Scene 01Case file
Atar
An AI address-verification and trust-scoring platform for banks, built at Wema Hackaholics 6.0. I led the six-person team, wrote the product and backend specs, and built the frontend.
Overview
Banks still verify a customer's address with paper and site visits.
Atar (Address Trust & Authentication Registry) replaces that with a submission and a score: upload a utility bill, ID, or CAC certificate, and get back a 0 to 100 Trust Score with a decision.
I led the team through the hackathon. I wrote the product and backend PRDs, which set out the two-stage AI flow (Gemini Flash for OCR and extraction, Gemini Pro for reasoning, cross-checked against GPS) and the confidence thresholds that auto-approve, flag, or reject a request. Teammates built the FastAPI backend from that spec; I built the Next.js frontend: document upload, an async submit-then-poll status flow, and downloadable PDF trust reports.
We didn't place, but we shipped a working, deployed demo in hackathon time.
What I built
- 01Led a 6-person hackathon team
- 02Wrote the product and backend PRDs
- 03Two-stage Gemini flow: extract, then reason
- 040–100 Trust Score with approve/flag/reject
- 05Async submit-then-poll verification status
- 06Downloadable PDF trust reports
Stack
Next.js · TypeScript · TanStack Query · Zustand · Gemini · FastAPI · PostgreSQL · jsPDF