Update README.md

README.md

@@ -55,12 +55,12 @@ This is a sample dataset. To access the full version or request any custom datas
 
 ## Dataset Summary
 
-A structured e-commerce order dataset built from real Amazon purchase histories voluntarily shared by users on the datahive platform. Each record represents a single order line item with full pricing breakdown (unit price, tax, discounts, shipping), fulfilment status, and shipping location.
+A structured e-commerce order dataset built from real Amazon purchase histories voluntarily shared by users on the platform. Each record represents a single order line item with full pricing breakdown (unit price, tax, discounts, shipping), fulfilment status, and shipping location.
 
 The sample includes:
 
-- **10 users**
-- **1k order line items**
+- **10 unique users**
+- **1k order items**
 - Marketplace: Amazon.com
 
 
@@ -81,6 +81,12 @@ The sample includes:
 
 Order data was exported directly from personal Amazon accounts by participating users who consented to share their purchase history.
 
+## Anonymization
+
+- **User & order IDs** — original identifiers replaced with deterministic SHA-256 pseudonyms (truncated to 8 hex characters), preserving cross-record linkability
+- **Addresses** — reduced to city and country only; street names, house numbers, and postal codes are removed
+- **Dates** — normalized to `YYYY-MM-DD`; time components stripped
+
 ## Dataset Structure
 
 ### Data Fields