⚠
THIS IS A TESTING WALLET.
* Save your public address and private key.
* Fund your address with the tokens of all the networks.
* For tokens on Polygon zkEVM Testnet and Polygon Mumbai Testnet, use [Polygon faucet.](https://faucet.polygon.technology/)
* For tokens on Sepolia, you can use the [Alchemy faucet](https://sepoliafaucet.com/).
### The Validator Keys
This tutorial will use the default [Hyperlane's Multisig ISM](https://docs.hyperlane.xyz/docs/protocol/sovereign-consensus/multisig-ism). Multisig ISM is a module that takes several signatures from validators before completing the transaction. We use 4 addresses with the threshold 1.
Copy any 4 of your public addresses for later use.
> Note: Make sure to have a private key secured for the public addresses you use. You can generate key pairs using the above method.
## 2. Cloning the Deploy Repository
The Hyperlane team provides you with a repository that you can use to deploy Hyperlane on your preferred chain.
Follow these steps to set up the Hyperlane deployment repo:
* Open your terminal at your preferred directory.
* ```bash
git clone https://github.com/hyperlane-xyz/hyperlane-deploy.git
```
* ```bash
cd hyperlane-deploy
```
* ```bash
yarn install
```
## 3. Adding a Custom Chain to Hyperlane
Hyperlane provided a [few chains in the SDK](https://docs.hyperlane.xyz/docs/resources/addresses). To add a chain missing from this list, follow these steps:
* Open `config/chains.ts`, where you will find the configuration example for adding new chains.
* Add the following configuration for the Polygon zkEVM Testnet:
```typescript
polygonzkevmtestnet: {
name: 'polygonzkevmtestnet',
chainId: 1442,
protocol: ProtocolType.Ethereum,
nativeToken: {
name: 'ether',
symbol: 'ETH',
decimals: 18,
},
rpcUrls: [
{
http: 'https://rpc.public.zkevm-test.net',
},
],
blockExplorers: [
{
name: 'Polygon Scan',
url: 'https://testnet-zkevm.polygonscan.com',
apiUrl: 'https://api-zkevm.polygonscan.com/api',
},
],
isTestnet: true,
},
```
## 4. Adding the Validator Keys
We will use the default [Multisig](https://docs.hyperlane.xyz/docs/protocol/sovereign-consensus/multisig-ism) as our Interchain Security Module.
Follow these steps to set up the keys:
* Open `config/multisig_ism.ts`. You will find the configuration example for adding new chains and their keys there.
* Add the keys for your validator:
```typescript
polygonzkevmtestnet: {
threshold: 1,
type: ModuleType.LEGACY_MULTISIG,
validators: [
'0xabcabcabcabcabcabcabcabcabcabcabcabcabca',
'0xabcabcabcabcabcabcabcabcabcabcabcabcabca',
'0xabcabcabcabcabcabcabcabcabcabcabcabcabca',
'0xabcabcabcabcabcabcabcabcabcabcabcabcabca',
],
},
```
* `threshold` is 1, which means only one of the validator's signatures is required.
**Woohoooo!!!** You are done setting up the Hyperlane deployment on Polygon zkEVM testnet with remotes Mumbai and Sepolia.
---
## 5. Deploying Your Hyperlane
To deploy Hyperlane, run the following command on your terminal.
```bash
DEBUG=hyperlane* yarn ts-node scripts/deploy-hyperlane.ts --local polygonzkevmtestnet \
--remotes mumbai sepolia \
--key 0xbeda2b3910bae7dbfb4e65e9c0931f001066d4f0df257b77ad55093fa271bde2
```
In the above command,
* we are running the `deploy-hyperlane.ts` script
* with `polygonzkevmtestnet` as `local` chain and
* `mumbai` and `sepolia` as remotes. Since `mumbai` and `sepolia` are already provided by the Hyperlane SDK we don't need to add the configurations again.
* the value after `key` param is your private key to the address that contains funds for all the networks.
After running the command, wait for a few minutes till your terminal looks like this 👇🏻
---
Congrats!!! You just deployed Hyperlane on Polygon zkEVM Testnet.
To test this deployment, you must run validators and relayers for all the chains you deployed (local + remote). To learn how to set up validators and relayers, check out these guides on the Hyperlane blog 👇🏻
%[https://blog.hyperlaneindia.xyz/hyperlane-relayers-setup-guide]
%[https://blog.hyperlaneindia.xyz/hyperlane-validators-setup-guide]
---
Thanks for reading this article; I hope you learned something today.