# Private Permissioned Capabilities and Access Control

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The [**Mandala upgrade**](https://bsvblockchain.360learning.com/course/play/6900bdf422a3c494cc185ea4) facilitates the **creation of private ledgers within overlay networks**, allowing businesses to manage data securely while interacting with the public blockchain through verified transactions. This setup maintains t**he security benefits of the public blockchain while providing the flexibility and privacy of private databases**.

By leveraging the public infrastructure for secure, controlled access to data verification capabilities, **businesses can integrate transparency with privacy and operational control**. This approach is particularly vital for organizations **requiring confidentiality and specific control** over their blockchain interactions. It enables the **creation of dedicated subsets of transactions and data** that are pertinent to a specific and agreed-upon set of applications, utilizing public attestations that act as data check valves for information flows, significantly **enhancing the auditability of the system**.

#### Access Control and State Management

Overlay services can function as **access control systems** or **manage state** within a shared context. By **associating data and access tokens with specific UTXOs**, overlay networks can implement detailed access controls and permissions, **linking them directly to blockchain transactions**. This integration ensures that all state changes—whether occurring within payment channels or recorded on the blockchain via micropayments—are **securely logged and verifiable**.

The Mandala architecture also facilitates the logging of transactions through **extremely low-cost micropayments (ranging from 0.01 to 0.001 cents)**, making it feasible to record numerous small transactions without incurring prohibitive costs.


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