# DEMI Central Registry
> Public registry of file fingerprints (SHA-256) with an AI-formed Conceptual Core per work, anchored on Ethereum. Operated by UplitAU Pty Ltd, Sydney, Australia.

- For one work, read /registry/{UPL}/ai : instructions for an AI assistant helping that work's registrant.
- Record (JSON): /registry/{UPL}.json · Public page: /registry/{UPL}/index.html · Certificate: /certificate/{UPL}
- Look up by code, file SHA-256 or transaction hash: /registry/lookup?q=
- Later stages of a work (records naming it as Parent): /registry/{UPL}/children
- Read-only MCP server for AI assistants (Streamable HTTP, no login): POST /mcp -- tools get_ai_package, get_record, lookup_record, verify_fingerprint, list_children
- All listed records: /registry/index.json · Front page with the newest records (no JavaScript needed): /
- Working rules shared by Claude and ChatGPT: DEMI Shared Working Protocol UPL-TECH-26-882026-EN -- /registry/UPL-TECH-26-882026-EN/ai
- A record shows that a file existed by a time. It does not establish authorship, ownership or legal rights.