Purchasing-Power Stability

The stability objective is the purchasing power of a defined basket, not a fixed exchange rate against any national currency.

$$PPI_t = \frac{\sum_i w_i p_{i,t}}{\sum_i w_i p_{i,0}}$$

Basket weights, sources, and revision rules must be published before use, and any revision must be versioned. A basket that can be quietly reweighted is a mechanism for hiding inflation.

Interactive form: Purchasing-Power Basket.

ISILP. Purchasing-Power Stability. The Intelligentism Specification, version 0.1.0-alpha (revised 2026-08-01). https://intelligentism.isilp.org/spec/intelligent-currency/purchasing-power-stability