LeafLedger

The problem

South African cannabis clubs are legally required to track every member's stock movements and contributions, but most were running that on spreadsheets and paper logs, no audit trail, no reliable way to reconstruct stock history, and nothing that would hold up to a regulatory inspection.

The goal

Build a staff-only ERP that gives club staff real-time visibility into stock, sales, and suppliers, while producing an inspection-ready, tamper-evident audit trail for every transaction, without requiring club members to interact with the system directly.

Engineering decision

Modelled inventory as a movement ledger (receive, adjust, waste, transfer, dispense) so stock levels are reconstructed from history instead of mutated directly.

Tradeoff

Manual, in-person KYC trades automation for the verification certainty regulators require in this industry.

Insights

Modelling inventory as an append-only movement ledger meant every stock figure was reconstructable and auditable, not just a mutable number that could silently drift from reality.

A staff-only access model removed an entire class of member-facing security concerns, shifting the compliance burden onto internal role management instead.