Announcing Parallel Chain Auction Rules ｜ April Polkadot Ecological Monthly Report

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Join the PolkaWorld community and build Web 3.0 together!

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• 1. Technology/product progress

• Final adaptation and adjustments for Karura launch

• Update cross-chain interaction code

• Implement RPC for Acala EVM estimated resources

• Small-scale code refactoring and tweaking

• Updates to the latest Substrate and Cumulus versions

Adapt to ChainSafe Ethernet cross-chain bridge

• Acala plug-in module new UI design

In development:

• In development:

• Acala Loan module new interaction

• Support walletconnect protocol

Support walletconnect protocol

2. Cooperation progressCompound ChainOn April 7th, Acala announced that it will be integrated into

, and realize cross-chain interaction - Starport (interstellar station). The proposal was posted to the Compound forum and received a lot of positive responses from the community. In the future, Acala will bring Compound's services and CASH (the interest asset collected by Compound's lending business) to the Polkadot/Acala ecosystem, and introduce DOT and LDOT into Compound's latest encrypted asset market as their new collateral.Bit.Country April 9,

The team announced that it has achieved cross-chain interaction and has successfully connected to the Acala network.On April 15th, Acala and Xianxing.com Karura have cooperatedWell-known security research company Gauntlet

Reach a strategic cooperation. Gauntlet will design a series of risk control models focusing on financial data, such as debt solvency and asset efficiency, for Acala and the Pioneer network Karura, which will soon be launched on the Kusama network. In the future, the model will be further expanded and optimized for use in the Acala network.

On April 21, Acala Pioneer Network Karura, as the one-stop DeFi platform of Kusama Network, has taken the lead in integrating Chainlink’s price feed service, which will provide developers of Karura network smart contracts with tamper-proof, safe and accurate financial services on the chain. market data.

3. Community Activities

On April 2, Acala & Karura co-founders Bette and Growth VP Dan shared online an overview of the Kusama and Polkadot parachain slot auction process and details.On April 3rd, Acala released"This article takes you to understand Karura, the Kusama DeFi center"

, about the basic functions and competitive advantages of the Karura network, and about Karura’s ability to bring users a fast asset swap experience, a robust decentralized asset lending experience, a rich liquidity mining experience, and a safe release of Staking liquidity experience, etc. .

On April 7th, Acala released Polkadot Science, which quickly takes you to understand the basics of Polkadot parachain auctions in 8 minutes.

On April 13, Acala co-founder Ruitao and Growth VP Dan jointly demonstrated how to play the Karura network DeFi function.

On April 14th, Acala released Polkadot Science to take you in 3 minutes to understand how Polkadot addresses work.

On April 14, Acala co-founder Bette was invited to attend BlockDown 4.0 to share how Web 3.0 builds the next-generation Internet.

On April 14th, the Acala Chinese community opened a dialogue AMA series, and invited the head of Xiami Mining Pool, an early contributor to the Chinese community, Polkadot community KOL @cretaceous small shrimp, to explain Acala from the perspective of Acala users and community contributors.

On April 15th, Acala Growth VP Dan was invited to attend BlockDown 4.0 to share Polkadot parachain slot auction rules and an overview of Acala/Karura auction rewards.

On April 15th, Acala released the Polkadot DeFi Demo Day review. Acala also attended Snowfork, Interlay, Acala, Centrifuge, Moonbeam, Phala, Plasm.

On April 19, DRF will join hands with Acala to explore and jointly deploy the first DeFi+NFT basic application in the Polkadot ecosystem.

On April 22, Bette, co-founder of Acala, attended the 2021 Fuqua Blockchain Conference held by the world-renowned Duke University MBA Blockchain Club, and shared with Duke University finance professor Cam Harvey and industry leaders how blockchain technology innovation can disrupt and change existing industries.

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DEX Protocol

• 1. Technology/product progressZenlink launched successfullyFirst public beta!

• Zenlink's strategic partners (Bifrost, Phala, and ChainX) have given Zenlink great support, not only integrating Zenlink DEX Protocol and accessing Zenlink's local test network, but also completing the first large-scale parachain practice in the Polkadot ecosystem. business test.

• Zenlink DEX Protocol v0.3 released! Adapt to the latest XCMP code, provide multiple Transactors, and reuse the official XCM-Handler, which greatly improves the versatility.

• In addition, Zenlink DEX Protocol v0.3 has also improved in the following aspects: support for unified asset standards (Native Currency, Zenlink LP Token and Other Assets); increase the minimum amount in the whitelist, and block transfers below Parachain Existential Deposit trade.

• Polkadot Scanner Finally, in response to some users encountering "transaction exceptions or timeout failures" during the public beta, we timely optimized the protocol layer code for Zenlink DEX Protocol v0.3, which greatly improved the liquidity of cross-chain transfers, Swap, and injection/withdrawal Wait for the success rate of operations on the chain.complete upgrade

• . Now it is possible to record the user's transaction activities on multiple Parachains and perform business integration. This will provide a solid foundation for the next stage of intelligent routing.

• The new version of the public API continues to optimize the infrastructure to provide stable and robust services for the upcoming public beta.

• After the first round of public testing of the Zenlink DEX testnet, we received inquiries from multiple Polkadot parachain project parties. In the face of different parachain architectures, in addition to continuing to optimize the Dex Module solution, we will also upgrade the Smart Contract solution to the latest version.

DEX DApp

• Zenlink DEX DApp The public welfare parachain Statemint has recently been integrated and tested on Rococo V1. The main function of this parachain is to provide asset modules for various project parties to issue and manage assets. Since its asset standard is consistent with the standard adopted by Zenlink, it means that all assets issued on Polkadot in the future can be traded in Zenlink.v0.4 successfully completed the first public beta!

• We have optimized the status processing logic of cross-chain transactions, so that users can track the transaction status in real time and accurately, and understand the flow of each asset; optimize the loading speed of the homepage and user guidance pages, and solve the link problem between DApp and PolkadotJS wallet .

• In addition, a new recommendation and point system has been added to encourage users to share in the community and obtain their own exclusive points; the Chinese and English texts have been further optimized and unified to help users understand the concept and basic usage of cross-chain DEX more clearly; we have also optimized The Welcome page and the entire i18n layout enhance responsive design.

• At the same time, DEX DApp v0.5 is also under intensive development! At present, the independent module of cross-chain transfer has been completed. With the help of this module function, users can conveniently transfer, split and pool various assets between various parachains.

Next, we will develop cross-chain intelligent routing functions to help utilize assets more efficiently and obtain more favorable prices.

2. Ecology/cooperation progress

3. Community/Activity Progress

Community Dynamics

Community Dynamics

On April 6, Zenlink officially announced that it will issue 1,000 limited-edition community NFTs, and use the NFT as a carrier to endow it with community attributes and economic attributes. In the future, it will cooperate with relevant platforms to complete the creation and distribution of NFTs.https://zenlinkpro.medium.com/an-exploration-on-nft-and-new-community-membership-management-2c0b3472c52c

Medium article view:https://twitter.com/ZenlinkPro/status/1381806784495554563?s=20

On April 13, Zenlink officially launched the Beta version based on the local test network and launched the first public test, and released related activities and test tutorials at the same time. In this public test, the Zenlink DEX Module has been successfully integrated into the local testnets of cooperation projects such as ChainX, Bifrost, and Phala, and cross-chain asset transactions have been realized in the Zenlink Beta version. View related content on Twitter and Medium:On April 14th, PolkaWorld issued an article"Web3 Foundation Announces the Ninth Batch of 48 Grant Projects!" "

, Zenlink is among them, this W3F Grant is the third W3F Grant obtained by Zenlink, and the delivery is about to be completed.

On April 16, Zenlink released a letter to the community about Zenlink's first public beta, and made a comprehensive phased summary of this public beta.At present, the parachain test network Rococo has launched the public welfare parachain Statemint and started testing asset issuance. On April 21, Zenlink issued a test token on the Statemint test network, and the projects that issued the test token also included Acala, ChainX, Bifrost, etc. For the latest developments in Statamint, please check:

"Rococo's latest progress: the public welfare parachain Statemint testnet has been launched! "On April 23, Zenlink’s official WeChat public account issued a postOfficially announced the list of winners of the first public beta event and the signature verification tutorial for collecting the Ethereum addresses of winning users. This public beta event produced a total of 1186 Top Winners (including bug reward users), and achieved good results.

Brand activities

On April 6, Guo Tao, head of Zenlink China, attended the first Polkadot DAO Alliance (PDA, Polkadot DAO Alliance) joint meeting, live review: Polkadot DAO Alliance First Joint Meeting (Part 1) - Democratic Governance.

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Bifrost Dapp

• 1. Technology/product progress

• Upgrade the Bifrost subql api, optimize the results of Dapp-related data interfaces, and solve a series of problems such as too small assets and real-time balance updates; deploy Bifrost Playground on the SubQuery official website to demonstrate Bifrost Dapp interface use cases.

• Created a telegram-faucet that can support the collection of ASG, DOT, KSM, and ETH 4 test coins, which can be used for testing in apps.bifrost.finance. At the same time, it has added BNC main network certificate data reading, and users can use it in the Dapp beta version See the real number of BNC main network certificates.

Bifrost SALP 

• Improve Dapp defects based on community Bug feedback, fix issues such as transaction records, market prices, revenue distribution, and Flexible fees, and adapt to Mobile.

• Update the Substrate code update and merge, develop the runtime module, complete the product logic of the Kusama slot auction page, and synchronize the front-end for API interface development and docking.

Describe the function of SALP, add subscription function module and SALP API service development and access; submit Bifrost SALP grant, add SALP chapter in Bifrost Wiki.

2. Community/Activity Progresshttps://subdao.medium.com/d984093f285

The overseas Panel Current DAO Governance Status and Future Prospects held by SubDAO was held on the afternoon of April 7th. Bifrost Product Manager Tyrone was invited and published his vision for the future of DAO and the application of DAO. Details:https://vtoken.io/drop

On April 9th, the Bifrost vETH Hold Airdrop event ended. A total of 10545.177 vETH participated in the airdrop, and the conversion ratio of vETH to ETH also rose to 1:0.904506. During the same period, you can also participate in vETH DODO liquidity mining activities, details:https://apps.vtoken.io

On April 13, the Beta version of Bifrost Dapp was launched. Bifrost Dapp is the official interface for all Bifrost services. Users can conveniently realize the casting, redemption, exchange, cross-chain and other operations of derivatives, and can also check their derivatives assets and income in real time. Details:https://mp.weixin.qq.com/s/ACkOPf9gZOpIhks5oSlXSA

I am very glad to see Zenlink, a partner of the Polkadot ecosystem, has released a public beta version of DEX. Bifrost and Zenlink have established cooperation in the vToken derivatives liquidity pool and integrated Zenlink dex module to support asset cross-chain. In the simulated trading competition in the first public test of Zenlink, the faucet received the test token BNC as the exchange currency for test transactions. Details:https://opensea.io/assets/0x8cb813bf27dc744fc5fb6ba7515504de45d39e08/27

Bifrost has reached a cooperation with PolkaPets, an NFT collectible card project, and will sell Bifrost PolkaPet NFT on BondSwap at 4 am on April 17, Beijing time. The price of each collectible card is 0.15 ETH. At present, some Bifrost PolkaPet NFTs are still on sale, details:https://vtoken.io/drop

The vETH DODO liquidity mining activity ended. During the activity, a total of 147 people provided ETH/vETH liquidity and obtained 262.007 DLP, and 688 people activated the activity. 600 users participated in the vETH airdrop, and a total of 1647 people activated the activity. The event rewards will be distributed to the event binding address on April 19th, details:

Bifrost Product Manager Tyrone confirmed that he will give a speech on the topic of Bifrost PLO Liquidity Protocol on Polkadot Decoded on May 20, sharing about the liquidity of KSM slot bidding and the benefits it brings to the Polkadot ecosystem.https://mp.weixin.qq.com/s/-XcyxJYzhfqnDwYMlxXh2Q

On April 19th, Bifrost and SubQuery reached a cooperation to provide developers with productized infrastructure, multifunctional data, API insight and analysis services. Details:https://mp.weixin.qq.com/s/Zg_LVe8z-BeJ72UrJWCplQ

Bifrost and Patract have reached a strategic cooperation. The professional tools and technical support provided by Patract have provided Bifrost with friendly support and assistance in Wasm contract support. Details:https://mp.weixin.qq.com/s/gyQkh0UxxfD4IbNfHehoKA

On April 21st, Bifrost released the slot bidding liquidity protocol SALP, which releases the liquidity of KSM/DOT locked in Crowdloan by users by generating derivatives. The purpose is to greatly increase the capital utilization rate of crowd lending participants, and provide opportunities to participate in crowd lending without lock-up, thereby increasing the probability of successful bidding in parachains and reducing the cost of parachain bidding. Details:https://www.ximalaya.com/shangye/16947515/408236051

On April 21, the OKEx Intelligence Agency invited Bifrost co-founder Lurpis to be a guest of OKEx Big Guys Zero Distance, and shared with friends the theme of KUSAMA card slot auction is ready to go, how Bifrost outperforms the release of liquidity track, details:https://app.dodoex.io/mining

On April 28, the Bifrost brand was newly upgraded, from concept to performance, from impression to application, making Bifrost's brand system mature in all aspects, and looking forward to establishing a clearer and stronger brand consensus with users. Details: https://mp.weixin.qq.com/s/9dgrMmqC8Oe2oUktySUsqA

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1. Technology/product progress

• On April 2, StaFi released the 2021 Q2 work plan, which will focus on the following three tasks:

• Release rDOT/rKSM/rATOM products and expand the rToken product matrix;

• Launched rToken transaction pair liquidity mining incentives.

Details:https://mp.weixin.qq.com/s/shNvwQjUOwCk6YkJBKZywg

On April 22, rKSM, Kusama’s liquid staking product, was officially launched on the mainnet. Currently, the annualized return of KSM pledged through the rKSM App is about 16%, which maximizes staking returns for users while enjoying friendly liquidity . Currently rAsset App already supports rKSM, users can use rAsset to mint rKSM in ERC20 format and trade on Uniswap.

Details:https://mp.weixin.qq.com/s/-5bvqhhub34BsoJJO-bSgg

Details:https://mp.weixin.qq.com/s/EYsseVRzMhD8xItIxkzA5A

On April 27, StaFi officially launched rDOT, Polkadot's liquid staking product. Currently, the annualized return on staking DOT through the rDOT App is about 14.9%. While maximizing staking returns for users, users also enjoy friendly liquidity. rAsset App is a StaFi rToken asset management product. It has integrated rBridge and supports converting rDOT into ERC20 format to enter the Ethereum ecosystem. Details:

On April 28, the StaFi rToken asset management product rAsset App was officially launched on the mainnet. Now rToken holders can manage rToken assets through the rAsset App, such as checking the number of rTokens, the total value of rToken assets, and the number of redeemable assets. At the same time, rAsset App has integrated rBridge, and rToken holders can freely convert rTokens between the StaFi chain and the Ethereum chain through the "Swap" function, and use the "Trade" function to directly trade rTokens on Uniswap. In the future, StaFi will continue to update the rAsset App, so as to provide rToken holders with better and better product experience.

On April 12, StaFi announced the list of 2021Q1 validator Grants. There are 5 validators who have received Grant this time. We thank them for their great contributions to StaFi. At the same time, the new validator Grant standard will be implemented in 2021Q2.

Details:https://mp.weixin.qq.com/s/hbDQdBL3RF29W6GrJO_2Tg

Details:

As of April 16, 10,000,000 StaFi mainnet FIS has been converted into ERC20 format through rBridge and entered the Ethereum ecosystem, with a total value of about 33 million US dollars. This is another milestone in the development of StaFi!

Details:https://twitter.com/StaFi_Protocol/status/1382982175528607747

On April 29, in order to improve the liquidity and users of rETH token, StaFi launched a proposal to add rETH/ETH trading pair on Curve. According to data from DeFi Pulse, Curve is the second-ranked decentralized exchange with a TVL of $5.9 billion on Ethereum, and only a limited number of mainstream assets have trading pairs on it. If the proposal is passed, the liquidity and usability of rETH will be greatly improved, which will be another important milestone in the development of StaFi rToken.

Voting link:https://signal.curve.fi/#/curve/proposal/QmQhtTLKeVCgkNFggbvCuDrsismYN3oPRrGzCxTuxitVCM

Voting link:

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ChainX 2.0

• 1. Technology/product progress

• Implement Bscdot and complete the cross-chain between Binance Smart Chain, Polkadot and ChainX

• btc-relay updates, filters and reports all vault-related cross-chain transaction functions

• chainx-scan updates logic for filtering transactions

• Research to provide Bitcoin price feed function for XBTC 2.0 through chainlink feed pallet

XBTC 2.0

• Update the English version of the verification node operation document

• Add the opreturn function, XBTC 2.0 increases the user's interest rate function

• Completed the account global switch, Polkadot address to ChainX address, initiated the issuance of X-BTC transaction function through the plug-in, and imported the data in the historical record

Platdot

• xbtc 2.0 front-end beta page is online

• Implement the Platdot testnet faucet, and further improve the functions and logic of Platdot

• Refactored part of the code of version 1.0

• Use oss cdn acceleration for platdot website

• According to product requirements and design drawings, add currency switching function, add XBTC transfer option

Since XBTC transfer is not compatible with latest polkadot api version, inject new type

2. Community/Activity Progress

On April 8, 2021, ChainX launched the halving NFT design contest. In order to thank the community for its support for ChainX over the past two years, 100 limited edition ChainX halving NFTs will be launched to honor community members who have made important contributions to the community.

On April 8, 2021, ChainX announced the Kusama parachain slot auction rules. SherpaX (token KSX), as the leading network of ChainX (token PCX), will participate in the Kusama parachain slot auction. The total amount of KSX is 21 million pieces , 1:1 airdrop to PCX holders and users who support the SherpaX parachain auction.

On April 12, 2021, PLAtDOT launched a comprehensive public beta in the ChainX community, and ChainX helps link Polkadot and the PlatOn ecology. The cross-chain solution provided by the Platdot project can enable PlatON to realize interconnection with Polkadot, which has advanced cross-chain technology and a prosperous ecology, so as to break the island effect, realize cross-chain complementarity between the two, and ecological prosperity.

On April 23, 2021, Coming will recruit genesis testers in the ChainX community. Participating in the Coming test requires outstanding performance in terms of holdings, activity, and loyalty. Obtaining the right to test will also give priority to the right to pre-register Coming DID.

On April 26, 2021, PlatDot's latest testnet supports XBTC transfers, realizing the intercommunication between XBTC and PLAtON. XBTC cross-chain enters the PlatON network, will circulate freely in its ecology, and will be applied to financial derivatives such as DEFI to enrich its Bitcoin derivatives ecology.

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• 1. Technological progress

• DVM mapping-sync-worker is refactored to support mid-way access of nodes to Evm pallet.

• Kton Precompile successfully connected to Smart Apps.

• Ethereum Bridge Berlin Upgrade Compatible

• Darwinia/Crab is upgraded to the latest version of Substrate to synchronize with the progress of Polkadot, and related infrastructure software upgrades

• Complete the third-party ERC20 Token registration agreement, and start testing and wormhole support

• Research and Design Substrate, Ethereum Clique(BSC, Heco) Bridge Scheme

The Darwinia Crab network has been upgraded to support DVM and Ethereum smart contracts, providing DApp migration and entry into the Polkadot ecosystem. (Related official account article link: https://mp.weixin.qq.com/s/ZEjs9_VTu2mwHL5QgJZAEg)

2. Cooperation progressGamyFi gaming platform enters into strategic partnership with Darwinia Network

, to jointly explore Defi + NFT applications. GamyFi is a blockchain-based ESports and gaming platform that incentivizes the skills and knowledge of gamers and sports fans through the Polkadot ecosystem and multi-chain scalability system. GamyFi will be launched on multiple blockchains. As part of the partnership, GamyFi will be built on the Crab Network, Darwinia's canary network. Crab is the first cross-chain NFT chain in the Polkadot ecosystem. Crab is EVM compatible, enabling easy integration for GamyFi users on Ethereum.We are pleased to announce,Clover Finance and Darwinia Network reached a strategic cooperation

, the two parties will jointly explore solutions for heterogeneous chain cross-chain assets, and introduce more public chain assets such as Ethereum and BSC into the Polkadot ecosystem.

• 3. Community progress

• Darwinia CMO Bree participated in a series of sharing activities, including: Seeing the Potential and Co-Building Web 3.0 - the first online roundtable meeting of the South Korean Polkadot Alliance

• Parity & Friends Technology Sharing Session, the theme is The path of a cross-chain mapped token

• Darwin Overseas Community 3rd Ambassador Online Chatfest

• "Acala, Darwinia, Plasm's Kusama Parachain Auction Investment Cryptography" Bihu Live Event

• "Encrypted Habitat·Extreme Era NFT·CRYPTOULTRA Explore the True Value of NFT in Chaos" Forum

• The "Darwin Parachain Auction Investment Opportunities" AMA event hosted by the DeFi seven o'clock community

• "NFT meets Polkadot National Tour" offline event Beijing Station hosted by Liandu

4. Evolution Odaily

technological progress

• technological progress

• Based on the development of the Heco chain, the evolution of Odaily's Heco test network in the fourth continent has been deployed and community testing has begun

• The evolution of Odaily developed based on the Crab chain, the third continent Dawning completed the contract deployment

• Evolution based on BSC chain development Odaily Fifth Continent completes map development

• The filtering function of evolution Odaily plots, apostles, and props has been completed

cooperation progress

• cooperation progress

• Evolution Odaily The continent built on the Heco chain participates in Hackerlink activities. After the mainland goes online, players who support the evolution Odaily will be provided with corresponding rewards.

• Evolution Odaily will conduct preliminary communication with Avalanche on future cooperation opportunities.

• Evolution Odaily has applied for the Builder of Builder Program and will conduct preliminary communication with Parity in May.

community progress

• community progress

• Preheating for the upcoming land auction in the new continent, Atlantis will open 10 lands for auction rehearsal! Come and shoot land to get points, participate in the lottery, and share millions of RING prize pools! The activity time is from April 29th to May 8th, 2021. The starting price is 5,000 RING, and the closing price is 10,000 RING. The Dutch auction method is adopted, and one plot will be released at 10:00 every day!

• smart contract

Shiden Network

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Implementing the Ethereum Virtual Machine and WebAssembly on the Shiden Network will allow the two virtual machines to interact. Besides, we are developing “Ethereum⇔Polkadot” and “Cosmos⇔Polkadot” bridges, and there will be big updates soon. Please stay tuned!

Propose a new profit model for developers

We believe dApps developers are the most important members of this ecosystem. Therefore, we encourage everyone to develop dApps on Shiden and Plasm Network. In this new model, we have added a basic income for dApps developers. This function has been realized so far, and Shiden will support this function first after becoming a parchain. See details: https://forum.plasmnet.io/t/plasm-reward-v2-improvement-dapps-rewards/1015

Shiden Network Waitlist

In addition, our future transaction fees will be paid in DOT, ETH, and PLM. See details: https://forum.plasmnet.io/t/payment-transaction-fee-without-plm/1016

We've closed the waitlist for the Kusama auction with over 3000 people signing up in 6 days. We are excited to meet them at Parachain Auctions. https://medium.com/plasm-network/shiden-network-build-up-part-i-87931038a317

Create a bridge between Cosmos and Polkadot

The Plasm network creates a bridge between Cosmos and Polkadot through the Secret Network (a Layer1 blockchain with consensus and on-chain governance built on top of the Cosmos/Tendermint framework), and we will connect the Cosmos ecosystem with Polkadot!

host a live broadcast

text

cooperate

cooperate

Announced Shiden Network's Kusama auction strategy: https://forum.plasmnet.io/t/rfc-kusama-parachain-auction-strategy/1058

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Redspot

• 1. Technology/product progress:

• Finish writing the proposal of Redspot v0.4, cooperate with completing the review of Redspot v0.3.

• Implemented in the v0.4 proposal this month, Docker compilation, chain types, multi-contract compilation control, file watcher

Ask！

• UI interface development for Redspot browser. It is estimated that 80% of the functions in Redspot v0.4 have been completed.

• Framework: Design and implement the StorableMap class, implement the self-enumerable Map storage, implement the StorableArray class, refactor the Storage part, and complete the implementation of the @packed annotation. Fix the bug in the implementation of @event

• Preprocessor:

• Compiler: All compiled extension codes are migrated to Ask! , completely isolated from ASC; the inheritance expansion reference file has been completed, and the solution contract code must be in the same file.

• Ask! Inherit development and optimization, in Ask! Globally import objects Msg, Storage, etc. By defining the interface, realize the cross-contract call and start the development. Continue to develop cross-contract calls through interface calls, and code generation is basically completed.

Europa

• Start to develop and use Json to generate metadata.json.

• Europa v0.3: Completed Europa product prototype design. Submit a development proposal for Europa v0.3

Europa v0.2: Europa v0.2 Code Review is over. Corrected the problem of parsing failure in the Name Section of the compiled Wasm file due to the upgrade of the Rust version; corrected the problem of missing SS58version in Metadata, increased the maximum contract code limit to 4M, and lifted the contract size limit in the next version;

Elara

• Ceres: Support for custom storage interfaces. Support for Wasmtime. Support for std / no_std conditional compilation. Support all Host Functions of Pallet-Contracts. Support custom Runtime-Interface. Ceres has currently iterated 5 versions and completed the Beta version of the Ceres command line tool.

• The new official website has been launched, and the brand-new interface system displays user usage data more clearly than before.

• Fix the problem that KV message subscription is not cancelled. Fix the problem that the memory of Websocket disconnection is not cleared. Added PM2 process status monitoring and chain health status monitoring. Fixed the bug that the long-term subscription link returned empty data.

• Added a Polkadot node and kusama to provide more powerful concurrency capabilities. Added support for Westend.

Patracts Pallet

• During this month, the nodes of polkadot.io were unable to provide services due to abnormalities. During this period, Elara's relatively small resources undertook the main traffic, which proved the superiority of the system behind Elara (Elara is not behind a simple node cluster, Instead, it uses Patract's self-developed technology).

• Created a new warehouse https://github.com/patractlabs/patracts to implement the new contract specification developed by Patract.

• Design the contract mortgage model, adopt the billing method of byte + storage pair, each time the contract is created/called, the deposit will be deducted from the caller's Gas Fee when the storage increases, and the storage deposit will be stored in the public mortgage pool, and the storage will be reduced and the return will be reduced Store the corresponding deposit to the caller.

Preliminary implementation of the contract mortgage model, in the debugging and verification stage, it is expected that it will be open to the public for testing.

• Contract Storage Mortgage Model

• Discussed the advantages and disadvantages of the current contract storage mortgage model with Parity official developers, discussed the decoupling of the upper layer ink! language function and the underlying leasing model, and participated in planning the future development direction of this module.

PatraScan

product

• product

• Summarizes all Extrinsic and Event types.

• Complete the Substrate storage structure documentation.

• Complete the Substrate streamlined class diagram.

• Draw prototype pages related to account details, democratic governance, and parliament in PatraScan, and write corresponding API documents.

rear end

• rear end

• Add Treasury-related APIs.

Patract-Archive

• Restructured PatraScan backend architecture according to Patract-Archive.

• v0.1 version (based on Rocksdb storage version)

• Refactor the Actor model to make it decoupled and componentized, and add the Dispatcher component for message distribution (such as Kafka). Add the missing storage of the original Genesis block, add Child Trie related storage, and add Finalized Block data

• Debug and fix issues with v0.1 release.

• v0.2 version (based on substrate source code)

• Use --chain to specify and adapt Genesis Json files of Dev and DOT

• Using a method similar to macro expansion to generate code, without relying on Runtime, re-implementing the minimum set required by Mock Runtime

After the end of Block Import, write DB and MQ, including Blocks, Storages, Version, Metadata

• 2. Ecology/cooperation progress:

• Patract will support the privacy DeFi protocol Manta Network to integrate Wasm contract functions.

• Litentry develops the ink! contract based on Patract's Redspot and Europa products to expand the identity service ecosystem.

• Polkadot’s unsecured lending platform Bandot has joined the Patract Wasm contract open platform.

• OpenSquare and Patract will cooperate to develop a multi-asset Gas mechanism.

• Patract has reached an in-depth cooperation with Plasm to popularize the Wasm contract development tool suite.

• Bifrost joins the Patract open platform and plans to integrate Wasm contract functions.

• Patract has reached a cooperation with Polkadot DAO infrastructure SubDAO.

• Standard reached a strategic cooperation with Polkadot Wasm smart contract platform Patract

Zenlink announces to join the Patract open platform and cooperate to upgrade the Wasm contract version

3. Community/activity progress:

On April 1, Lipeng Yue, the founder of Patract, was invited to participate in the Polkadot Beijing NFT special Meetup roundtable session, and discussed with other guests the challenges faced by the development of NFT and the advantages of choosing to develop NFT in the Polkadot ecosystem.

On April 1, Lipeng Yue, the founder of Patract, was invited to participate in the first joint meeting of the Polkadot DAO Alliance.

On April 9th, the first issue of PatraShare, Patract's CTO, Aten shared how to "get started with ink quickly! Smart contracts".

On April 11th, Patract participated in the offline event of Shanghai "Together, Innovation Conference".https://docs.patract.io/), which is being continuously updated, please check it out.

https://docs.patract.io/), which is being continuously updated, please check it out.

In the second issue of TechShare on April 23, the lecturer Patract CTO Aten and everyone explained and practiced "ink!'s primary practice (Solidity paradigm)".

On April 27th, Yue Lipeng, the founder of Patract, gave a lecture on the 32nd issue of Babbitt Academy's open class. The theme was "Gavin Wood's mental journey from the comparison of the current situation of Polkadot and the white paper".

On April 29th, Yue Lipeng, the founder of Patract, was invited to participate in the "Privacy on Polkadot" online keynote speech event initiated by ZKValidator, and participated together with privacy-oriented projects in the Polkadot ecosystem.

secondary title

• 1. Internet

• Successfully connected to the Rococo test network, and completed local testing and updating

• Complete the Clover network code upgrade, open the POA mode, close the pledge, and optimize the release mechanism of the chain

• Improve the parachain slot auction pledge logic

• Complete the development of the Sakura network, which will be released soon

Complete the docking of the Claim module on the Clover chain to the BEP20 contract, and deploy the Fix solution for EVM data synchronization

• 2. Cross-chain function

• Realize cross-chain bridge function implementation and testing, cross-chain monitoring background

• Complete the cross-chain mechanism design, and realize the cross-chain watchdog mechanism, cross-chain service design and better GAS fee mechanism

• Complete the development and deployment of cross-chain contracts, including mainnet token contracts and Bridge contracts

• Complete cross-chain (on-chain) support for multiple chains, main network service deployment

Complete Clover-ETH, Clover-BSC cross-chain module (on-chain) support, docking on-chain modules, contract deployment

• 3. Plug-in wallet

• Released plug-in wallet 1.0.5 (Beta), supporting Heco and Edgeware

• Released plug-in wallet 1.0.6 (Beta), supporting two-way cross-chain from CLV to BSC

• Released a new version of the plug-in wallet 1.0.8 (Beta), which supports two address formats

• Basic implementation of plug-in wallet webpack packaging

• Solve Metamask conflicts, optimize balance and account switching, and add Clover customized Dapp interaction support

• Release the beta version of the Rococo version of the plug-in wallet

The wallet initially supports Ethereum cross-chain

• 4. APP Wallet

• Complete the mobile wallet to complete the account creation and import process, back-end API construction and docking

• Complete the interactive function of Clover wallet and Polkadot Dapp

• The mobile wallet completes basic functions, including accounts, assets and transfers, etc.

Add full nodes such as ETH and BSC, synchronize block monitoring, and support wallet upgrades

• 5. Ecological progress

• Invited to participate in the AMA held by PolkaWarriors in the Vietnamese community, and elaborated on Clover's future plans

• Reached a strategic cooperation with the popular NFT game MyNeighborAlice, and will jointly explore the application of NFT tokens in MNA games in the Polkadot ecosystem

• Completed the public offering on Coinlist, more than 400,000 independent users participated, and completed a fundraising of 38 million US dollars

• Invited to participate in Edgeware's online AMA event held in overseas communities

• Reached a strategic cooperation with Fantom to jointly explore the boundaries of cross-chain DeFi

• Reached a strategic cooperation with Darwinia Network to jointly explore standard protocols for heterogeneous chain asset cross-chain

• Reached a strategic cooperation with MathWallet to jointly empower the application of cross-chain assets in the Web3.0 era

• Together with zCloak Network, MathChain, Apron, Stone and other high-quality ecological projects, join the Polkadot DAO alliance, and will work closely together to promote the Polkadot ecology

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Technology/Product Progress:

Technology/Product Progress:

1. The preview network Maxwell has been running stably for 3 months (the current block height has reached 1.3 million), with a total capacity of 595 PB.

2. In the Web3 ecosystem, platforms including Uniswap, Polkadot Apps, and Cold Stack have used or integrated the Crust network.

3. Under the Web2 ecosystem, C-end applications such as Dainiukuaichuan, which has 45 million users, and B-end applications such as road traffic impact and electronic invoices have successively deployed their products to the Crust network.

4. Officially launched the Crust Shadow parallel network (shadow network), which is used to participate in Kusama’s parachain slot auction. The shadow network provides storage services based on the parachain ecology, and connects the main network and the Maxwell network for data storage. See the shadow network for details Auction plan (https://mp.weixin.qq.com/s/m3OIBKT3gsuhluSnHlHl2w).

5. The on-chain protocol completed the version iteration of PoC17 and PoC18, including: the new Benefit module allows token holders to obtain fee reduction rights through pledge; complete the token unlocking function of the main network CRU18/24/24D6; complete the GPoS Stake Limit Design and implementation of pledge two-stage conversion; optimization of DSM/GPoS module parameters and some functions.

6. The off-chain protocol sWorker launched a real-time Seal/Unseal version, with a 100% increase in space utilization. The main tasks include: completing the real-time Seal/Unseal algorithm based on file blocks; realizing multi-threaded Seal/Unseal, making full use of the CPU; realizing data storage The multi-path support makes full use of hard disk resources and avoids the risk of bad disk to a great extent; optimizes multiple sub-functions of the current sWorker version.

7. Crust launched the Rocky developer test network and launched API-Docs to further help developers build DApps and various storage applications on Crust.

8. Crust Apps has released a new version 0.84, adding a claim interface for CRU18, and upgrading and function adjustments for other modules.

9. Crust sPlorer (storage browser) adds node penalty information and network-wide A/B upgrade information, and uses RabbitMQ to fix message blocking problems caused by chain instability.

10. The version of Crust API and Crust Node has been upgraded, and the problem of missing workload report caused by chain instability in extreme cases has been fixed.

11. Promoted the establishment and operation of node services and storage services of several cloud providers, including Microsoft Azure, Qiniu Cloud, etc.

13. Crust is now releasing the latest version of its website, presenting a visual effect closer to the style of the Crust project for the majority of users.

Ecology/cooperation progress:

• Ecology/cooperation progress:

• Uniswap and PolkaApps are now deployed on the Crust network. For details, see: https://github.com/Uniswap/uniswap-interface/pull/1342, https://github.com/polkadot-js/apps/pull/4933

• Crust has added a "Crust Grants (funding program)" section, encouraging developers to apply for Crust Grants to build a Web3.0 distributed cloud ecosystem. Crust Grants provides each recipient with a maximum value of 30,000 US dollars to support developers in the development of subdivided areas of the technology stack, and to obtain technical and ecological support in addition to funds.

• On April 7th, Crust participated in the first joint meeting of the Polkadot DAO Alliance for the first time to explore the current situation and future of DAO.

• Crust has entered the top three in the monthly activity of the developer community of the Polkadot ecosystem.

• Crust was selected into Polkadot Decoded, and will give a technical speech on the theme of "Web3 Decentralized Storage" on May 20, and will be the first guest speaker of Stage3.

• Crust Network officially became a member of the Teaclave private computing community under Apache. https://teaclave.apache.org/powered-by/#projects

Community/Activity Progress:

Community/Activity Progress:

At 2:00 pm on April 1st, Crust was invited to participate in the Polkadot Meetup Beijing session - NFT special event, and participated in the roundtable discussion on the theme of "Collision between Canary Network and Digital Artists under the NFT Boom".

On April 9th, Crust's first developer meeting was successfully held in Shanghai. Crust shared the latest technology, shared the rules of Grants, answered questions on the spot, and broadcast live at the same time.

On April 11, Crust was invited to participate in the roundtable dialogue "Exploring the Unknown: What is the future development of Polkadot?" hosted by Jinse Finance.

On April 13, Dean, the head of Crust products, shared knowledge about Crust technology and blockchain in the Cisco union.

Crust launches the first Crust Ambassador Program. All community partners are welcome to actively participate and deeply participate in the construction of the Crust community!

On April 23, the fifth phase of Crust Openday was successfully held in Chengdu. This Openday revolves around the latest technological progress and ecological construction of Crust.

privacy

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• 1. Development progress

• Phala Netwrok PoC-4 is officially launched, introducing the trust classification mechanism for the first time, using the latest version of Substrate code, and improving the PoC-3 stage problem.

• Improved the documentation of the mining pool management system Runtime Bridge; (Repo: https://github.com/Phala-Network/runtime-bridge)

• The two-way token exchange scheme based on Chainbridge's ETH and Phala chain was tested internally.

• pDiem has implemented a number of major updates: Wiki updated the "Play with pDiem" tutorial; created Diem account and signed transactions in pRuntime; realized withdrawal and sub-account management.

• Fix the problem that miners were frequently slashed in the PoC-3 stage;

• The Zenlink DEX Module has been successfully integrated into Phala's local test network, enabling cross-chain swap of PHA assets on Zenlink's local test network;

• Determined the technical solution of PHA token two-way bridge Phala chain to ETH ERC20 bridge;

The dark wallet application has been reconstructed and is compatible with the parachain environment.

2. Community/ecological progresshttps://mp.weixin.qq.com/s/1iaLE_8Q2LjlgUsxW6LtWA）

On April 30, Phala announced its participation in the Kusama parachain auction strategy: no new coins will be issued, and 1 KSM contribution can be exchanged for 100 PHA. Khala Network, the preparatory main network of Phala Network, provides a prize pool of 15 million PHA for this auction. Users can pledge KSM for Khala through the Khala Crowdloan Dapp and exchange cooperation channels. In addition, as the native token of the Khala network, K-PHA, ERC20-PHA and Phala's future main network PHA can be exchanged 1: 1, which is the Kusama version of PHA. Read the original text for details (

The topic "XCMP Makes Privacy Computing Interoperable" submitted by Phala to Polkadot Decoded 2021 won a speech seat, and Yin Hang, Phala's chief researcher, will attend;

On April 9th, Phala Network was launched on the Korean exchange Coinone, opened the KRW trading market, and supported PHA/KRW trading pairs;

According to the monthly data report released by polkaproject.com in the first week of April, Phala is one of the fifth active developer communities in the current Polkadot ecosystem;

Phala launched the "Code Bounty Hunter" campaign (https://mp.weixin.qq.com/s/kU62ODZ69fdTXDVZL9dxxg), so far two bounty hunters have submitted code, one has submitted the miner monitor code, and the other Completed Phala wiki front-end issue fixes;https://mp.weixin.qq.com/s/tkW3tv45a7us6t1pPYx5Fg）

The Phala community launched the Chassis Modification Contest, giving every miner who has a modification dream a platform for display and communication among players. The event prize pool is 1000PHA+;(

Open Phala Medium's Korean Publication account; set up and open the social-media section in the Discord channel for a limited time.

As of 23:59 on April 30, the total number of Phala global communities is 111,591.

In April, a total of 11 translation manuscripts were received from translators from minority language communities.

3. Market/event progress

On April 23, the first offline meeting of Phala miners was successfully concluded in Chengdu. At the meeting, Phala COO Wang Zhe explained in detail Phala's Web3.0 vision, features, mining mechanism and latest progress to the participants, and also showed how to quickly complete the deployment of mining machines within 30 minutes. The conference attracted a total of 200+ miners, and nearly 3,000 live viewers.

On April 16, Phala Network reached a strategic cooperation with PolkaFoundry, a one-stop application platform for DeFi applications.https://mp.weixin.qq.com/s/rYeOsF1cOWMMmkJZ99eqlw)

Phala Network, as one of the co-sponsors, initiated the establishment of the first domestic autonomous organization in the field of blockchain privacy computing - the Privacy Computing Technology Alliance (PCIC) (

• In April, Phala attended the following 9 events:

• Polkadot Official Gathering "Polkadot & Friends" NFT Session in Beijing

• Dialogue on "Privacy in Polkadot" hosted by Zero Knowledge Validator

• OKEx's DeFi Fireside Chat Recording

• YPOOL "Drunken Rongcheng Mine Carnival Night"

• Participate in the ZKValidator Jobs Fair

• Vietnamese Community Voz Blockchain AMA

• infrastructure

secondary title

• Release version v2.0.4-beta:

• The new UI upgrade of the Staking module.

• The staking module adds validator screening function.

• The staking module removes operational restrictions during validator elections.

• secondary title

• Fix known bugs.

technological progress

• technological progress

• The development of parachain auction-related functions, including data processing and visualization of auctions, crowd lending, parachains & parathreads, and other functions.

• Open Rococo network parachain auction related API.

• Publish the winner prediction function of the parachain auction.

• The development of DVM module optimizes DVM account display and transaction hash search.

• Support the identity display of Sub Account.

cooperation progress

• cooperation progress

• Support MXC DataHighway main network.

• Support Dock mainnet.

• Support Clover mainnet.

• Follow Substrate progress: https://github.com/paritytech/substrate