**Work of Council**


Patract had participated in the discussion about the Polkadot Alliance Pact in the Polkadot Direction group. The Pact believes that because Polkadot is a project driven by governance  such as councillors and referenda, it is not completely controlled by static code logic and needs to maintain the interests for token holders. Therefore, Proper management of the community should not allow unethical fork projects to appear arbitrarily, such as trying to build a bridge to access in the Polkadot ecosystem, or even defrauding the Treasury or Grant for fund. 
The community is facing with complex and diversified ecological projects. Considering the community can't quickly distinguish between good and bad, multiple relay chains may appear in the community, resulting the ecosystem into a fragmented direction, which is greatly detrimental to the long-term development of the Polkadot community and Web 3.0 vision. Some Councillors believes that for decentralized blockchain projects and open source community culture, it is impossible to build a wall of friends or enemies, or to limit the convention to basic principles. Such issues should not be raised to the political level and at the referendum level, it will hinder possible innovation.
- Voted nay for  Kusama Treasury Proposal #86, because no explanation was provided.
- Voted aye for Polkadot Treasury Proposal #44, regarding the development of Redspot v0.4.
- Voted aye for Polkadot Treasury Proposal #45,  regarding the privacy-related events held by ZKV, Patract’s zkMega project will participate, and other privacy-related projects in the community are welcome to contact ZKV.

**Development**


 #Redspot
- Created a docker repository and added an automatic publishing process.
- Updated the CI, and the later version releases will be more semantic.
- Created plug-in of the Redspot types.
- Added the ability to write and throw an exception when the contract has the same name.
- Extracted redspot-template to the independent repository and updated redspot-new cli.

#Ask！

Framework
- Fixed bugs in the implementation of @event.
- Completed the implementation of @packed annotation.

Preprocessor
- Optimized inheritance development.
- In the ask , globally introduced the object Msg, Storage, etc.
- By defining the interface, completed cross-contract calls and started development.

#Europa
- Prepare to submit v0.3 proposal.
- Completed the product design.

#Patract-Archive
- Directly used the mock runtime function of node runtime to run normally.
- Removed the mock runtime of the node runtime and entered the call link of the execution block. There is a temporary storage problem at present.

#Ceres 
Ceres has currently iterated 5 versions, see https://github.com/patractlabs/ceres/blob/master/RELEASES.md for details.
- Completed the beta version of Ceres command line tool.

#Elara
- fix: the logic of not canceling the kv message subscription.
- feature: Feishu robot monitor
- Feature: PM2 error log.

**Patract Product**


 #PatraScan
- Completed 90% of the basic data structure document.
- Summarized and analyzed all extrinsic and event types, and written 60% of special display information.
- Streamlined 10% of the data structure class diagram.

#Eurapa
- Completed the prototype drawing and the writing of the requirements document.
- Supplemented to the Council proposal.


**Marketing and Opertation**


#Open Platform
Plasm Network partners with Patract. Patract will work closely with Plasm in terms of tools and services support as well as building the Wasm ecosystem. Click for View.

#Substrate Contract Book
The Substrate Contract Book is led by Patract, and its CTO Aten is responsible for writing a series of knowledge related to Substrate and the Wasm contract system. It is currently online on the official website (https://docs.patract.io/) and is continuously updated. Welcome to check. 
At the same time, We also welcome some interested developers to contribute to this book together.

#Technology Sharing
In the first issue of TechShare, Patract’s CTO, Aten shared How To Quickly Get Started With Smart Contracts of ink! .  Welcome to watch the video. Click for view.

Work of Council

Patract had participated in the discussion about the Polkadot Alliance Pact in the Polkadot Direction group. The Pact believes that because Polkadot is a project driven by governance  such as councillors and referenda, it is not completely controlled by static code logic and...

Patract Weekly Report（The 3rd Week，April）

## Development

### Redspot
* The proposal for Redspot v0.4 has been completed and we are expected to submit it next week.
* Researched the browser and the local folder communication to realize the program.
* The account signature part is being designed and rewritten, and the browser extension signature will be supported.

### Ask！
Pre-compiler Work
* Added support for @doc.
* Smart contract integration, Iterating the chain of Inheritance and generating Message has been finished.
* Completed the smart contract inheritance, relying on the expansion plan annotated in the file.

### Framework Work
* Define how the @pack mode works.
* Improve Primitive data and support Pack mode.
* Realized the StorableArray class and supported access to the array in the @storage class (partially completed).

### Europa
* Completed the prototype design of some Europa products.
* The proposal for Europa v0.3 has been completed and we are expected to submit it next week.

### Ceres
* All methods of Flipper have been finished.
* Support calling contract methods with parameters.
* Supported state storage according to the contract Code Hash.
* The storage interface has been implemented, which can be used by external platforms for persistent storage of the state of the contract.

### Elara
Completed the reconstruction of Elara’s official website.

### Patracts Pallet
* Created a new repository（https://github.com/patractlabs/patracts）to implement the new contract specifications established by Patract.
* Designed the contract deposit model, adopted the method of charging by bytes + storage items, each time the contract is created or called, the deposit will be deducted from the caller’s Gas Fee when the storage is increased, and the deposit will be stored in the public deposit pool. When the storage is reduced , Return the deposit corresponding to the reduced storage to the callers.
* Preliminary realization of contract mortgage model, it is in the debugging and verification stage.

## Patract Products

### PatraScan
* Completed the high-fidelity design drawings of related pages of blocks, transactions, and events.
* Completed the prototype design of the account browsing page.
* Relevant data modeling and analysis under the account system.
* Front-end pages development for blocks, transactions, and events.
* Add missing fields and filter conditions for blockchain and accounts API.
* Update the documentation of the API.

### Contract Storage Mortgage Model
* Analyzed the shortcomings of the storage rent model of the Substrate Contracts Pallet, compared it with the storage deposit model scheme, and outputted an analysis article.
* Discussed the pros and cons of the current contract storage rent model with the official developers of Parity, discussed the deficiencies of the upper ink! language function and the decoupling of the underlying rent model, and participated in planning the future development direction of the module.

### Europa
* Designed the basic information of the transaction module and the prototype of the contract call display, and improved the relevant requirements documents.

## Marketing and Opertation

### Wasm Contract Open Platform
* Patract will support the privacy DeFi protocol — Manta Network to integrate Wasm contract functions.
* Litentry develops ink! contracts based on Patract’s Redspot and Europa products to expand the identity service ecosystem.
* Polkadot unsecured lending system — Bandot announced to join Patract Wasm Contract Open Platform.
* OpenSquare will partner with Patract to develop a multi-asset gas mechanism. 

### Patract’s Council work
* Voted aye for Kusama Council motion #282, regarding Bitfwd’s application of treasury expenditures for parachain-related activities.
* Voted aye for Kusama Council motion #283, regarding Hypercube’s application of treasury expenditures for Kusama’s educational video production.
* Voted aye for Polkadot Council motion #73, regarding OpenSquare’s treasury expenditure application for the treasury support website doTreasury.

### Events
On April 1, Patract founder Lipeng Yue was invited to participate in the Polkadot Beijing panel for NFT special Meetup. During the event, Phala, Bifrost, Crust, Litentry, and SubDao discussed the challenges facing the development of NFT and the advantages of choosing Polkadot to develop NFT .

**About Patract**

Patract is providing solutions for the development of Parachains and DApps in the Wasm smart contract ecosystem of Polkadot. We help the community to design and develop on-chain contract modules and Runtime support, and provide DApp developers with full-stack tools and services support, covering development, testing, debugging, deployment, monitoring, data provider and front-end development stages.

Development

Redspot

The proposal for Redspot v0.4 has been completed and we are expected to submit it next week.

Researched the browser and the local folder communication to realize the program.

The account signature part is being designed and rewritten, and the browser extension signature...

Patract Weekly Report(The 1st Week，April)

Patract

**Development**

#Redspot

Help @shamb0 to complete the review of Redspot v0.3.

#Ask！

Framework:
Designed and implemented the StorableMap class, and implemented self-enumerable Map storage.
Exported the value of the entry Key in MetaData.json.
The format of the data stored on the chain is: key -> (value: next->key), so you can access the value stored under any key in O(1), or access to any value in O(n) iteratively.
Compiler:
Compiled all extension codes and migrated all to Ask! , Completely separated from ASC.
The inheritance and deployment of the reference file has been completed, and the problem of contract code must be in the same file is solved

#Europa

The 0.3 proposal has been written and waiting to be submitted after Redspot's vote is passed.
According to the proposal to design the development plan of version 0.3.
 
#Patract-Archive

Patract-Archive is a redesigned chain Archive project referred to Substrate-Archive. Its purpose is consistent with Substrate-Archive, and it is used to export chain state and block data. But Patract-Archive is more stable, extensible, supports multiple producer-consumer models, and is decoupled from the node environment. It is the basic component of Patract's many data-related businesses (such as PatraScan, Elara, etc.).
The preliminary design of Patract-Archive has been completed within last week and this week, and we have a basic realization of the 0.1 framework, deleted the public components. We are about to be used in the testnet environment as version 0.1 within the next week.

#Elara

Redesigned the Elara UI.

#Ceres

Support custom storage interface
Support Wasmtime
Support std / no_std conditional compilation
Support all Host Functions in Pallet-Contracts
Support custom Runtime-Interface

#Patracts Pallet

Completed the development and testing of contract storage deposit model.
We are about to open to the public next week for testing.


**Patract Product**

#PatraScan

Written storage definition documents for Pallets such as Staking, Session, Democracy, Council, etc.
Completed the drawing of prototype pages related to account details, democratic governance, and parliament in PatraScan, and writed corresponding API documents.
Added Treasury related to API.
redesigned the back-end architecture.
 
#Europa

Completed the drawing of prototype pages related to Explorer, Transaction, Blocks, etc.
Marketing and Opertation
#Patract’s Council work
Voted aye for Kusama's #4 Bounty proposal, regarding the development of notification Apps of Council-related affairs.
Vote aye for the upgrade of Kusama v2030.
Vote aye for Polkadot's #43 Treasury proposal on the development of Governance-related mobile App M2 developed by Litentry.

**Marketing and Opertation**

#Patract’s Council work

Voted aye for Kusama's #4 Bounty proposal, regarding the development of notification Apps of Council-related affairs.
Vote aye for the upgrade of Kusama v2030.
Vote aye for Polkadot's #43 Treasury proposal on the development of Governance-related mobile App M2 developed by Litentry.

#Events

On April 9, Patract CTO Aten shared in the first phase of TechShare about 「How To Get Started With ink! Smart Contract Quickly」. TechShare is one of the online activities of the Patract development community.We hope that through this series of sharing, we can analyze Patract's technical principles and implementation details from top to bottom, from the shallower to the deeper, and we will conduct online live sharing twice a month.

On April 11, Patract attended the offline event of the Shanghai 「Common· Innovation Conference」organized by Jinse Finance.  Patract and other Polkadot ecological projects jointly discussed the difficulty of Polkadot’s constructing structure, the difficulty of following the progress of each parachain, and the project's in-depth topics such as the choice of kusama and polkadot slots and threads.


Development

\#Redspot

Help @shamb0 to complete the review of Redspot v0.3.

\#Ask！

Framework:
Designed and implemented the StorableMap class, and implemented self-enumerable Map storage.
Exported the value of the entry Key in MetaData.json.
The format of the data stored on the chain is: key ->...

Patract Weekly Report (The 2nd Week,April)

## Development

### Substrate consortium blockchain
* We have participated in ParityAsia’s weekly discussion on the Substrate consortium blockchains. Link for details.
* We have finished the research of Substrate consortium blockchains in the “Financial Distributed Ledger Technology Security Specification” of the current situation, advantages and disadvantages of the contract part of the demand conditions and future improvement.

### Ask！
* We have refactored the project structure of Ask! and have changed to the form of transform to implement Ask!.
* We referred to scale-info and Solang to implement a sub-library of the Metadata specification.
* We consider making some storage-related grammar design improvements.

### Redspot
* We have carefully planned the development content in v0.4, and plan to write and submit the treasury proposal for v0.4 next week. In v0.4, the main development focus is to help Redspot implement more plug-ins to support richer functions, support Docker, and we plan to provide a Canvas-UI-like UI interface to facilitate contract developers to operate contracts.
* Docker functionality is being supported this week.

### Europa

* We have carefully planned the development content of Europa v0.3, and plan to write and submit the treasury proposal for v0.3 next week. In v0.3, the main development focus is that Europa will make a Ganache-like UI interface and provide compiled binary packages for packaging and distribution. After this version, Europa will become a user-friendly sandbox product, and we will continue to iterate on this basis.

### Ceres

We started the Ceres project (the original Europa-lite project). Ceres is an ink! Contract operating environment iterated from Europa. Europa is positioned to simulate the node environment, while Ceres is positioned to only simulate the contract execution environment, so Ceres will be similar to Ethereum.js, which can be integrated into other environments to provide a contract execution environment and allow ink! Contract to run anywhere (Including browser). Ceres will provide both CLI and Desktop App (both provide the same functionality).

During this week, Ceres has supported:
* The *.contract compiled by cargo-contract has been parsed.
* Based on patract/wasmi, implement the ink! contract executor in Ceres (support Wasm Debug).
* Successfully deployed Flipper’s Deploy function.

Ceres will release the Alpha version after submitting the treasury proposal. The Alpha version will support the following features:
* Support all Host Functions in pallet-contracts.
* Provide the on-chain environment required by the above Host Functions.
* Runtime supports the running of all functions of Flipper.
* The corresponding CLI and Desktop App.

### Website
* The new official website has been refactored, and the Nextjs version has been upgraded, the support for internationalization is more friendly, and several animations have been added. Vercel is used to host the new official website, and Cloudflare CDN is used to accelerate static resources.
* In the development of Roadmap, SVG is used to draw Roadmap.
* The official website integrated Blog and the Blog multi-language module.
* Docs built framework selection, used Vuepress to build Patract Docs.
* Build a static file service and host Brand Assets (https:static.patract.io).

### Himalia
The project dependencies of the go-patract project have been upgraded and adapted to Frame Contracts Pallet 3.0 to support the latest contract call interface of 3.0.

### Elara
Roughly completed the official website console function rewrite.


### PatraScan
* Add some missing fields from the Blockchain API.
* Plan the PatraScan product and the follow-up development plan.

## Patract’s Council work
* Voted aye in the Polkadot Council for motion #71, regarding the construction of the PolkaWorld website. Link for details.
* Voted aye in the Polkadot Council for motion #72, regarding Wei Tang’s new decentralized identity registrar. Link for details.

## Products

### PatraScan
* Completed the blocks, the data design of transaction and event-related functional modules for the PatraScan browser, and completed the page prototype design.
* Staking related data sheet model design.

### Patract Contract Model
* Researched and completed the contract storage model design, including storage deposit calculation details, collection and return steps, etc.
* Completed the Jupiter TPS testing script.
* Started to develop a verification version of the contract storage model.

### Europa
Researched Ethinfo and other products, and completed the preliminary module planning.

## Marketing And Operation

### Wasm Contract Open Platform
* Patract has partnered with Apron Network on Elara node service related products, and jointly built the Wasm contract open platform. Link for details.
* Coinversation and Patract have reached a unified consensus on Wasm contract ecosystem development and cooperation goals, and they will consider deploying Wasm contracts in the future. Link for details.

### Polkadot DAO Alliance

Polkadot DAO Alliance (PDA for short), initiated by SubDAO, was jointly established by dozens of Polkadot ecosystem projects. The founding members are: Patract, Plasm, Phala, Stafi, Crust, Litentry, Bifrost, Darwinia, Zenlink, DeepDAO, SubDAO. Link for details.

### Official website updated
Patract’s official website was upgraded and launched, the Logo was redesigned, product sections were enriched and optimized, and multiple content sections such as Blog were added.

### Polkadot Hackathon
In the Polkadot Hackathon held by ParityAsia, 3 projects developed with the Patract suite won the second and third prizes and the investor’s favorite team award respectively. Among them, SkyePass, a decentralized password and identity management party based on IPFS and Substrate WASM smart contracts, won a special sponsorship of 10,000 CNY by Patract.

### Upcoming Events
* On March 29th, Patract founder Lipeng Yue will attend Curst Open Day 2021 #4. Link for details.
* On April 1, Patract founder Lipeng Yue will attend the Polkadot Beijing NFT special Meetup roundtable session. Link for details.


**About Patract**

Patract is providing solutions for the development of Parachains and DApps in the Wasm smart contract ecosystem of Polkadot. We help the community to design and develop on-chain contract modules and Runtime support, and provide DApp developers with full-stack tools and services support, covering development, testing, debugging, deployment, monitoring, data provider and front-end development stages.


Development

Substrate consortium blockchain

We have participated in ParityAsia’s weekly discussion on the Substrate consortium blockchains. Link for details.

We have finished the research of Substrate consortium blockchains in the “Financial Distributed Ledger Technology Security...

Patract Weekly Report (The 4th Week，March)

Patract is providing solutions for the development of Parachains and DApps in the Wasm smart contract ecosystem of Polkadot. We help the community to design and develop on-chain contract modules and Runtime support, and provide DApp developers with full-stack tools and services support, covering...

# Work of Council
* Voted aye for Polkadot Treasury Proposal #50 , regarding the operating costs of the Polkadot Ecosystem Research Institute in April.
* Voted aye for Kusama Treasury Proposal #292 , regarding the Kusama Runtime upgrade to v9010.

# Development
## Redspot
**Redspot-explorer**

* Developed redspot-explorer’s compiling contract function.
* Developed the console function of redspot-explorer.
* Added message parsing function.**

# Ask！
**Preprocessor**
* Completed metadata.json to generate type support objects.
* Refactored part of the code.

**Framework**
* Passed the test of accessing basic data types in StorableArray’s Pack/Spread storage mode.
* StorableMap’s Pack/Spread storage has passed the test of other basic data types except ScaleString.

# Europa

* Started the development of Europa UI interface, completed the block browsing and account management functions.

# Patract-Archive

**v0.1**
* Updated the runtime of polkadot/kusama to v0.9.1
* Fixed the problem that the latest rocksdb storage cannot be synchronized when the block is synchronized to the latest.

**v0.2**
* Refactored v0.2 version, designed documentation, basic idea: block height -> executor: execute block, get storage -> archive.
* The single block synchronization process of the specified block height has been run through at startup, and the currently specified block height is compared with the best block number of the backend. If it is less than the best, the synchronization will continue.

# Elara

* Optimized the script monitoring memory.
* Repaired Elara’s memory leak.

# PatraScan

**Product**
* Finalized PatraScan v0.20 page design document.
* The Accounts page design document progress 50%.

**Back end**

* Combined patrascan-api and decoder, and unpacked the pg and kafka parts of decoder separately for reuse and maintenance.
* Decoder service adapted to the latest archive data interface.
* Unified use of entity/migration (orm) instead of raw sql to manage the data interface of the business database and api server.
* Completed basic blocks/transactions/events of the business code.

# Marketing and Opertation

## Open Platform

* NFTMart officially announced to join the Patract Open Platform, and they are about to integrate Wasm contract function with Patract’s tool suite. Click for view.

## Community activities

* The official website of the Patract Open Platform is officially launched, and more than 10 Polkadot projects had jointly established. Click for veiw.
* On May 14, Patract Labs, as a member of the 2th Web 3.0 bootcamp, participated in the offline opening ceremony initiated by Wanxiang Blockchain Lab, New Chain Space, Parity and the Web3 Foundation.
* On May 16, Patract Labs was invited to participate in offline roundtable event of the 2021 China Polkadot ecosystem hosted by BML.

# About Patract
Patract is providing solutions for the development of Parachains and DApps in the Wasm smart contract ecosystem of Polkadot. We help the community to design and develop on-chain contract modules and Runtime support, and provide DApp developers with full-stack tools and services support, covering development, testing, debugging, deployment, monitoring, data provider and front-end development stages.

https://patract.io/

Work of Council

Voted aye for Polkadot Treasury Proposal #50 , regarding the operating costs of the Polkadot Ecosystem Research Institute in April.

Voted aye for Kusama Treasury Proposal #292 , regarding the Kusama Runtime upgrade to v9010.

Development

Redspot

Redspot-explorer

Developed...

Patract Weekly Report#8 （10th-14th,May）

# Work of Council

* Voted aye for Kusama Treasury Proposal #89 , regarding the operation and maintenance costs of the Stylo wallet.
# Development
## Redspot

* Completed the Redspot-Watcher plugin.
* Completed Redspot’s function of signing with Polkadot Extension
* Completed the main functions of Redspot Web UI, which greatly reduces the developer threshold.
* Completed 85% of the work in the RedSport v0.4 plan.

## Ask!

**Preprocessor:**
* Refactor part of the code extension logic.
* Continue to develop and use Json to generate metadata.json.
**Framework:**
* Completed the auxiliary method and Pack mode access of StorableArray.
* Refactor Storage to realize reuse of Storage instances.

## Europa

* Fixed the problem of Wasm NameSection parsing failure last week, and released new versions for Substrate-3.0.0 dependency and Master dependency respectively.

## Patract-Archive

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

* Fixed the issue of inconsistent results of runtime api execute_block.
* Fixed the decoding compatibility problem of justifications (https://github.com/paritytech/substrate/pull/7640).
* Added child storage changes.
* Added missing Genesis Storage according to Chain Spec.
* Decoupled and componentized the original Actor model, add a forwarding layer to support the retransmission of multiple message components (such as kafka).

**v0.2 version (based on Substrate source code)**

* Completed writing Metadata (call through Runtime API).
* Completed writing the Version field (by constructing Executive).
* Fixed the problem that the Version data of the previous block is mismatched when the Version changes (an additional update is required).
* Removed something with no associated dependency. Currently, the Client module only modified the Service and does not rely on others.
* Memory-Profiler collects running data for about 10 minutes, the memory occupies 200M, no leakage.

## Elara

* Completed the multi-node status monitoring script, with a more elegant way of displaying information.
* Fixed a memory leak problem.

## PatraScan

* Drawn Account related prototype pages: Indice, Proxy related parts.
* AccoutID_Balance-themed class diagram design.
* Reorganized Patrascan-API and Decoder components.

# Marketing and Opertation

## Open Platform

* Standard Protocol partnered with Patract.
* Zenlink partnered with Patract and joined the Patract Open Platform.
* Clover announced to join Patract Open Platform, planning to support Wasm smart contracts

## Community activities

* On April 27th, Lipeng Yue, the founder of Patract was invited as guest at 8btc Academy’s 32nd open class to explain the topic of Gavin Wood’s inside journey from the comparison between Polkadot’s current situation and the whitepaper.
* On April 29th, The founder of Patract Lipeng Yue was participated in the live broadcast of PolkaWorlk’s Polka Parachain series. In this issue, he shared the topic How Polkadot’s Parachain Framework will incubate Smart Contract 2.0.
* On April 29th, The founder of Patract Lipeng,Yue was invited to participate in the Privacy on Polkadot event initiated by ZKValidator, and participated in the privacy projects in the Polkadot ecosystem. Here is the share from the founder of Patract.

## About Patract

Patract is providing solutions for the development of Parachains and DApps in the Wasm smart contract ecosystem of Polkadot. We help the community to design and develop on-chain contract modules and Runtime support, and provide DApp developers with full-stack tools and services support, covering development, testing, debugging, deployment, monitoring, data provider and front-end development stages.

https://patract.io/

Work of Council

Voted aye for Kusama Treasury Proposal #89 , regarding the operation and maintenance costs of the Stylo wallet.

Development

Redspot

Completed the Redspot-Watcher plugin.

Completed Redspot’s function of signing with Polkadot Extension

Completed the main functions of Redspot...

Patract Weekly Report#7（26th-30th,Apr）

bafyreifx5lhegdkqxbqiejfhosp5ew4rzlyqk6arr34lxkwnmtuvc2aazu

bafyreibrullxyeyufptui4elpoxlukmvhotcf2mrj4rjfcwn7bulu5wvke

bafyreifcsrbpdaqydd4yntzepqlpg7nge7d77fze7r7i3egeibdf73gyuy

bafyreiacmek3bcids77475et6ienr5hxmn7qfsirz3afgc5gexg7z3b3em

bafyreih6nx6osfk5pvjsfqyugj2ubyzz2k673vcwj6vk4y4s3wgvbrrf7q

bafyreigwu3ytqv4rxwwyk6iwazlotpcorxo7n3purgilu77s2tnitwda6m

bafyreieappefcybkcbt3s6lsimm6smipkbrfrgl54emqiu2xz66bworlt4

bafyreig3xmf7jocotpdwy4h326fyhk5rarwrorwm6hm5e3llsaumlxh5d4

Patract

6 Posts