# How to add a new Blockchain

{% hint style="info" %}
For non-EVM chains just follow the same steps but instead of picking the shortName from chainlist, make one up that adjusts to your chain.
{% endhint %}

#### 1. Fork the [DefiLlama-Adapters](https://github.com/DefiLlama/DefiLlama-Adapters) repo

<https://github.com/DefiLlama/DefiLlama-Adapters>

#### 2. **Add the Blockchain to `chains.json`**

You need to add the name of the blockchain in the `projects/helper/chains.json` file to recognize it as a new supported chain.

**Example Change**:

```json
"chains": [
  "ethereum",
  "binance-smart-chain",
  "polygon",
  "zklink",  // Add your new blockchain here. 
  "fraxtal",
  "zksync"
]
```

You should use the field shortName from <https://chainlist.org/rpcs.json>

***

#### 3. **Add Token Mappings in `tokenMapping.js`**

Add the token mappings for the new blockchain to the [`projects/helper/tokenMapping.js` file](https://github.com/DefiLlama/DefiLlama-Adapters/blob/main/projects/helper/tokenMapping.js#L41). This file maps token addresses to their respective identifiers for accurate tracking and handling.

**Example Change**:

```js
const fixBalancesTokens = {
  zklink: {
    [ADDRESSES.zklink.WETH]: { coingeckoId: "ethereum", decimals: 18 },
  },
  ozone: {
     '0x83048f0bf34feed8ced419455a4320a735a92e9d': { coingeckoId: "ozonechain", decimals: 18 }, 
  },
};
```

This ensures tokens on the new blockchain (`zklink`) are properly recognized, including their `coingeckoId` for price tracking and their decimals.

***

#### 4. Submit a Protocol **using your blockchain (e.g.,** projects/savmswap/index.j&#x73;**)**

Lastly, update the project’s configuration file to add your new blockchain as a valid supported chain. If we don't track any protocol on your blockchain, we can not add it. So make sure to add the new chain under a current project or add a new adapter to track the project on your blockchain

**Example Change**:

```js
const { uniTvlExport } = require('../helper/unknownTokens')

module.exports = uniTvlExport('zklink', '0x1842c9bD09bCba88b58776c7995A9A9bD220A925') //blockchain, factory address
```

5. Submit a Pull Request