# Decentralization

The DEXPIRY system is based on Blockchain distributed ledger technology (DLT).

The DEXPIRY decentralized application (dApp) enables users to interact with the DEXPIRY database and the Blockchain, on which records of the creation and transactions of [<mark style="color:green;">DEXPIRY tokens</mark>](/dexpiry_public_eng/system-components/dexpiry-token.md) are permanently stored.

The DEXPIRY dApp is configured to interact with the Optimism Blockchain Network (OP Mainnet), which is used as a "Layer 2" (L2) solution for scaling the Ethereum Blockchain. Optimism for scaling Ethereum uses the so-called "Optimistic Rollup", whose approach involves moving computing operations and storing state "off-chain". Thus, Optimism executes transactions outside the Ethereum network, but publishes transactions on the Ethereum Mainnet as`calldata`. This effectively assumes the security, decentralization and transparency of the Ethereum blockchain and its "Proof of Stake" (PoS) consensus mechanism for reaching agreement between distributed nodes in order to prevent the validation of unauthorized transactions on the network.


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.dexpiry.com/dexpiry_public_eng/decentralization.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.