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For more information about how to connect to Polkadot Hub, please check the Wallets for Polkadot Hub guide.

Account Mapping

If you are using a native Polkadot account (32-byte format) that was created with a Polkadot/Substrate keypair (Ed25519/Sr25519) rather than an Ethereum-compatible keypair (secp256k1), you'll need to map your account to enable Ethereum compatibility. See the Account Mapping section for more details.

Networks Details

Developers can leverage smart contracts across diverse networks, from TestNets to MainNet. This section outlines the network specifications and connection details for each environment.

WebSocket (WSS) endpoints

The WSS endpoints listed below are not behind an eth-rpc proxy. For Ethereum JSON-RPC compatibility, use the HTTP RPC URLs provided for each network instead.

Polkadot Hub TestNet

Network name

Polkadot Hub TestNet

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Currency symbol

PAS

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Chain ID

420420417

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RPC URL

Parity

https://eth-rpc-testnet.polkadot.io/

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Block explorer URL

Blockscout

https://blockscout-testnet.polkadot.io/

Routescan

https://polkadot.testnet.routescan.io/

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WSS URL

wss://asset-hub-paseo-rpc.n.dwellir.com

Polkadot Hub

Network name

Polkadot Hub

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Currency symbol

DOT

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Chain ID

420420419

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RPC URL

Parity

https://eth-rpc.polkadot.io/

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Block explorer URL

Blockscout

https://blockscout.polkadot.io/

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WSS URL

wss://polkadot-asset-hub-rpc.polkadot.io

Kusama Hub

Network name

Kusama Hub

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Currency symbol

KSM

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Chain ID

420420418

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RPC URL

Parity

https://eth-rpc-kusama.polkadot.io/

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Block explorer URL

Blockscout

https://blockscout-kusama.polkadot.io/

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WSS URL

wss://kusama-asset-hub-rpc.polkadot.io

Test Tokens

You will need testnet tokens to perform transactions and engage with smart contracts on any chain. Here's how to obtain Paseo (PAS) tokens for testing purposes:

1. Navigate to the Polkadot Faucet. If the desired network is not already selected, choose it from the Network drop-down.

2. Copy your address linked to the TestNet and paste it into the designated field.

   

3. Click the Get Some PASs button to request free test PAS tokens. These tokens will be sent to your wallet shortly.

   

Now that you have obtained PAS tokens in your wallet, you’re ready to deploy and interact with smart contracts on Polkadot Hub TestNet! These tokens will allow you to pay for gas fees when executing transactions, deploying contracts, and testing your dApp functionality in a secure testnet environment.

Where to Go Next

For your next steps, explore the various smart contract guides demonstrating how to use and integrate different tools and development environments into your workflow.

• Get started with Remix

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  Learn how to get started with Remix, a browser-based IDE for writing, deploying, and interacting with smart contracts.

  → Build with Remix IDE

• Deploy a contract using Remix

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  Deploy your first contract on Polkadot Hub using the Remix IDE.

  → Build with Remix IDE

• Interact with the blockchain with viem

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  Use viem to deploy and interact with smart contracts on Polkadot Hub.

  → Build with viem