I’ve been involved with several two-sided marketplaces and payment services, and a robust double-entry book-keeping subsystem has always been there from the start. It’s easy to validate the need but/so I also find it hard to believe that Square only started keeping 2E transaction books in the last year. It’s the basis of many high quality controls and their internal audits and reconciliation to GL must’ve been a horrorshow without it.
It’s also the original event-sourced conflict-free replicated data type and the joke about CRDT for your debits is a classic thigh-slapper in the exciting world of accounting software backend implementation
It’s also the original event-sourced conflict-free replicated data type and the joke about CRDT for your debits is a classic thigh-slapper in the exciting world of accounting software backend implementation