Web App

TH Hackathon

10-stage Excel qualifier — cryptographic workbook chain, per-player seeded answers, and a live leaderboard.

Crypto workbook chainEach player gets a uniquely seeded Excel workbook — answers hash-locked.

Live leaderboardReal-time scoring as players submit each stage — 15-minute total time limit.

Host panelAdmin dashboard — monitor all players, view submissions, manage the event.

Selfie uploadsPlayers upload selfies with completed workbooks — verification layer above the hash.

Stack — Python (crypto/generator), vanilla HTML/JS, AWS S3+CloudFront+API Gateway+Lambda+DynamoDB