# Bitácora — Universal Memory Index

- **Event:** [Built with Opus 4.7: a Claude Code hackathon](https://cerebralvalley.ai/e/built-with-4-7-hackathon)
- **When:** Apr 21 at 12:00 PM – Apr 27 at 2:00 AM (EDT)
- **Where:** Online
- **Team:** [Edward CALDERON](https://cerebralvalley.ai/u/Edwardcadev)
- **GitHub:** https://github.com/hashpass-tech/BITACORA
- **Demo video:** https://bitacora-1055465030328.us-east1.run.app/
- **Gallery:** https://cerebralvalley.ai/e/built-with-4-7-hackathon/hackathon/gallery
- **Page:** https://cerebralvalley.ai/e/built-with-4-7-hackathon/hackathon/gallery/131

Bitácora is a peer-to-peer knowledge graph where every fact, question, or source you create becomes a cryptographically-signed node — a BIT (Basic Information Timestamp). Memos sync directly between users via WebRTC. No servers store your data. No platform mediates your truth.

The graph is reasoned over by Claude Opus 4.7, which detects logical contradictions across distributed memos, maps cross-jurisdictional positions in real-time, and synthesizes consensus from peer-contributed evidence. Managed Agents continue verifying claims autonomously after sessions end, delivering research dossiers anchored to primary sources.

The core data structure is engineered for O(1) retrieval (HashTable + Merkle proofs) and offline-first operation. The MVP runs as a React Native Web app — same codebase shipping to iOS, Android, and any modern browser. Cryptographic signatures (Ed25519) and Merkle tree verification mean every memo is tamper-proof and every sync is provable.

The problem we solve: today, billions of people fact-check things on their phones, but their findings stay locked on individual devices. No shared truth. No network. No collective intelligence. Bitácora inverts that — your memo network becomes everyone's memo network, but no one owns it.

First deployment: Blockchain Summit LatAm Perú (May 13–15, 2026), where 500 institutional attendees, 70 expert speakers, and 10 parallel regulatory tracks generate exactly the dense, contradictory, citation-heavy content Bitácora was built for. Beyond conferences: earnings calls, legislative hearings, academic panels, court proceedings — anywhere distributed truth matters more than platform convenience.

We didn't build a better fact-checker. We built infrastructure for collective intelligence without a central authority.

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