> Common variants & real-world flavors
- LETS (Local Exchange Trading Systems):** Community-run, often small and informal.
- Time Banks: Unit is an hour of service; emphasizes equality of time rather than market pricing.
- B2B Exchanges (trade credits):** Larger, professionally brokered networks where firms clear receivables/payables through mutual credit.
- Clearing between Circles: Separate “cells” can settle periodically via mutual clearing hubs so positives in one offset negatives in another, without leaving the broader ecosystem.