> For the complete documentation index, see [llms.txt](https://docs.tajirchain.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.tajirchain.com/introduction/architecture-overview.md).

# Architecture Overview

## Architecture Overview

Tajir Chain is an EVM-compatible Layer 2 network using OP Stack execution infrastructure and Polygon AggLayer connectivity.

### Architecture Summary

The production architecture consists of:

* **Execution Client:** OP-Geth compatible execution
* **Rollup Driver:** OP Node compatible rollup processing
* **Sequencer:** Orders and executes transactions
* **State Database:** Maintains accounts, balances, contracts, and network state
* **RPC Infrastructure:** Provides access to wallets, applications, exchanges, and indexers
* **Polygon AggLayer:** Provides cross-chain interoperability and coordinated settlement
* **Ethereum Mainnet:** Serves as the L1 settlement network
* **Block Explorer:** Provides public transaction, address, block, and contract visibility

### Settlement Flow

1. Users submit EVM-compatible transactions to Tajir Chain.
2. The Tajir sequencer orders and executes the transactions.
3. Blocks are produced approximately every two seconds.
4. Network state and settlement information are processed through Polygon AggLayer.
5. Final settlement is anchored to Ethereum Mainnet.

### Mainnet Parameters

| Parameter            | Value                                                               |
| -------------------- | ------------------------------------------------------------------- |
| Tajir Chain ID       | 3377                                                                |
| Ethereum L1 Chain ID | 1                                                                   |
| AggLayer Rollup ID   | 28                                                                  |
| Block Time           | Approximately 2 seconds                                             |
| Block Gas Limit      | 60,000,000                                                          |
| Native Gas Token     | TJR                                                                 |
| RPC                  | [https://rpc.tajirchain.com](https://rpc.tajirchain.com/)           |
| Explorer             | [https://explorer.tajirchain.com](https://explorer.tajirchain.com/) |

Canonical genesis files, rollup configuration, deployed addresses, checksums, and build provenance are available in the official Chain Registry:

<https://github.com/Tajir-Chain/tajir-chain-registry>

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