Decentrall (or "Proof-of-Receipt")

The Problem

Right now, big retail giants and credit card companies sell your purchase history to marketing firms for billions. You, the consumer, get zero percent of that cut. At the same time, AI companies desperately need clean, structured, real world data (like consumer spending habits) to train localized economic agents, but sourcing it ethically is incredibly difficult.

The Solution

An app where users take photos of their shopping receipts (or link e-receipts). The receipt is processed locally on-device using a lightweight AI model to strip out personal identifiable information (PII). The sanitized data (items bought, prices, location, timestamp) is minted as an anonymous data point on a privacy preserving ledger. Retailers and AI firms buy access to these aggregate data pools. The Twist: Users are paid instantly in micro rewards or stablecoins.

Target Audience