# Custom Event Data

Blocktorch is also supporting the possibility to add custom smart contract data from for example forks that mirror the mainnet state. We started to work with partners that provide you the possibilities of enriching contract data, to integrate them seemlessly into Blocktorch. In addition Blocktorch has been built with interoperability of [Open Telemetry Data](/concepts/telemetry.md) in mind. That means, in general we are able, to ingest also other custom data into your blocktorch Project. 

{% hint style="info" %}
If you have a custom event data source you would like us to add please [reach out to us](mailto:contact@blocktorch.xyz).
{% endhint %}

The first partner we have integrated is [Shadow](https://www.shadow.xyz/).

<figure><img src="/files/PEaHSAorbWjdn59kQA02" alt="" width="185"><figcaption></figcaption></figure>

Our frens at [Shadow](https://www.shadow.xyz/) enable you  to modify a deployed contract's source code to add gasless custom event logs and view functions on a shadow fork that is instrumented to mirror mainnet state in realtime. If you want to learn more about how to get started with Shadow please check in [their docs](https://docs.shadow.xyz/).

### Adding your Shadow fork to blocktorch

#### Step 1: Navigate to "Nodes" >> "Shadow Fork"

<figure><img src="/files/rTk5BHLa22cumv55ZfZm" alt=""><figcaption></figcaption></figure>

#### Step 2: Click "Add RPC"

<figure><img src="/files/LlUPl4q880AuApTYsQgy" alt=""><figcaption></figcaption></figure>

#### Step 3: Add your fork by choosing Shadow, give the shadow fork a name & add the RPC

<figure><img src="/files/CqM6NWB3uwePZEeh0TCZ" alt="" width="563"><figcaption></figcaption></figure>

{% hint style="success" %}
Congratulations, you have successfully added your shadow fork to blocktorch 🥳\
If you now try to [add a smart contract](/concepts/data-sources/smart-contracts.md) to blocktorch that has been deployed on your shadow fork you can see your fork in the list of available chains
{% endhint %}


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