> For the complete documentation index, see [llms.txt](https://polarischain-1.gitbook.io/polarischain/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://polarischain-1.gitbook.io/polarischain/6.-transaction-model/6.4-native-attached-assets-naas-also-know-as-rwa-and-tokenization.md).

# 6.4 - Native Attached Assets (NAAs also know as RWA) & Tokenization

NAAs serve as Polarischain’s foundational token model, enabling efficient minting, transfer, and ownership tracking as native ledger operations:

* **Collection ID:** Derived via `BLAKE2b-256` from creator address + collection metadata.
* **Item ID:** Derived via `BLAKE2b-256` from collection ID + item metadata.
* **Ownership & Metadata:** Current holder address is stored on-chain; metadata (name, description, attributes) is persisted in a lightweight blob.
* **Off-Chain Referencing:** Heavy content (images, legal documents) can be URI-linked; only cryptographic references and ownership state remain on-chain.

NAAs inherit the native compliance pipeline when upgraded to Phase 4 regulated security tokens, ensuring ERC-3643 enforcement at the consensus layer.


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