Sealed Field-Evidence Platform for Banks & Insurers Sealed Field-Evidence Platform for Banks & Insurers

Overview

Built a field-verification demo for an early-stage verification venture serving banks and insurers, turning each phone capture into a hash-sealed evidence package with a site map, score breakdown and chain of custody, shown on the meeting-room screen seconds later.

Highlights

1. 01

   Built a Next.js 16 / React 19 app with 11 routes, from QR-launched phone capture (chunk-hashed video, plate photo, witness selfie, GPS) to a projector room mode, operator console, public verification page and printable PDF certificate.

2. 02

   Enriched each capture with open data (MET Norway weather, Copernicus GLO-30 elevation, Sentinel-2 true color and NDVI) and BlackPrint socioeconomic and H3 employment layers pulled by a SELECT-only extractor, labeling every figure with one of six data classes.

3. 03

   Read serials with local OCR plus a capped GLM-5.3-Flash second opinion on Modal that never receives faces, covered the core library with 221 node:test cases, and added a Vercel cloud mode on PostgreSQL and Blob storage.

Stack

• Next.js 16
• React 19
• TypeScript
• MapLibre GL JS
• PMTiles
• PostgreSQL
• Vercel Blob
• OCR (RapidOCR / tesseract.js)
• Sentinel-2 / Copernicus DEM
• Cryptographic Hash Chains
• LLM Second Opinion (Modal)
• node:test