# Overview of Dymension

By [hapet](https://paragraph.com/@hapet) · 2024-10-14

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Dymension is a **modular blockchain** built using the Cosmos SDK, designed to enhance interoperability within the Cosmos ecosystem via the IBC (Inter-Blockchain Communication) Bridge. It serves as a hub for various **RollApps**—modular applications such as DeFi platforms, gaming applications, and NFTs—allowing seamless user interaction across blockchains.

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### **Key Components of Dymension**

1.  **RollApps**
    
    *   RollApps are modular application chains developed using the **Dymension RDK** (RollApp Development Kit), an enhanced version of the Cosmos SDK.
        
    *   These applications can integrate smart contract frameworks like **EVMOS EVM**, **Polaris EVM**, and **CosmWasm**.
        
    *   RollApps delegate their consensus mechanism to the **Dymension Hub** instead of the Cosmos Hub, distinguishing them from other Cosmos-based appchains.
        
    *   With IBC Bridge, RollApps can interact with other chains in the Cosmos ecosystem.
        
2.  **Dymension Hub**
    
    *   The Dymension Hub uses a **Delegated Proof-of-Stake (DPoS)** consensus mechanism, providing **security, settlement, and liquidity** services for the RollApps.
        
    *   It serves as the **settlement layer** and a **decentralized data source** for the network.
        
    *   The native token **DYM** is used for network fees and liquidity provision. Users can swap tokens or bridge assets using an **AMM (Automated Market Maker)** integrated into the Dymension Hub.
        
3.  **Data Availability Network**
    
    *   The Data Availability (DA) layer temporarily stores and distributes data for RollApps to ensure **cost-efficiency and decentralization**.
        
    *   When a RollApp submits transactions, the **Sequencer** validates and groups them into blocks, sending the data to the Dymension Hub and DA layer.
        
    *   The DA layer provides the storage location, while the Sequencer confirms the RollApp’s state and sends the state root back to the Dymension Hub.
        
    *   This efficient system enables low-latency transactions, with average delays of **0.2 seconds** and a **maximum throughput of 20,000 TPS**.
        

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### **Key Features and Benefits of Dymension**

1.  **Easy Deployment of RollApps**
    
    *   Developers can easily launch RollApps using the **Dymension RDK** and customize them with specific tokens, smart contracts, and other parameters.
        
2.  **High-Performance Network**
    
    *   By utilizing Dymension Hub's consensus mechanism, RollApps can achieve **high throughput and low latency**, supporting large transaction volumes efficiently.
        
3.  **Flexible Transaction Fees**
    
    *   Users can pay network fees using **DYM tokens** or other supported tokens, offering flexibility in fee management.
        

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### **Interoperability with Layer 1 Chains**

Dymension enables RollApps to interact with other Layer 1 blockchains in the Cosmos ecosystem using the **IBC Bridge**. Assets are **locked on the source chain** and **minted on the destination chain**, with Dymension Hub ensuring **fast and secure transaction validation**.

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Dymension’s modular structure and integration with Cosmos SDK make it a powerful platform for developers seeking to build scalable, interoperable blockchain applications. With its focus on **RollApps, high performance, and flexible fee models**, it aims to support a wide range of use cases, from DeFi to gaming and NFTs.

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*Originally published on [hapet](https://paragraph.com/@hapet/overview-of-dymension)*