Loopring Monthly Update — 2020/03

A busy month for the Loopring protocol, prover, and product!

During March — the first month following the launch of Loopring Exchange — we have made many optimizations on the frontend and backend of the DEX. At the same time, we have also made incredible progress in protocol upgrades, prover, and the Loopring smart wallet. Read on for more details.

R&D

Loopring Protocol

As previously announced, we will be doing another incremental protocol release which will be called protocol 3.5. Protocol 3.5 will contain some small but important changes, most notably:

  • An increase in the maximum number of accounts per DEX from 1 million to over 16 million (2^24) — previously we planned to scale it to 64 million but we now believe 16 million is a more reasonable goal for the next two or three years to come.

  • A merge of the commit and verify stages we currently have for blocks. Currently, it’s possible to first commit a block and only later prove that the block was valid. This was done because generating proofs could take a while (20–40 minutes). By allowing the proof for a block to be submitted later we could allow the onchain exchange state to be updated sooner, which has some advantages like quicker economic finality. But with our prover optimizations, even generating proofs for large blocks is now pretty fast. By removing the separate stages we can significantly simplify some parts of the protocol while also making some things more efficient.

  • Support for Conditional Transfers and agents to improve our onchain composability capabilities. These two features will allow us to extend the onchain functionality of Loopring exchanges and help bridge the gap between layer 1 and layer 2.

The most important changes have already been implemented. We are still working on some of the minor tweaks and doing all the necessary testing.

Loopring Explorer

No update on the Loopring Explorer as it remains a low priority. Instead, we have updated our Dune Analytics dashboard to show some extra interesting metrics:

https://duneanalytics.com/loopring

We are also discussing with Etherscan and other tracker sites to explore the possibility of displaying per-trade data on their websites.

Loopring Exchange

Loopring Exchange has been improving the UX and UI throughout its first month of existence. Some recent updates include: support of light and dark mode; choice of US dollars or RMB for displaying asset values; the Order and the Balance pages support filtering by trading pairs and currencies respectively; the Balance page adds asset values from on zkRollup and on Ethereum; option to hide assets with zero balance; a Total column for trade values. We continue to identify and fix many issues and make various improvements across the DEX.

Light and Dark mode on https://Loopring.io

We are in the process of fully supporting the WalletConnect protocol. When this feature is available, users can log in and use the Loopring Exchange by scanning a QR code with their mobile wallet, meaning it is no longer limited to Metamask. We expect the WalletConnect support to be available in about a week.

The focus of subsequent product optimization will focus on the price and depth chart, then the overall frontend performance. Stay tuned for a much more user-friendly exchange interface.

We also launched two more trading pairs this month, including LINK/ETH and LRC/USDT. Going forward operations-wise, we will focus on orderbook depth and liquidity.

Loopring Relayer

We have continuously optimized the relayer’s batch processing. At present, the percentage of larger blocks is gradually increasing, which is a direct manifestation of relayer optimization.

Distribution of blocks of different sizes (Source: DuneAnalytics)

We also perfected the system in various aspects, such as correctness and emergency response capabilities. One of our focuses was on the improvement of daily account reconciliation capabilities. At present, reconciliation can be performed based on daily snapshots. In future, we will continue to improve this capability to further ensure our internal account system is entirely consistent with the Merkle tree.

In terms of performance, we have added support for historical databases; the asynchronous processing capacity of matching results has also increased by 30%. We have also combed Kubernetes’ scheduling capabilities and related configurations to minimize the number of evictions. We have also optimized traffic throttling by adding an IP-based quota.

We finished the development of a new prover service. The new prover service is capable of smartly deciding whether to generate proofs locally or in the cloud; it also supports the “server” mode. The new prover service uses an upgraded version of the circuit library, which will significantly augment proving performance and reduce hardware costs. What users will soon perceive is that the deposit and withdrawal time is shortened to less than 30 minutes. We will launch the new prover service in production in just a few days.

An offline data processing platform based on Apache Beam is progressing smoothly, and it has been used to calculate our trade-competition winners. We plan to improve it to become a quasi-real-time data analysis system gradually.

We are also perfecting the relayer’s API documentation. We plan to release Chinese and English API technical documents in mid-April and introduce reward programs for market-making and referrals.

Loopring Smart Wallet

The major work in the wallet this month has been the joint debugging of frontend and backend interfaces, including unit testing and debugging of smart contracts. At present, the essential wallet functions, the guardian and contact functions, and the registration on Loopring Exchange have been code-complete. The deposit and withdrawal functions are still undergoing debugging. Next, we will add support for WalletConnect, notifications, the official guardian, and other features. We will also start UI work at the same time.

Operations

In a flash, Loopring Exchange has been live for a month. During this period, we received much appreciated recognition, support, and encouragement from the Ethereum Foundation, Ethereum and ZKP communities, and many other projects.

But most importantly, we have seen results and usage by traders! So far, Loopring has settled about 600,000 trades, which means ~20,000 trades per day. We believe Loopring Exchange will rank #1 in terms of trade settlements per day across the Ethereum DEX ecosystem. Loopring Exchange has also accumulated nearly 1,500 registered addresses! Further, the total value of deposited assets on Loopring Exchange has now reached 3.18 million US dollars. It seems to be an excellent start.

Trends of deposited assets (Source: DuneAnalytics)

The Ethereum Foundation and its founder Vitalik provided some kind words about Loopring’s technological progress in a recent BLOCKTV interview, and on the ZK podcast. He notes that zkRollup and Loopring are very promising and are likely to make a significant impact on the scalability and adoption of Ethereum.

Vitalik Buterin Talks ETH 2 and the Future of Money

Vitalik also acknowledged Loopring when he enumerated some breakthroughs in the Ethereum ecosystem between 2017 and today:

Marketing & Programs

In terms of events and activities, all offline activities worldwide were forced to be canceled due to the impact of the COVID-19 virus. That meant our planned appearance at Ethereum EDCON in Austria and other events were canceled. We joined some online and virtual events instead.

1) AMA on Bihu

On March 6th, Hoss Ma, our Chief Scientist, hosted an AMA on Bihu, sharing his experience in relayer development. Hoss claimed that Loopring’s overall DEX solution makes exchanges incapable of doing evil. Loopring Exchange is safe, easy to use, and low in cost. It can and will become a better alternative to centralized exchanges for ERC20 tokens.

More details can be found here (Chinese only):
https://bihu.com/article/1606905638

2) 1500 Honor VIP Accounts

From February 27th to March 15th, we awarded the title of “Honor VIP” to the first 1500 registered addresses on the exchange. They will enjoy the most significant one-year fee discount (the fee discount became effective on March 16th). And if you have completed at least ten trades before March 15th, you automatically became “Lifetime Honor VIP”, enjoying the lowest trading fee tier for life.

Recently, we lowered Loopring Exchange’s trading fee by 80%. Maker orders always have zero fees; for taker orders, the trading fee is between 0.06 and 0.10%, the lowest across all centralized and decentralized exchanges.

3) Trading Competition

From March 16th to March 31st, to further test the usability and performance of Loopring Exchange, we held a two-week trading competition and issued high LRC rewards. As of the 28th of this month, the total number of trades has exceeded 400,000, of which the maximum number of trades in a single day reached more than 80,000, and the maximum trade amount per account per day reached 300,000 USD. You can check our Twitter where we listed the winners daily.

4) Bug Submission Rewards

Between March 1st and April 30th, people can submit bug reports and improvement suggestions using the “Report a Bug” link on Loopring.io. For every selected feedback that we recognize as valid, we reward 500 LRC.

So far, we have received more than 120 issues from the community, and distributed 500 LRC rewards for 17 issues:

Bug submission reward winners

March was a tough month for much of the world, and the same held true for the cryptocurrency world, including Ethereum. Dramatic downturns in price led to a very congested network, and many DeFi protocols being tested to the limits. We wrote an article looking how Loopring held up during ‘Crypto Black Thursday’, and how our zkRollup DEX protocol is specifically suited for times of stress, when speed and execution guarantees in trading are paramount. Namely, when traders are paying 200 gwei to get transactions through, our industry-wide cheapest cost of settlement and instant execution can be a real life-saver.

LRC Staking

The earliest of the LRC stakers have been able to claim their protocol fee rewards for about three weeks now, as described in this article. Recall, there is a 90-day minimum stake period. Only 2 addresses have claimed and withdrawn their stake & reward, while ~400 addresses remain staked. Indeed, for those planning on remaining staked in the near term, we encourage them to wait for the 2 million LRC deposit that the Foundation will make in early May. For details on that, please also refer to the article linked just above.

In the LRC staking contract, 125 million LRC are staked, valued around $3.4 million currently. https://etherscan.io/address/stakingpool.lrctoken.eth

For LRC staking and claiming instructions, you can see here.


Loopring is a protocol for building high-performance, non-custodial, orderbook exchanges on Ethereum using zkRollup. You can sign up for our Monthly Update, learn more at Loopring.org, or check out a live exchange at Loopring.io.

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