> For the complete documentation index, see [llms.txt](https://docs.vanarchain.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.vanarchain.com/ai-tech/neutron/core-concepts.md).

# Core Concepts

Neutron is built on a flexible, modular knowledge architecture designed to make information accessible, verifiable, and intelligent. At the heart of this system is the **Seed**, a compact unit of knowledge enhanced by AI.

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#### Seeds: The Building Blocks of Knowledge

A **Seed** is a self-contained object that captures and organizes information. It can include:

* Text in more than 50 languages
* Images and visual references
* PDFs and structured documents
* Cross-references to other Seeds
* AI-generated embeddings for deep understanding
* Optional blockchain-based verification and ownership

Seeds are modular, searchable, and interconnected. They let users explore relationships between ideas, trace the origin of documents, and surface the right information quickly.

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#### AI-Enhanced Intelligence

Every Seed is automatically enriched using advanced AI models. This includes:

* Semantic embeddings that support meaning-based search
* Cross-modal indexing to connect text with images
* Context graphs that reveal hidden relationships
* Smart metadata for better organization and filtering

Neutron doesn’t just store data. It understands what the data means, how it’s connected, and why it matters.

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#### Dual Storage Architecture

Neutron is designed with flexibility in mind. It supports two storage models, giving users control over how their information is handled.

**Offchain by Default**

* Supports rich media and full documents
* Enables lightning-fast search and indexing
* Optimized for performance and low cost

**Onchain**

* Stores metadata and references immutably
* Provides cryptographic verification and audit logs
* Tracks ownership with decentralized access control
* Runs on Vanar Chain, with ultra-low gas fees

This setup allows users to keep things fast and efficient by default, while activating onchain features only when verification or provenance is needed.

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#### Document Storage Smart Contract

When a Seed is stored onchain, Neutron uses a specialized smart contract that includes:

* Encrypted file hashes for content verification
* Encrypted pointers to UltraPDF compressed files
* Embeddings stored securely onchain (up to 65KB per document)
* Owner addresses and permission settings
* Timestamps and document history

Only the document owner can decrypt what’s stored. Neutron never holds or exposes raw data.

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#### Privacy First

Neutron is built from the ground up to protect privacy. Its system enforces:

* Client-side encryption before anything is sent or stored
* Onchain data that remains fully encrypted and private
* Metadata that never reveals personal or business information

Your data stays yours. No one else can access, verify, or share it unless you allow it.