Updates on Loopring Protocol and its ecosystem every 2 weeks.

Loopring Bi-Weekly Update — 01/06/2019

Not too many updates this week, given we recently provided more comprehensive posts with the 2018 Retrospective, and 2019 Roadmap, and some details on Protocol 2.0 features.


During the last few weeks we’ve been focusing on the development of Protocol 3.0. If you recall from our 2019 Roadmap, 3.0 represents the next step beyond the Loopring 2.0 series, and uses different, more ‘experimental’ methodology in attempt to achieve efficiencies that are orders of magnitude greater than current solutions. We’ve got some code up and running which we are using to study the behavior of our new approach for settling order rings. We are still early in the development process of 3.0 and will continue disclosing details in the coming weeks and months.


Lightcone (Relay 2.0)

Also mentioned in the Roadmap is how Relay 2.0 — Lightcone — is our top priority at the moment. Over the past two weeks, we have been improving and testing the core Relay module. We have completed optimizations for restoring the order book, updating the latest orders, along with other critical components. We have completed the testing of submitting rings to testnet. The gas consumption has also been substantially reduced. Based on this core module, we have been working on an interface for Ethereum event logs.

Frontend & Product

iOS & Android

In iOS and Android development, we have implemented a cryptocurrency news section which provides users with accurate, convenient and timely access to information, directly in-app. The news section includes three categories:

  1. Newsletter: provides Chinese and English, with users able to upvote, downvote and share newsletters.

  2. News: pertinent and leading news, with ads and unrelated information removed for improved reading experience.

  3. Blog: users can read the latest blogs and updates from Loopring directly in-app.

This new feature will be included in version 1.6, which will be available for download in one week.

Furthermore, in the Android app, we have been implementing the market view using native Android SDK. We plan to launch the new market view in version 1.7, providing a much better user experience.

Operations & Marketing

  • 12/24/2018 — To celebrate Christmas and the New Year, Loopring held a LRC LuckyDraw event on Twitter, and randomly selected 20 supporters who followed and retweeted with a reward of 10,000 LRC each.

  • 12/24/2018 — Loopring worked with 5 projects and 4 media outfits to hold an award-winning quiz on Weibo.

  • 12/26/2018 — Atomic Wallet supports LRC, a useful multi-asset wallet.

  • 12/27/2018 — Loopring protocol 2.0 completed smart contract audits by smart contract security firm SECBIT, and has been deployed and launched.

  • 12/29/2018 — Loopring looks back over the past year of developments and challenges with the “Loopring 2018 Retrospective.”

  • 1/1/2019 — Loopring publishes “Loopring 2019 Development Roadmap,” outlining the core research and development plans in 2019, broadly reflected in two buckets of innovation and focus.

  • 1/2/2019 — Loopring COO Johnston is interviewed by Milin Finance, a Chinese media outlet, and shares Loopring 2018 Retrospective and 2019 Development Roadmap.

To stay up-to-date with Loopring, please sign up for Loopring’s Bi-Weekly Update, and find us here:

⭑ Twitter: twitter.com/loopringorg
⭑ Reddit: reddit.com/r/loopringorg
⭑ Telegram: t.me/loopring_en & t.me/loopringfans (Chinese)
⭑ Discord: discord.gg/KkYccYp
⭑ StackOverflow: stackoverflow.com/c/loopring
⭑ Kakao: open.kakao.com/o/gJbSZdF (Korean)

Loopring Bi-Weekly Update — 12/22/2018

Our security audit for Loopring Protocol 2.0 has successfully completed, and we have deployed 2.0! We will publish a separate post reviewing all of 2.0 functionality shortly. Our mobile apps saw meaningful updates, including a contact list for addresses. These past 2 weeks also saw a few updates on how Loopring is working with cross-chain projects for interoperability.


The security audit for protocol 2.0 is complete. The report can be found here: (http://loopring.org/resources/loopring_protocol_v2_audit_report_EN.pdf).

Shortly afterwards, we deployed protocol 2.0 to main net(https://github.com/Loopring/protocol2/blob/23bbb4e567d0ae32bf370c86a061d7adf145782a/deployment.md)!

In the coming days, we will provide an overview of exactly what 2.0 enables — from a technical POV, as well as a feature and user-facing POV.

The bug and optimization bounty program we launched in late October ended. We approved one optimization proposal that gave a minor reduction in gas consumption.

We finished work updating our code base to Truffle 5.0 with solidity 0.5 and web3 1.0. The final release version of Truffle fixed all stability issues we had with the beta releases.

We also continued our research for the next protocol release (more information will be released shortly in our updated 2019 roadmap).


Lightcone (Relay 2.0)

We have completed the first stage of our Lightcone Relay roadmap.

It includes submitting orders, canceling orders, matching orders, order book, trade history and other critical components. We have spent time on testing the relay to improve quality and performance. In addition, we have implemented JSON RPC. We have also modularized Ethereum interface to make it easy to use in the client.

Our new relay architecture is shaping up to be a formidable piece of our puzzle, and we are optimistic it will be a differentiator among DEXs, more closely emulating CEX performance.

Frontend & Product

iOS & Android

We have implemented the same features in the iOS and Android apps over the past two weeks, so we’ll combine the developments into one section this time.

After working with SECBIT for a long time, we have completed the security audit of the iOS and Android apps. The audit covered three areas, (1) common risks in application, (2) digital wallet assets security, (3) server-side application security.

The assessment has shown that our apps have no critical security risks. Even if an Android phone grants root access, our Android app can still provide good security protection. Audit reports are posted here:

https://loopring.org/resources/Loopr_iOS_Security_Audit_Report_EN.pdf(iOS English)

https://loopring.org/resources/Loopr_Android_Security_Audit_Report_EN.pdf(Android English)

We have implemented a contacts feature where users can store Ethereum addresses corresponding to their friends and peers. Users can add a name and note to each address. It makes it much easier for users to manage addresses. Users can also search addresses by name and note in the contact list view.

Another important feature is that users can now claim LRN airdrop in the homepage every day.

We have also improved many UI components. One of them is the new ‘version release’ notification being displayed when a new version of the app is released. You don’t have to get notifications from social media anymore.

You can check out and download UP Wallet mobile apps on Android and iOS

Operations & Marketing

  • 12/10/2018 — Loopring made a video to show Loopring’s latest news to the community.

  • 12/13/2018 — Coinist presents that Loopring is the biggest decentralized exchange idea of 2018 and Loopring has the potential to rock the crypto world. Click to read

  • 12/13/2018 — Three Loopring hoodies giveaway to celebrate 2018 holidays on Twitter. Click

  • 12/17/2018 — A few community members’ contributions: writeup and video.

  • 12/18/2018 —Loopring is the second project to have their ERC20 token, LRC, be integrated onto Wanchain. Wanchain 3.0 is currently capable of supporting cross-chain functionality for Ethereum and Bitcoin. CCN.

  • 12/19/2018 — LRC listed on CITEX exchange. Participants use the Loopring exclusive registration link to sign up and deposit LRC, and they will receive 1000 CTT (current value 380 RMB) for free.

  • 12/19/2018 — Loopring is a supporting platform and exchange for USDC, bringing another regulated fiat-backed stablecoin to DEX trading.

  • 12/20/2018 — LRN listed on Tokenomy, a Singapore Crypto-Exchange, supporting LRN/BTC trading pair .

  • 12/21/2018 — Loopring is glad to be part of the WBTC (wrapped Bitcoin) initiative as a DAO member, among a strong group of launch partners to help bring Bitcoin to Ethereum.

  • 12/21/2018 — Loopring publishes “The 2019 Truth on Security Tokens”.

To stay up-to-date with Loopring, please sign up for Loopring’s Bi-Weekly Update, and find us here:

⭑ Twitter: twitter.com/loopringorg
⭑ Reddit: reddit.com/r/loopringorg
⭑ Telegram: t.me/loopring_en & t.me/loopringfans (Chinese)
⭑ Discord: discord.gg/KkYccYp
⭑ StackOverflow: stackoverflow.com/c/loopring
⭑ Kakao: open.kakao.com/o/gJbSZdF (Korean)

Loopring Bi-Weekly Update — 11/24/2018

With protocol 2 complete and undergoing audits, our attention has also turned towards protocol 2.1, with security token support taking shape. Frontend web and mobile products have been refined and released — lots of new features. Lightcone Relay backend testing is in full swing.


We have continued making small improvements to protocol 2 to make it ready for release. EIP712 signature support was tested in MetaMask to ensure compatibility with third-party libraries.

Excitingly, we have also finished adding ERC1400 security token supportplanned for release in protocol 2.1 once the ERC1400 standard is finalized. The protocol team is already looking ahead and is researching the possibilities for the next big protocol release.


Lightcone (Relay 2.0)

Lightcone Relay has been moved into the software testing phase. We have completed software architecture refactoring in a new development cycle. Based on this software architecture, we have implemented actor models and related tests that are parts of core features. In addition, we have started implementing the interface to protocol 2.0 in Lightcore Relay. We also have implemented a new version of market cap API as the CoinMarketCap API will expire in December. The latest API will support Relay 1.0 and 2.0 to provide latest information for global cryptocurrency market.

Frontend & Product

iOS Wallet

iOS development has recently been focusing on compatibility, especially on P2P order compatibility. Users can scan QR codes to complete P2P orders between Circulr DEX, Android and iOS. We have also resolved compatibility issues between iOS app and the latest iOS 12. We have fixed a compatibility issue where importing imToken wallet’s mnemonics generate different addresses. We have improved WeChat login, account binding and WeChat logout. We have implemented upgrading the latest iOS app inside the app. Users don’t need to navigate to the website to download the latest iOS app anymore. We also have updated the UI for transaction fee of sending ETH.

Android Wallet

In the past two weeks, we have implemented login authorization in Circulr DEX where users can just scan QR codes on Circulr DEX to authorize address login, which is very convenient to use in Android app and website. We have also implemented scanning QR codes to enable tokens, submit orders, and cancel orders. These features will allow a better user experience between Android app and Circulr DEX and will be available in the next release.

We have implemented ETH and WETH conversion in the trading view using native development. We have fixed a compatibility issue where importing imToken wallet’s mnemonics generates different addresses.

We have implemented notifications for upgrading Android app. When a new version is released, Android app will pop up a notification where users can choose to upgrade with a single click.

We have been improving the security based on the audit report from SECBIT. We have implemented prohibiting users from taking screenshots of mnemonics, keystores, or private keys. We have implemented strong password checker.

For UI, we have implemented app launch animation, optimized the UI layout of notifications and updated the instructions in English and other languages. In addition, we have implemented traditional Chinese support, set the default language to English, updated the UI when creating a wallet and updated the UI for transaction fee of sending ETH.

imToken & H5DEX

We are going to release a new version of imToken DEX which supports many new features.

First of all, imToken DEX will now support P2P trade. When it’s released, imToken iOS app and Android app can participate in the airdrop, submit a P2P order and complete an order.

Secondly, imToken DEX supports scanning to trade. It will be available on both imToken iOS app and Android app. imToken users can use the scan feature for all kinds of trading, including login, submit orders, cancel orders, convert ETH and WETH, enable tokens and complete a P2P oder.

Finally, and one of the most important features is that above features are available in imToken homepage. Users don’t need to enter the dapp. To use all trading features, users just need to click the scan icon in the imToken homepage. Of course, imToken also provides many features besides these critical features.

It makes it much easier for users to enjoy Loopring decentralized trading. The current user experience will be closer to Alipay and WeChat. imToken DEX is currently in private beta testing, and we will release it to beta users next week. You can learn more from the following videos:

1.Scan to login: click

2.Scan to submit order: click

Circulr DEX

Circulr DEX is a decentralized exchange developed by UP Blockchain and Looping. Here is a post with video tutorials on how to use Circulr.

Circulr DEX has completed many features. We have added market price information in P2P submitting form for users to reference. We have implemented token balance, order amount, enabling token and other information to make it easier to submit an order. We also have implemented the order detail page where users can review all order based on the transaction id. Beside these new features, we have fixed many bugs, such as Ledger login, order valid time setting and others.

Android DEX

Android DEX is a web DEX inside Loopring Android Wallet. It supports market and P2P trading. For this airdrop, we have continued Android DEX development.

First, we have added market price information in P2P submitting, token balance, order amount, enabling token and other informations. We have also improved the user experience of P2P trading, including displaying fill rate and order amount. We have improved the verification when completing a P2P order. We also have unified error messages and error codes across wallets.


We have released Loopring.js 2.0.12. The new version has implemented P2P APIs and bugs fix.


Our designers have been working on product design and UI with the engineering team. Two main areas are:

  1. iOS and Android design: wallet message centers, address book management, news and KYC.

  2. Circulr DEX V2 design.

Operations & Marketing

  • 11/10/2018 — Matthew spoke with Greg from Dapp University on all things DEX and how to build with Loopring.

  • 11/11/2018 — Loopring team attended Tokenomic Summit Forum. COO Johnston shared Loopring protocol 2.0.

  • 11/12/2018 — Loopring Protocol launched a podcast channel on ximalaya. One of largest Chinese podcast station.

  • 11/12/2018 — Loopring team has attended Chainfor Blockchain News Meetup

  • 11/14/2018 — Loopring launched a new media channel on Ruguo APP

  • 11/15/2018 —PwC and Loopnest to launch joint blockchain accelerator program. Powered by Loopring.

  • 11/16/2018 — Loopring Weibo has reached a one million views.

  • 11/16/2018 — Singapore based exchange Bitget listed LRC/BTC LRC/USDT LRC/ETH pair.

  • 11/16/2018 —CoinMex crypto-exchange has listed LRN/USDT, LRC/BTC, LRC/BTC trading pair.

  • 11/20/2018 — “Loopring Protocol Asia Ambassador Program” started, click to apply.

  • 11/21/2018 — Loopring has been added onto Coindaily. One of the largest crypto media in Asia.

  • 11/21/2018 — Loopring attended 2018 Taiwan Blockchain Summit. Loopring Protocol Speech was delivered.

  • 11/21/2018 — BitUniverse supported LRC on their crypto terminal system.

LRN Airdrop #3 Note: We have been filling lots of community members’ P2P orders for the upcoming airdrop — please reach out and send your QR order on telegram or reddit before Nov 28th (Beijing time) if you need it filled!

To stay up-to-date with Loopring, please sign up for Loopring’s Bi-Weekly Update, and find us here:

⭑ Twitter: twitter.com/loopringorg
⭑ Reddit: reddit.com/r/loopringorg
⭑ Telegram: t.me/loopring_en & t.me/loopringfans (Chinese)
⭑ Discord: discord.gg/KkYccYp
⭑ StackOverflow: stackoverflow.com/c/loopring
⭑ Kakao: open.kakao.com/o/gJbSZdF (Korean)

Loopring Bi-Weekly Update — 11/10/2018


We have successfully completed smart contact development for protocol2 and protocol2-js and we are continuing to test and improve the code. 
Meanwhile, our second bug and optimization bounty program is underway.
Our dev team has also started to develop loopring smart contracts 2.1. This will begin to incorporate a focus on security tokens and the ERC1400 standard. We have also teamed up with the Dora.network team to start developing a sidechain solution to allow for high performance, DEX specific transactions with ultimate settlement to Ethereum.


Relay 1.0

We have been maintaining Relay 1.0 to make sure that all functionalities work in the new version of wallets, especially P2P orders. We also have removed some inactive tokens from the Relay’s hosted orderbooks.

Lightcone (Relay 2.0)

In the past two weeks, we have completed the core feature of the new order matching mechanism and refactored the order size management. This will improve the orderbook and make order matching more efficient. The new version of Socketio and JSON RPC APIs have been moved to the verification stage, including fetching transaction data and trading history data from CoinMarketCap and MyToken. We have also implemented unit tests for these APIs. In the next step, we will integrate all components in Lightcone Relay and start integration tests.

Frontend & Product

iOS Wallet

We have updated P2P trading in iOS app for the third LRN airdrop (please note we have slightly pushed back/expanded the airdrop date to ensure everything works perfectly and anyone who’d like to, can participate). As the P2P trading API has been updated, QR codes generated in 0.9.15 and earlier version won’t be compatible to Android app or 0.9.16 version. Please update your UP Wallet apps. Another important new feature is WeChat third party authorization. We have redesigned wallet list views, wallet address view and P2P QR code view. We have reduced the size of app by 50% successfully. We have fixed a crash when pressing “0” button in P2P trade view. We have implemented automatically detecting ETH address in the pasteboard: If there is a valid ETH address copied, the app will ask users whether they want to send tokens to that address (pretty neat! :).

Android Wallet

The main new feature in Android app is WeChat third party authorization. It remembers users’ settings configuration. It will make it easier for users to use across platforms. Another main feature is that users will be awarded 20% of all future trading fees from users they refer. We have implemented sharing P2P trade in Android app so that users can share a QR code of P2P trade to friends. We have fixed some crashes in the last release version. We have fixed a UI bug where pending transactions of ERC20 tokens may disappear. We have fixed currency and language settings that were not restored when the app relaunches. We have fixed that the password can’t contain special characters. We have implemented notifications for importing the same address.


After H5DEX completed support for the Android app, we have been improving the P2P trade feature. We have improved displaying the price of P2P trade by adding sell price and buy price. It should make it easier for users to calculate prices and costs. Besides, we have implemented sharing P2P trade in Android app. We have improved ETH conversion and fixed all related issues. At the same time, we have also improved P2P trade notifications.

UP DEX / Circulr DEX

UP DEX is a decentralized exchange developed by UP Blockchain and Loopring. To support the third airdrop, we have released the alpha version of Circulr V2 — UP DEX for PC web. Circulr V2 has a lot of new features:

  1. Supports Kline and volume chart.

  2. Supports P2P trading where users create a P2P order that can be scanned by Android and iOS apps.

  3. Supports market trade and P2P trade in browser wallets, hardware wallets and other wallets.

  4. Supports trade in UP Wallet iOS app.

  5. Supports grey, white, purple and blue color themes with one click switch.

  6. Supports four columns, three columns with large views, and three columns with small views.

  7. Supports a message center and push notifications.

  8. Improves the whole UI style and user experiences in a short period.

You can try Circulr DEX at https://circulr.loopring.io

We also released UP DEX macOS app. The macOS app has the same functionalities as Circulr Web but is more stable and has better performance. More importantly, it can run on any computer without worrying about different versions of browsers, which provides constant user experiences.

Loopring.js SDK

We have released Loopring.js 2.0.9. The new version has implemented notifyScanLogin and notifyCircular APIs. This will provide a better user experience when users use wallets to scan order in the web.

Operations & Marketing

Loopring @ HK Fintech Week

  • 11/02/2018 — Loopring team attended Devcon4 in Prague. The conference was unbelievably exciting, and a super strong signal for the entire Ethereum community. 3200 attendees vs ~900 last year. Interestingly, the thousands of #buidlers are greater in number than dapp users. It is still early :).

Devcon4 in Prague

  • 11/03/2018 — Loopring BD director Matthew attended Building The Free Web in Prague.

  • 11/05/2018 — Loopring joined blockchain community Bishijie.

  • 11/06/2018 — Loopring joined blockchain info platform Huobi info.

  • 11/07/2018 — Loopring team collected feedback from wallet users and delivered Q&A to the community.

  • 11/08/2018 — LRC was listed on Korean exchange Minebit.

  • 11/08/2018 — LRC collaborated with Tuluo blockchain community.

  • 11/08/2018 — Loopring onboarded on the Blockfolio Signal.

  • 11/10/2018 — CMO Jay will represent Loopring to join Asia/Mid East roadshows organized by EthAum Venture Partners in Singapore Nov.10, Bangkok Nov.12, Mumbai Nov.14 and Dubai Nov.16.

To stay up-to-date with Loopring, please sign up for Loopring’s Bi-Weekly Update, and find us here:

⭑ Twitter: twitter.com/loopringorg
⭑ Reddit: reddit.com/r/loopringorg
⭑ Telegram: t.me/loopring_en & t.me/loopringfans (Chinese)
⭑ Discord: discord.gg/KkYccYp
⭑ StackOverflow: stackoverflow.com/c/loopring
⭑ Kakao: open.kakao.com/o/gJbSZdF (Korean)

Loopring Bi-Weekly Update — 10/27/2018

We’ve made some great progress in the past two weeks. The Android UP Wallet 1.0 Beta is now available to download at Google Play. We released information for the third LRN airdrop.


We continued testing and optimizing protocol 2.0 while working with SecBit to audit the source code. We also made a small change to the fee model. It used to be possible to pay the matching fee in the token that got bought when the owner did not have a sufficient balance in the fee token, but now the matching fee always needs to be paid in the given fee token. The order fill amount is downscaled if needed.

We also finished designing the Loopring protocol smart contract 2.0 bug bounty program. Millions of LRC will be rewarded to bounty hunters and optimizers— exact details will be released in the next few days.

Meanwhile, we have also started designing and development of Loopring Protocol 3.0. We are thinking of creating a sidechain on Ethereum to do settlement and clearing for small transaction amounts. This solution can solve low Ethereum TPS and network clogging problems. Loopring has collaborated with the Dora.Network team to develop this solution. Testnet is expected to be delivered at the end of the year.


Relay 1.0

We have updated all features in order to support the Android app and we will continue testing it until the third LRN airdrop begins. (more on this below)

Lightcone Relay

We have redesigned the Lightcone relay (relay 2.0) core orderbook and matching algorithm in order to build better a matching mechanism for Loopring Protocol 2.0. We have finished lightcone-core and lightcone-actors and are now running the testing, completed Socketio and Jsonrpc core codebase, and will adjust them according to future use.

We have introduced trading data from top exchanges and crypto market websites, like MyToken.io and CoinMarketCap, to provide more precise price and volume to our traders.

Frontend & Product

Ring Tracker

Loopring frontend’s team have finished a new UI/UX for RingTracker which we will release in the near future.

iOS App

Fixed some bugs and improved user experience. Latest Up Wallet will have notification feature and user will be able to adjust the matching fee on the order page.

We also adjusted font and size after receiving some feedback from the community. This newest version of Up Wallet is much more user friendly.

Android App

Two months after UP Wallet-iOS release, we’re thrilled to announce the UP Wallet-Android 1.0 Beta release. Download the Android app at Google Play Store.

Android Wallet

Loopring.js SDK

We released loopring.js V2.0.6. and completed Loopring.js API integration to Loopring Protocol 2.0.


H5DEX has completed support for the Android app. It will be integrated into UP Wallet Android 1.0. You can experience DEX and P2P trades.

In order to support the upcoming third LRN airdrop, we improved the P2P feature to make it easier for the user.

UP DEX (Web)

UP DEX is a web-based decentralized token exchange jointly developed by UP Blockchain and Loopring teams. The Beta will be released shortly, and is now running the internal testing.

UP DEX will allow users to customize themes and UI.

Circulr & Loopr & imToken LoopringDEX

Circulr / Loopr / imToken LoopringDEX has listed four new tokens: IBT, SMDX, WEB & CDCC.

Operations & Marketing

  • 10/15/2018 — Loopring Fan Community was created by Loopring Chinese contributors. The goal of the organisation is to help build up the Loopring ecosystem.

  • 10/15/2018 — Loopring community delegate created a BBS website to share Loopring and blockchain information to the community.

  • 10/16/2018 — Loopring COO Johnston was invited by DragonEX Token Exchange to share DEX development and Loopring 2.0.

  • 10/17/2018 — Loopring Protocol joined #DeFi as member protocol to help support the open and decentralized financial movement. (We will be attending the DeFi Summit in Prague before Devcon4)

  • 10/18/2018 — Loopring CMO Jay Zhou joined a panel to discuss “STO Prosperous and Mission” with professionals from law firms and traditional financial institutions.

  • 10/18/2018 — Loopring joined BQI community.

  • 10/23/2018 — Loopring opened an official account on Zhihu to increase its social impact.

  • 10/23/2018 — Loopring Protocol collaborated with Coinbucks.top in order to help blockchain ecosystem building.

  • 10/25/2018 — Third LRN Airdrop Announcement. Dates to keep in mind: Nov 10–13 for the P2P trade requirement, & Nov 14–15 for the actual snapshot.

  • 10/25/2018 — Loopring Weibo account has reached 500,000 views.

  • 10/25/2018 — Loopring CEO Daniel Wang was invited to an AMA on TokenGazer.

  • 10/26/2018 — Android UP Wallet 1.0 Beta released and is open to community for feedback. If interested in being a beta tester, please contact Leila@loopring.org with your name and telegram ID.

  • 10/27/2018 — Dolomite’s DEX closed beta begins!

Note: Loopring team will be attending Hong Kong Fintech Week and Devcon4 next week. We are happy to meet anyone who is around!

To stay up-to-date with Loopring, please sign up for Loopring’s Bi-Weekly Update, and find us at:

⭑ Twitter: twitter.com/loopringorg
⭑ Reddit: reddit.com/r/loopringorg
⭑ Telegram: t.me/loopring_en & t.me/loopringfans (Chinese)
⭑ Discord: discord.gg/KkYccYp
⭑ StackOverflow: stackoverflow.com/c/loopring
⭑ Kakao: open.kakao.com/o/gJbSZdF (Korean)

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