bog standard database really.