## **Project Description**

Subview is blockchain explorer for inspecting and analyzing EVM Chains. Subview provides a comprehensive, easy-to-use interface for users to view, confirm, and inspect transactions on EVM (Ethereum Virtual Machine).
[Subview - Darwinia Smart Chain](https://darwinia.subview.xyz)

### **Why is this project is good for the Darwinia ecosystem:**

1. Darwinia Smart Chain currently does not have a specific Darwinia Smart Chain block explorer. For developers, will encounter obstacles when using the Darwinia network, especially when developers develop a Dapp. Subview can provide detailed block information and transaction information，developers can read and verify Solidity smart contracts and access pre-existing contracts to fast-track development.

2. For users, Subview support for ERC20 and ERC721 tokens, you can easily view your asset statistics, transaction history, and gas fee usage, contract method calls and logs are decoded to provide additional information directly from the UI.

![Transaction Details](https://raw.githubusercontent.com/icecream-teams/images/main/subsquare-01.jpg)

### **How you will integrate this project into Darwinia:**

Subview will deploy a Darwinia Network based explorer instance, which will scan past blocks and complete all block statistics. Once the scan is complete, Darwinia users visit the subview to query the blockchain data they need.

### **Team Code Repos**

The version is not open source.

### **Proposal**

Subview will provide the following to Darwinia community:

- darwinia.subview.xyz provides user access to Darwinia Smart Chain statistics (15 months)

## **Colabriation Funding**

Total funding amount: 1,500 USDT. Allow RING.

Date: 24.10.2022
Requested: 1500 USDT / 0.0056 = 267,857 RING (based on 7day avg rate by Coingecko)

Darwinia Network Address (RING): 5HVmAxfakqty9prcZqh77DH7pgBW7QJgvMBcXfCZxjCP6gSC


Subview support Darwinia Smart Chain

Greetings community of Darwinia Network! 
I'm Razvan - Senior Blockchain Developer representing Kylin Network Dev Team and our Community of Kylians. We want to propose the opening of an HRMP cross-chain communication channel between Kylin's Canary Network -Pichiu Network (paraid 2102). Initially, the main usecase will be to transfer PCHU and PRING between the two chains, after will enable access to our Kylin Oracles and APIs.

The procedure for opening the channels is as follows:
1. Pichiu Network propose to request to open Pichiu Network to Pangolin Parachain HRMP channel
2. Wait until proposal on step 1 get approved & encated
3. Pangolin Parachain propose to accept the request and request to open Pangolin Parachain to Pichiu Network HRMP channel
4. Wait until proposal on step 3 get approved & encated
5. Pichiu Network propose to accept Pangolin Parachain to Pichiu Network HRMP channel
6. Wait until proposals on step 5 are approved & enacted
7. Wait for another session on Rococo for the change to be effective
XCM based crosschain transfer will be possible at this stage.

The proposedMaxCapacity and proposedMaxMessageSize are set to the values of Rococo’s configuration.activeConfig.hrmpChannelMaxCapacity and configuration.activeConfig.hrmpChannelMaxMessageSize values, respectively. 
Pichiu Network has already created channel request and we are looking forward to the next steps.

Open HRMP communication  between Pichiu Network(paraid 2102) and Pangolin Parachain

**Proponent:** 2svNqNCFGDgeGXw5AXK8vSLdp5tjRfDwbHLQieE4NpEmbbac 
**Date:** 26.09.2022
**Requested:** 4428 EUR / 0.006 = 73 800 RING (based on 7day avg rate by Coingecko)
**Short description:** Web3alert.io maintenance costs for Darwinia at the rate of 600 EUR/month (+ VAT)

![1](https://gcdnb.pbrd.co/images/dwEe6iEs2est.png)

**About team**
We are a full stack team that has been working with Polkadot and Kusama for a long time. 
Part of our team may be familiar to you as members of Ryabina validator.
We earlier developed [https://t.me/Darwinia_Ryabina_bot](https://t.me/Darwinia_Ryabina_bot).
Substrate part of our code is open-source: [https://github.com/web3alert/substrate-client](https://github.com/web3alert/substrate-client)

**Context and Problem Statement**
https://web3alert.io is a service that listens for events on blockchain networks (including Kusama, Polkadot and some Substrate networks) and sends notifications about them to messengers. At the moment, Web3alert supports Telegram, Discord and Slack.

Problem 1: Absence of a unified tool for instant alerts about on-chain events in the substrate ecosystem.

Goal 1: provide Darwinia users with immediate access to on-chain data on. Web3alert operates across several Substrate-based networks. Despite the differences in the networks, the subscription creation path is the same.

Problem 2: High entry threshold for users who want to know what's happening in different networks

Goal 2: provide Darwinia users with an interface that allows users to create and manage subscriptions to on-chain events of different networks in one place.

![2](https://gcdnb.pbrd.co/images/aDNl8uYmFJf5.png
)

Problem 3: Absence of alerting service that fits a wide range of users, from beginners to experienced developers.

Goal 3: allows Darwinia users to easily set up subscriptions to necessary notifications, and for this purpose, there is already a ready-made tool - Simple mode. There is no need for beginners to dive into the modules, calls and events to set up subscriptions because the most popular and useful ones are already collected here. 

![3](https://gcdnb.pbrd.co/images/aZg8IMyz4KnO.png)

In contrast, the Advanced mode allows experienced users to create subscriptions to any event or call which can be useful for specific tasks and situations. All the modules, events, calls and filters: no matter what you need it is there! It can be a significant feature for the networks’ developers, as soon as receiving an instant notification about events can save time, reputation and money.

![https://gcdnb.pbrd.co/images/ckBJedyiwC4i.png](https://gcdnb.pbrd.co/images/ckBJedyiwC4i.png)


Problem 4: need to get notifications instantly on your smartphone / tablet / laptop / PC

Goal 4: provide users with a variety of messenger choices. Notification messages can be received in Telegram, Discord or Slack - three of the most convenient and thus popular messengers within the crypto community. The alert message contains information about Network, Module, Event happened, as well as other parameters such as addresses or amount (f.e. in a transfer alert).
				

**Funding:**
The costs to be covered include the following items the team will work on for the proposal for the next six months:

Updating the code base:

- Control of the code relevance and current/future functions compatibility with the latest versions of Darwinia.
- Timely update of dependencies including api.
- General development of Darwinia integration - new features, fixes of possible bugs.

Servers and maintenance:

- Development of internal infrastructure and work on stability and high uptime of Web3alert - increase of fault tolerance, monitoring improvement.
- Fast response to service downtime and possible incidents, including on-chain metadata updates.

Users support :

- Technical support for users and developers using the service. 
- Work with the community. 
- Creation of training materials.

TOTAL per month = 600.00 EUR
TOTAL for 6 months = 3,600.00 EUR
VAT 23%* = 828.00 EUR
GRAND TOTAL FOR 6 MONTHS = 4,428.00 EUR

*Please note that we will have to pay VAT. This is a peculiarity of Portuguese law, arising from the inability to prove the location and legal status of the payer (Darwinia network).


Darwinia integration into web3alert.io

Greetings community of Darwinia Crab! I am Ivan, a member of the Robonomics Network team.

On behalf of Robonomics I propose to open a bi-directional HRMP channel between Robonomics and Darwinia Crab. Robonomics Network is interested in a way to bridge our ERC-20 and parachain native tokens to make a service for transferring them in between Ethereum and Robonomics parachain on Kusama. One of the important steps in this direction is the opening of the HRMP channel.

**Technical details**

The procedure for opening the channels is as follows:

1. Robonomics creates a request to open Robonomics to Darwinia Crab HRMP channel (hrmp.hrmpInitOpenChannel for paraId: 2105).
2. Darwinia Crab proposes to accept the request (hrmp.hrmpAcceptOpenChannel for paraId: 2048).
3. Darwinia Crab creates a request to open Darwinia Crab to Robonomics HRMP channel (hrmp.hrmpInitOpenChannel for paraId: 2048).
4. Robonomics proposes to accept the request (hrmp.hrmpAcceptOpenChannel for paraId: 2105).
5. XCM based cross-chain transfer will be possible at this stage.

These extrinsics need to be called with the parachain’s sovereign account. To achieve this, Robonomics and Darwinia Crab should use polkadotXcm pallet to send XCM messages to the relay chain, by executing the following extrinsic from the parachain.

Robonomics has already created channel request and we are looking forward to the next steps.

HRMP Channel Between Robonomics and Darwinia Crab

Recently GLMR/MOVR has been introduced to Parallel Finance's Money Market, and since Darwinia/Crab have some collaborations with them, can we propose to introduce Crab as well? 

Can we integrate the Crab into Parallel heiko's Money Market

- Problem
When trying to connect the [Talisman](https://talisman.xyz/) wallet, it's not officially supported and while it DOES work (you can connect your wallet and sign TXs), it's not the smoothest experience.

- Solution
Talisman has created an easy library for Darwinia Apps to implement (See below). If you want to use your own UI, you can use just part of the package (to do most of the hardwork for you!) and add your own UI on top. Or you can use our built in UI to make the process easier.
[https://github.com/TalismanSociety/talisman-connect](https://github.com/TalismanSociety/talisman-connect)

As more wallets come to the dotsama ecosystem, Apps will need a better way to manage them, this feature request provides some future proofing and also let's your Apps support Talisman!
You can see a working implementation of this at -> [https://app.talisman.xyz/](https://app.talisman.xyz/)

- User journey

As a user of your Apps
Given I click, Connect
Then I want to see a modal display that allows me to select my preferred wallet.

> First time user
When I select Talisman
Then I want to see a dialog appear showing the different wallets I could link (this is handled by the extension)
And after selecting one or more wallets, the modal should disappear and the Apps should re-load with my data

> Returning user
Then when I click the wallet of choice, and select Talisman
And after selecting one or more wallets, the modal should disappear and the Apps should re-load with my data.

Add a wallet selector and add support for Talisman wallet.

SubSquare allows Crab Network members to take on an active role in network governance and helps members to:

- **Discuss**: Use the built-in forum to discuss issues and improvements, meanwhile, propose new ideas.
- **Track and voice opinions**: Track ongoing proposals/referenda and voice opinions before and during voting.
- **Vote**: Use the simplified interface to quickly cast a vote.

To check or vote in a referendum, make sure that you are registered or logged in to SubSquare and follow the steps below.

- **Login with Web3 address**: Subsquare requires an account. Make sure you have a Web3 address linked.
- **Set Email**: This step is optional, and setting up an email can help you get alerted when someone comments on or replies to your message.
- **Create an On-Chain Proposal**: Anyone can make a proposal if they have locked enough governance tokens. This involves 2 steps:

> Creating the on-chain proposal via [Polkadot Darwinia Crab Apps](https://polkadot.js.org/apps/?rpc=wss%3A%2F%2Fdarwinia-crab.api.onfinality.io%2Fpublic-ws#/democracy).

> Adding text/arguments/explanation to your proposal via the [Subsquare governance platform](https://crab.subsquare.io/).

*Once a proposal is created, governance participants are asked to support proposals. One proposal per week is promoted to a referendum.*

*Important: You need to convince the community that your proposal is useful and deserves backing. Only proposals with sufficient backing from the community go to vote. For this, you need to upload a description on SubSquare and participate in the discussion.*

- **Vote on Referenda**: After a set number of blocks, the proposal with the highest backing staked governance tokens will be put up for a vote. Once a proposal is decided to be voted on, it is called a referendum. Click on the referendum you would like to vote on from the list of referenda. 

> On the right side of the [referendum](https://crab.subsquare.io/democracy/referendums), you see a module that will allow you to vote on the referendum with your staked governance tokens (CRAB). To place a vote, you will send an on-chain transaction.

> Once the voting period is over, you will see the result of the referendum in the same module that you voted through.








Guide: How to use the SubSquare platform for Crab Network Governance?

Dear Community,

Since the Crab 1221 Runtime Upgraded, please note that you’ve needed to **manually withdraw unbonded assets** after the 14-day unbonding period in Darwinia Apps. (This is the same design as Polkadot and Kusama. We switch to the default Currency pallet of Substrate to make it more compatible with parachains.)

- Series Articles

> [「Using Darwinia Tools 3–8」Darwinia Apps Guide Part Ⅰ: Account](https://medium.com/darwinianetwork/using-darwinia-tools-3-8-darwinia-apps-lite-guide-part-%E2%85%B0-account-ae9b3347b3c7)
[「Using Darwinia Tools 3–9」: Darwinia Apps Guide Part Ⅱ: Staking and Earning](https://medium.com/darwinianetwork/using-darwinia-tools-3-9-darwinia-apps-guide-part-%E2%85%B1-staking-and-earning-7cd586315f76)
[「Using Darwinia Tools 3–10」: Darwinia Apps Guide Part III: Frequently Asked Questions (FAQs)](https://medium.com/darwinianetwork/using-darwinia-tools-3-10-darwinia-apps-guide-part-iii-frequently-asked-questions-faqs-4dddf1b46ed2)

Crab 1221 Runtime Upgrade Common Question— Need to Withdraw Unbonded Assets Manually

Hello Support 
I can't see available RING balance in account tonight . is this a bug?
Regards



can't see available RING balance in account tonight 

I am a DApp developer, and I wanna get some CRAB and try to develop on Crab, is there a faucet to get CRAB?

Does anyone know how to get some CRAB?

Is my current understanding correct?

[Crab Network](https://crab.network/) is a canary network with real economic value for [Darwinia](https://darwinia.network/) Network.

There are three types of chains in the Crab Network:

- Crab Smart Chain which is Ethereum-Compatible;
- Crab Parachain which won the 22nd Kusama Parachain Slot;
- Crab Chain based on Substrate.