# Overview

$DENSITY is the native token of the Old Rock ecosystem. 

The symbol for $DENSITY is ䷀.

Old Rock has crafted and continues to expand various use cases for $DENSITY. To address the occasional delay and cost challenges associated with on-chain transactions, we are committed to striking a harmonious balance between on-chain and off-chain systems, ensuring a smooth user experience. 

## On-chain

$DENSITY is built on Base. [Base](https://www.base.org/) is a Layer-2 scaling solution for the Ethereum blockchain.  Please see [base-network](https://docs.oldrocknft.com/density/base-network "mention") for instructions and more information.

Governed by the $DENSITY smart contract, these tokens in your wallet can be used to:

* Swap on a DEX (for example, swap $DENSITY for ETH)
* Deposit on-chain $DENSITY in to your Old Rock ecosystem balance

For a breakdown of the $DENSITY token allocations, use cases, and deflation please see [distribution](https://docs.oldrocknft.com/density/distribution "mention"). 

## Off-chain

Off-chain $DENSITY is your Old Rock ecosystem balance. For more detailed information, please refer to [ecosystem-balance](https://docs.oldrocknft.com/density/ecosystem-balance "mention"). 

While currently visible in the header of the [Amplify](https://amplify.oldrocknft.com/) application, it will soon be featured in the header of any application you use across the ecosystem. Your Old Rock ecosystem balance can be used to:

* Engage with any apps requiring a token balance (for example, play Density Deck)
* Withdraw from your Old Rock ecosystem balance to on-chain $DENSITY