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Blockchain News, September 18 The intersection of blockchain and games will undoubtedly becomebittorrent crypto btt a hot topic in many industries in the future-there are actually many similar topics. But in this field, there is a new trend that is very interesting, that is, play and earn (P2E) games.

Subsequently, on September 17, Ryan Watkins once again tweeted that the total supply of stablecoins this week has can i buy bitcoin from coinbase in indiaexceeded 120 billion U.S. dollars. In the second quarter, the transaction volume of stablecoins on the blockchain exceeded US$1.7 trillion, a year-on-year increase of 14 times. At the same time, the supply of decentralized stablecoins has just exceeded 10 billion U.S. dollars and will continue to erode the share of centralized stablecoins.Watkins also believes that stablecoins have the characteristics of local digitization, global accessibility, and resistance to seizure. It can provide individuals and institutions around the world with easy access to U.S. dollars to meet offshore U.S. dollar demand. The offshore U.S. dollar market may exceed 57 trillion U.S. dollars, so stablecoins have broad prospects and are extremely disruptive. Therefore, they are closely watched by regulators.

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The above two figures show the demand for stablecoins. Based on this market background, as users of stablecoins, whether they are centralized stablecoins or decentralized stablecoins, they may be affected to a certain extent by the price changes of stablecoins.For example, when users buy stablecoins and use them in exchanges, they will always be troubled by price fluctuations. The stablecoins that have been held will also receive different cash due to the pricing at the time of exchange.In the international market of cryptocurrency, there are still some exchange stable currencies issued according to the regional legal currency. These tokens can be directly exchanged for legal currency, but the exchange requires a fee.And some fully open OTC trading markets mean that users have to pass the market pricing of stable currency acceptors to buy stablecoins.For example, USDT has been issued on many chains, and after its issuance, it needs to reserve US dollars in the bank. But it is not the issuer of USDT that controls the price for USDT. It is an acceptor. The price of an acceptor is determined by market demand. At present, the most trading pairs on all exchanges are USDT, which means that when the price of coins rises, users may increase their demand for USDT, and there will be a lot of purchases. . This will be obvious in the OTC market.

But there is another feature. If the price of Bitcoin increases, the price of USDT will decrease and then slowly return to the average value. If the price of Bitcoin falls, USDT rises instead.This means that in some characteristics, the price of bitcoin has risen, and there are more shippers, so more USDT is exchanged through the acceptor, and the acceptor will continue to reduce the U price.In the future, BitDAO intends to launch various DeFi products, including an encrypted futures exchange and a decentralized version of Bybit.

After layout, Bybit has formed a centralized derivatives exchange and a decentralized DeFi ecosystem, and there is still a lack of a centralized spot exchange.MEXC is Bybit's choice? The crypto community will wait and see.Arbitrum will continue to absorb the most advanced technology and actively promote the development of the expansion field.After the Ethereum expansion network Arbitrum One was officially launched and publicly tested, it has become the network with the largest amount of asset lock-ups in the Ethereum L2, even an order of magnitude higher than the second place. But in fact, this is only the first expansion network launched by Offchain Labs, and a parallel expansion technology with Arbitrum One will be launched in the future.

For example, in the previous cooperation with social media and online forum Reddit, Arbitrum has stood out among dozens of expansion plans, and Reddit will use Arbitrum to expand its community points system (Community Points). The Arbitrum team told Lianwen, "According to our current expectations, there will be various industry-specific and company-specific Rollup solutions in the future. Multiple Rollups can run in parallel to increase the total capacity."At that time, Reddit conducted research and in-depth review of multiple Ethereum scalability solutions, and found that Arbitrum's Optimistic Rollups were the most promising expansion technology for the community points system, so it decided to adopt the Arbitrum solution, which will be launched on the Rinkeby testnet first. , And then migrate to the Ethereum mainnet.

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As for the current expansion effect of Arbitrum One, the team said that there is still some room for improvement in the short term, but in the long run, it still needs to rely on the data sharding technology of Ethereum 2.0 in order to reduce transaction costs more significantly.In addition, we also chatted with the Arbitrum team about "the centralization risk of a single Sequencer", "views on other expansion technologies" and other topics.What are the components of Arbitrum's complete solution?In fact, we are very curious about what components Arbitrum is built of as a novel and complex expansion technology, and what role AVM and ArbOS, which are often heard in the community, play in this agreement.

The Arbitrum team stated that Arbitrum consists of four parts, namely: smart contract of the agreement, AVM (virtual machine), ArbOS and asset bridge.Smart contract of the protocol: Sometimes called EthBridge, it refers to the smart contract of the Arbitrum Rollup protocol on Ethereum. It ensures that the business above this layer can run correctly, and provides mediation if there is a dispute in the Arbitrum protocol. "Logic. (Chain note: The term Arbitrum comes from Arbitrium, which means arbitration, that is, "dispute resolution").Arbitrum Virtual Machine (AVM): AVM virtual machine is similar to EVM (Ethereum Virtual Machine), it will execute computer programs, read input and produce output.ArbOS: ArbOS is an operating system (OS) running on the second-tier network that provides a compatibility layer that fully supports EVM. It will also serve as the recorder, supervisor and enforcer of smart contract execution on the Arbitrum chain. (Official documents on the introduction of AVM and ArbOS: https://developer.offchainlabs.com/docs/avm_design)

Asset Bridge: Allow users to send Ethereum and other tokens between Arbitrum One and the Ethereum mainnet.Is there still room for Arbitrum One's transaction costs to drop?

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Although according to our previous estimates (https://www.chainnews.com/articles/115931150768.htm), Arbitrum's transaction cost can still be reduced by about an order of magnitude compared to the first layer of Ethereum, but according to the statistics of the L2 Fees website From a point of view, it is still several times higher than the cost of using some ZK Rollup networks.However, you can also see that the L2 Fees website has also made some notes for Arbitrum. Arbitrum One, which is in the Beta stage, is currently artificially restricted. The opening of this restriction on the official mainnet in the future may further reduce transaction costs.

We also asked the Arbitrum team about this topic. They said, "In the short term, we are working hard to reduce the basic cost of each transaction, that is, the cost allocated to each transaction in the batch release transaction. We will soon see Transaction costs have fallen.”However, in the long run, the Arbitrum One solution requires that each transaction be stored on the Ethereum mainnet through calldata. As long as the capacity of Ethereum remains unchanged, there is still an upper limit. Therefore, the long-term expansion possibility of Arbitrum One still needs to rely on the data sharding technology of Ethereum 2.0.The Arbitrum team stated, "ETH 2.0 data sharding will greatly reduce the cost of publishing data to Ethereum, which is crucial to Rollup's expansion technology. ETH 2.0 data sharding means cheaper calldata, and we are very happy to become Ethereum "Rollup as the center" part of the road map."Are there more expansion plans for Arbitrum?The upper limit of Arbitrum One is restricted by Ethereum. Is it possible for other types of expansion technologies to open the ceiling of Rollup?Teams have already begun to explore more efficient expansion solutions than Rollup. Although a little security may be sacrificed, the results obtained are quite significant. For example, StarkWare's StarkEx solution, through cooperation with dYdX, provides a perpetual contract transaction experience without paying for Gas in the second-tier network. Matter Labs will also introduce zkPorter technology in zkSync 2.0 to reduce data availability, but the cost can be reduced even more.

Matter Labs' zkPorter off-chain data solutionIn this regard, the Optimistic Rollup camp has not disclosed more different expansion technologies, and the advantages of removing data availability may be similar to Plasma technology. However, Arbitrum has already admitted that there will be more expansion plans, which will later coexist with Arbitrum One.

The Arbitrum team stated, “Arbitrum One is our flagship Optimistic Rollup solution, but in fact we have other solutions that will coexist with Arbitrum One. According to our earliest published academic paper, Arbitrum is the first to explore the expansion solution of the mixed data model. We will continue to explore how these ideas coexist with Arbitrum One, so stay tuned.”Can the sequencer review transactions?

In the L2 network, there is a role similar to a "miner" in the first-level network, which will be responsible for processing the order of transactions and is called a sequencer. For the early L2 networks, there is currently only one Sequencer, which is the node operated by the team itself.Therefore, the Ethereum community is also very concerned about whether this single Sequencer may have centralization or transaction review issues, for example, it can selectively confirm transactions. Regarding this issue, the team stated that although there is only one Sequencer responsible for transaction sequencing in the current version of Arbitrum One mainnet, Sequencer cannot review transactions, "because users can choose to bypass Sequencer and publish them directly on the blockchain. In this way, the transaction is forced to be written into the blockchain.”

In addition, in the official Arbitrum documentation (https://developer.offchainlabs.com/docs/inside_arbitrum), the team stated that it has not yet added a mechanism to punish Sequencer, because this node is officially maintained and will not perform malicious actions, but in the future Arbitrum One Will switch to a decentralized fair sorting service.In addition to the Sequencer, the network also needs more validators (Validators) to review each transaction in real time, making the security of the network more reliable. They said, "Although there is only one Sequencer, we hope to have more verifications. To ensure the correctness of the agreement, so we will announce in the short term the well-known institutions that will participate in this verification process.”If ZK Rollup is a longer-term solution, how will Arbitrum stay competitive in the long-term?Many people in the Ethereum community believe that ZK Rollup is a longer-term trend. Although it is extremely difficult, Hermez acquired by StarkWare, Matter Labs, Aztec, and Polygon are all focused on programmable zero-knowledge proof breakthroughs in this field. Including the Ethereum Foundation also formed a team to develop zkEVM technology.

In this regard, the Arbitrum team said, "Today Arbitrum is the most advanced, user- and developer-friendly expansion platform. Arbitrum will continue to absorb the most advanced technology and actively promote the development of the expansion field."Interviewee: Offchain Labs (Arbitrum) CEO Steven Goldfeder and founding team

About #raceway scanningThis research report belongs to Mint Ventures's #赛道scan series. Compared with the #深研报 series for comprehensive analysis of individual projects, the focus of the #race scan series is to pay attention to the development trend of the track and find the The representative projects are compared horizontally to grasp the dynamics and potential projects of each track in the encryption business.

About #raceway scanningThis issue of #赛道scan focuses on the lending track, especially the development and gaming trends of lending projects between the new public chain camp and the ethereum camp.

Lending projects are one of the oldest and most important sectors in the Defi field, among which a large number of white horse-level projects have emerged, such as Aave, Compound, and MakerDAO. Most of the early leading lending projects were born in Ethereum, but with the rapid development of various new public chains in the past six months, many lending projects deployed in new public chains and multi-chains have emerged in large numbers.In addition to the differentiation of the deployment of public chains, the business types of lending projects have also evolved from basic lending and stable currency lending to new businesses such as leveraged mining lending with targeted scenarios. In addition, credit lending mainly to institutional-level customers, risk grading agreements derived from existing lending agreements, and interest rate derivatives are also gradually growing.Although many lending projects already have relatively mature business models and abundant cash flow income, there is still huge room for innovation in this industry, and it is still possible to give birth to new giants such as Aave. It is precisely because of this that lending projects are still one of the key directions of the DeFi entrepreneurial team.After scanning the newly born projects in the past 2 months, we selected 4 more representative lending projects for key analysis. They either exploded rapidly in business or have unique mechanism innovations. Through this research Report, we try to answer the following questions:

What is the actual business situation of these projects?What are their product positioning, mechanism or token design innovations?

For those fast-growing projects, what are the sources of growth and how sustainable are they?Like the trading platform, the lending project is also the basic liquidity layer of the crypto world. It plays the role of a bank in the crypto world. Its essence is to coordinate the supply and demand of funds from multiple parties and match liquidity across periods. The business ceiling of this track will expand simultaneously with the expansion of the scale of the encryption business.

On the other hand, the demand for matching funds is long-term, and there is no doubt about the sustainability of this track. Although the current funding needs for encrypted lending mainly come from investment leverage, arbitrage, and short-term capital turnover, with the progress of compliance, the channel between the traditional world and encrypted finance will eventually be opened, and the real-world collateral ( The introduction of lending platforms such as real estate and corporate credits, and issuing loans to non-crypto players through stablecoins are all things that are gradually happening, which will bring more room for development to the industry.Whether as entrepreneurs, investors or ordinary users in this industry, the track of crypto lending is far from the final form. There are still a large number of new products and rich investment opportunities worth looking forward to.

Both Sides of the Table

Perspectives of a 2x entrepreneur turned VC at @UpfrontVC#

Mark Suster

Written by

2x entrepreneur. Sold both companies (last to salesforce.com). Turned VC looking to invest in passionate entrepreneurs 〞 I*m on Twitter at @msuster

Both Sides of the Table

Perspectives of a 2x entrepreneur turned VC at @UpfrontVC, the largest and most active early-stage fund in Southern California. Snapchat: msuster

Mark Suster

Written by

2x entrepreneur. Sold both companies (last to salesforce.com). Turned VC looking to invest in passionate entrepreneurs 〞 I*m on Twitter at @msuster

Both Sides of the Table

Perspectives of a 2x entrepreneur turned VC at @UpfrontVC, the largest and most active early-stage fund in Southern California. Snapchat: msuster