> ## Documentation Index
> Fetch the complete documentation index at: https://docs.towns.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Contracts

> Smart Contracts powering the Towns Protocol are deployed to Ethereum L2 networks for testnet and mainnet. This page provides a list of deployed contracts needed for running nodes and their network coordinates.

<Note>
  All contract source and deployed addresses can also be found on the [Towns Protocol repository](https://github.com/towns-protocol/towns).
  Contract source code is located in the `contracts` [directory](https://github.com/towns-protocol/towns/tree/main/packages/contracts).
  Deployed addresses can be found under `packages/generated` for testnet and mainnet, respectively.
</Note>

### Network Chain Ids

| Network             | Chain Id | Network Environment |
| ------------------- | -------- | ------------------- |
| Base Sepolia        | 84532    | Testnet             |
| Towns Chain Testnet | 6524490  | Testnet             |
| Base                | 8453     | Mainnet             |
| Towns Chain         | 550      | Mainnet             |

### Contract Addresses

Below are contract addresses to diamond contracts that are required to register a node operator on Base.

<Note>All contracts are deployed using the [Diamond](https://eips.ethereum.org/EIPS/eip-2535) pattern for modularity.</Note>

| Contract Name | Testnet Address                                                                                                                             | Mainnet Address                                                                                                                              | Network |
| ------------- | ------------------------------------------------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------- | ------- |
| Base Registry | [baseRegistry.json](https://github.com/towns-protocol/towns/blob/main/packages/generated/deployments/beta/base/addresses/baseRegistry.json) | [baseRegistry.json](https://github.com/towns-protocol/towns/blob/main/packages/generated/deployments/omega/base/addresses/baseRegistry.json) | Base    |

Below are the deployed diamond contracts that are required to run Stream Nodes in the Towns Network.

| Contract Name  | Testnet Address                                                                                                                                         | Mainnet Address                                                                                                                                    | Network     |
| -------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------- | ----------- |
| SpaceFactory   | [spaceFactory.json](https://github.com/towns-protocol/towns/blob/main/packages/generated/deployments/beta/base/addresses/spaceFactory.json)             | [spaceFactory.json](https://github.com/towns-protocol/towns/blob/main/packages/generated/deployments/omega/base/addresses/spaceFactory.json)       | Base        |
| Entitlements   | [entitlementChecker.json](https://github.com/towns-protocol/towns/blob/main/packages/generated/deployments/beta/base/addresses/entitlementChecker.json) | [entitlementChecker.json](https://github.com/towns-protocol/towns/blob/main/packages/generated/deployments/omega/base/addresses/baseRegistry.json) | Base        |
| River Registry | [riverRegistry.json](https://github.com/towns-protocol/towns/blob/main/packages/generated/deployments/beta/river/addresses/riverRegistry.json)          | [riverRegistry.json](https://github.com/towns-protocol/towns/blob/main/packages/generated/deployments/omega/river/addresses/riverRegistry.json)    | Towns Chain |

### Towns Token Addresses

| Network          | Address                                                                                                               |
| ---------------- | --------------------------------------------------------------------------------------------------------------------- |
| Base Sepolia     | [0x00000000A22C618fd6b4D7E9A335C4B96B189a38](https://basescan.org/address/0x00000000A22C618fd6b4D7E9A335C4B96B189a38) |
| Base             | [0x00000000A22C618fd6b4D7E9A335C4B96B189a38](https://basescan.org/address/0x00000000A22C618fd6b4D7E9A335C4B96B189a38) |
| Ethereum Mainnet | [0x000000Fa00b200406de700041CFc6b19BbFB4d13](https://etherscan.io/address/0x000000Fa00b200406de700041CFc6b19BbFB4d13) |

### Mainnet Towns Chain Resources

| Description                 | URL                                                           |
| --------------------------- | ------------------------------------------------------------- |
| Towns Chain Explorer        | [explorer.towns.com](https://explorer.towns.com)              |
| Towns Chain RPC Node (HTTP) | [mainnet.rpc.towns.com](https://mainnet.rpc.towns.com)        |
| Towns Chain Hub             | [mainnet.hub.towns.com](https://mainnet.hub.towns.com)        |
| Towns Chain Bridge L1 -> L2 | [mainnet.bridge.towns.com](https://mainnet.bridge.towns.com)  |
| Towns Chain Status          | [mainnet.status.towns.com](https://mainnet.status.towns.com/) |

### Testnet Towns Chain Resources

| Description                 | URL                                                              |
| --------------------------- | ---------------------------------------------------------------- |
| Towns Chain Explorer        | [testnet.explorer.towns.com](https://testnet.explorer.towns.com) |
| Towns Chain RPC Node (HTTP) | [testnet.rpc.towns.com](https://testnet.rpc.towns.com/http)      |
| Towns Chain Hub             | [testnet.hub.towns.com](https://testnet.hub.towns.com)           |
| Towns Chain Bridge L1 -> L2 | [testnet.bridge.towns.com](https://testnet.bridge.towns.com)     |

### Celestia Data Availability Layer

Towns uses the Celestia [DA](https://docs.celestia.org/learn/how-celestia-works/data-availability-layer) (Data Availability) Namespace to store blob data on the Towns Chain in a scalable, highly available, and cost-effective manner.

| Namespace ID             | Explorer                                                                                              |
| ------------------------ | ----------------------------------------------------------------------------------------------------- |
| ca1d e12a 2bf1 0ef2 0a85 | [celenium.io](https://celenium.io/namespace/000000000000000000000000000000000000ca1de12a2bf10ef20a85) |