# Handovaa

> Handovaa is a digital platform for tracking item ownership and handovers within private circles, using blockchain-backed records to provide verifiable provenance and an immutable transfer history.

Handovaa is built for closed communities — clubs, families, teams, organizations — that need to track who currently holds which items, and prove the chain of custody over time. Users create private circles, register items (with descriptions and images), and record handovers as cryptographically verifiable transactions. Each handover becomes an immutable block in the item's history, eliminating disputes about ownership and provenance.

The platform is web-based (PWA), supports multiple languages, and is operated from Germany under EU data protection regulations.

## Core pages

- [Home](https://handovaa.com/): Product overview and entry point for new users.
- [About Handovaa](https://handovaa.com/about): Mission, how the platform works, key features, and team background.
- [Contact](https://handovaa.com/contact): Support and inquiry channels.
- [Sign in](https://handovaa.com/login): Existing user login (email/password and passkey/WebAuthn).
- [Create account](https://handovaa.com/register): New user registration with email verification.

## Concepts

- **Circles**: Private groups (a family, a sports team, a workshop) that scope which members can hold and transfer specific items.
- **Items**: Tracked objects with descriptions, images, and a current holder. Each item has a complete handover history.
- **Handovers**: Recorded transfers of an item from one circle member to another. Each handover is verified and added to a tamper-evident blockchain ledger.
- **Blockchain ledger**: Internal append-only chain of handover records — not a public cryptocurrency network. Used purely as a provenance and integrity mechanism.
- **Sub-handovers**: Nested or secondary handovers attached to a parent handover, used to track multi-step or partial transfers.

## Legal & compliance

- [Privacy Policy](https://handovaa.com/privacy): Data handling, GDPR rights, retention.
- [Terms of Service](https://handovaa.com/terms): Usage terms and acceptable use.
- [Imprint (Impressum)](https://handovaa.com/imprint): German legal disclosure (operator, contact, registration).

## Optional

- Public discovery layer: [/.well-known/ai-me.json](https://handovaa.com/.well-known/ai-me.json) — machine-readable site identity manifest.
- Sitemap: [/sitemap.xml](https://handovaa.com/sitemap.xml)