「Using Darwinia Tools 3–3」Smart App User Guide

This post was initially printed on Darwinia

In a previous article, we have now launched a way to switch tokens from the Substrate deal with to the Sensible deal with; this text will introduce one other technique to attain the identical consequence by utilizing Darwinia Sensible App.


We outline Sensible App as an software that transfers tokens from the Substrate deal with to the Sensible deal with throughout the similar chain.

Substrate deal with

Substrate-based blockchains reminiscent of Polkadot and Darwinia undertake the deal with format of SS58, which is normally known as Substrate deal with.

Sensible deal with

Sensible Contract-based blockchains undertake the deal with format of Ethereum format deal with, a 42-character hexadecimal deal with that begins with “0x”. In our documentation, we title this deal with format as Sensible deal with.

Step-by-Step Directions for Sensible App

1. Preparation

Create a polkadot{.js} account(skip this step you probably have already)

  • After the obtain completes, create a brand new account. Please retailer your password and mnemonic seed safely. Don’t screenshot and share with others!

It’s also possible to import an account from pre-existing seed.

Create an account on MetaMask Pockets(skip this step you probably have already)

  • Obtain MetaMask Wallet for Chrome or Firefox and add it to your browser.
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  • Please retailer your password and secret restoration phrase safely whenever you create a brand new account. Don’t screenshot and share with others!

It’s also possible to import an account utilizing a secret restoration phrase.

Setup MetaMask to connect with Crab Community

  • Add a customized community in MetaMask, click on Add Community.
  • Add Crab Community configuration parameters.

Community Title : Crab


Chain ID: 44

Foreign money: CRAB

Block Explorer URL:

  • When the connection is efficiently established, you will notice the determine beneath.

2. Choose community and join pockets

Choose community: Choose community to switch belongings on a sure blockchain.
Fast swap button: “Substrate” and “Sensible” beneath the icon confer with “Substrate deal with” and “Sensible deal with”, and the present image reveals that the belongings on the Crab chain are transferred from the substrate deal with to the good deal with. You may click on the Fast swap button to modify the supply deal with and the goal deal with.
Join Pockets: After choosing the community, you may choose which account to switch belongings from the drop record. The account within the drop record is learn by Sensible App from the plugin.

3. Fill within the switch type

Vacation spot deal with: Fill within the account deal with to obtain the belongings from the sender account. E.g. Should you select to switch belongings from a substrate deal with to a wise deal with, the vacation spot deal with have to be a wise deal with beginning with “0x”.⚠️ Please do NOT fill within the deal with of your change account.
Asset chosen button: Choose the asset that you just wish to switch.
Asset quantity: Fill within the asset quantity you wish to switch.
Affirm button: Affirm the switch type, click on Affirm, and signal the transaction if there isn’t any drawback.

4. Submit and make sure switch particulars

5. Signal the transaction

6. Declare tokens

You might want to declare your belongings solely whenever you switch CKTON from substrate deal with to good deal with. After transferring CKTON from the substrate deal with to the good deal with, please swap the deal with from Sensible deal with to Substrate deal with, after which you’ll discover a tip to assert your CKTON.

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How will we perceive the substrate deal with and the good deal with are on the identical chain?

Crab Community is a Substrate-based blockchain, and it makes use of the substrate deal with format primarily based on the SS58 Deal with. However with a purpose to be suitable with Ethereum good contract ecosystem, this blockchain added a module named Sensible Module which depends on DVM(Darwinia Virtual Machine) expertise. DVM is in step with Ethereum Digital Machine within the underlying paradigm. In the meantime, a second deal with format is launched on high of the prevailing community, particularly good deal with.

Each Wormhole and Sensible App include switch belongings, however what’s the distinction between Wormhole and Sensible App?

Cross-chain switch of belongings between a number of blockchains could be realized by means of Wormhole, however Smart App focuses on transferring belongings throughout the similar chain.

What can we do after transferring tokens to the good deal with?

After transferring tokens to the good deal with, builders who wish to develop DApps on Crab Community will use the tokens as a gasoline payment. For extra detailed operations, please confer with the Builders.

add Crab Community to Metamask?

Please confer with the “Setup MetaMask to connect with Crab Community” components of this article.

add token CRAB and CKTON to Crab Community on MetaMask?

After including the Crab Community on MetaMask, the token CRAB has been there because the gasoline payment on the Crab Community. For token CKTON, we have to add it good contract manually.

  • Add a customized token in MetaMask, click on Import tokens.
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  • Fill within the token contract deal with.

WCKTON contract deal with: 0x159933C635570D5042723359fbD1619dFe83D3f3

NOTE: The Darwinia Digital Machine solely helps 1 native token, however Crab Community has 2 native tokens, one is CRAB(Crab Community Native Token), one other is CKTON(Crab Community Dedication Token). Due to this fact, when the token CRAB title displayed on MetaMask has no change, one other token CKTON title should change. So the “W” of “WCKTON” represents wrapped, and it refers back to the CKTON(Crab Community Native Token) which is saved within the contract within the type of “WCKTON”.

add Pangolin Check Community to MetaMask?

  • Add a customized community in MetaMask, click on Add Community.
  • Add Pangolin Check Community configuration parameters.

Community Title : Pangolin


Chain ID: 43

Foreign money: PRING

Block Explorer URL:

  • When the connection is efficiently established, you will notice the determine beneath.

Contact Us

If in case you have any issues whereas utilizing Darwinia Sensible App, please ship an electronic mail to [email protected].

Collection Articles

「Using Darwinia Tools 3–1」Wormhole User Guide

「Utilizing Darwinia Instruments 3–2」Wormhole Consumer Information II | The Substrate-to-Substrate Bridge Between Darwinia Community and Crab Community.

About Darwinia Community

Darwinia Community is a decentralized cross-chain bridge community constructing on Substrate, which is the “cross-chain bridge hub” of the Net 3.0 Metaverse. It gives a secure and normal bridging resolution, connects to Polkadot, Ethereum, TRON, and different heterogeneous chains by cross-chain switch of belongings and distant chain calls.

Darwinia Community has gained excessive status and recognition alongside the best way to construct the decentralized cross-chain bridge protocol. In 2020, Darwinia was written in Polkadot light-paper as one of many associates of Polkadot and Substrate. And Darwinia was chosen to hitch Substrate Builder Program and Web3.0 Bootcamp, and for the excellent work in Substrate Builder Program, Darwinia Community was formally awarded the Degree 2 badge by Parity. The merchandise and instruments developed by Darwinia have been rewarded three W3F Grants.

Darwinia has been contributing to the compatibility and interoperability of the Metaverse.

The appliance areas of Darwinia Community embody DeFi, cross-chain NFT buying and selling, video games, and so forth. Darwinia additionally develops the Metaverse recreation Evolution Land.

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