5 must-reads in the evening | Trade-off research of various Rollup solutions

1. Diem is going to be a USD stablecoin? Or a CBDC stand-in?

At a conference held last week, Christian Catalini, chief economist at the Diem Association, explained that the Diem stablecoin project is an alternative that would occur if the central bank issued its own digital currency (i.e. central bank digital currency). ), the Diem stablecoin may be phased out. Christian Catalini puts it bluntly: "Our first white paper was very childish." Click to read

Golden Evening News | List of important news on the evening of March 20: 12:00-21:00 Keywords: MakerDAO, ETH transfer, USDT positive premium

1. $2 million in MakerDAO debt will be cleared as the auction enters its final stages.

2. 360 Security Guard: criminals use the guise of virtual currency to carry out fraudulent and illegal fund-raising activities.

3. Foreign media: The former CEO of Bakkt sold 1 million US dollars of stock after learning about the new crown virus.

4. The decentralized wallet imToken ETH transfer volume increased by 78%

5. The USDT positive premium has lasted for a week, and the arbitrage mechanism "failed".

6. Beijing optimizes the "inter-enterprise stock non-residential transaction" process and uses blockchain technology to store certificates on the chain.

7. NetCents, a digital currency payment company, integrates encrypted credit cards into the payment ecosystem.

8. Bitcoin has risen sharply within the day, and the current highest rise is 6912.43 US dollars. [2020/3/20]

2. Trade-off study of each Rollup solution

Golden Evening News | List of important developments on the evening of January 3: 12:00-21:00 Keywords: SEC, patent review, Singapore, President of Venezuela

1. Telegram refused to disclose financial data about the ICO to the SEC.

2. The State Intellectual Property Office revised the "Guidelines for Patent Examination", involving emerging fields such as blockchain.

3. Alibaba’s 2019 Anti-Counterfeiting Annual Report: Assist 439 districts and counties in anti-counterfeiting, and introduce blockchain to help protect property rights.

4. Monetary Authority of Singapore: 5 digital banking licenses will be issued.

5. Tencent Cloud signed a strategic agreement with Hunan Agricultural Bank to provide blockchain support for smart city construction.

6. President of Venezuela: Petro will be used for oil and some gold sales.

7. Wanda Information signed a contract with the National Logistics Platform. The two parties will jointly build a "blockchain + supply chain financial system".

8. Bitcoin rebounded and rose within the day, the highest rose to 7368.18 US dollars, and the lowest fell to 6871 US dollars. [2020/1/3]

There are many types of Rollups with different trade-offs in throughput, latency, security, versatility, and running cost. This paper formulates a Rollup analysis framework around these tradeoffs and analyzes why this framework works for different Rollup implementations. We hope that this framework can provide a basic reference for project parties to choose Rollup solutions on demand. click to read

Golden Evening News | List of important events on the evening of December 9: 12:00-21:00 Keywords: "Shanghai Executive Meeting, Tether, iShenzhen, Bitmain, Xinhua News Agency"

1. Tether officially announced that it will migrate 200 million USDT from Omni to the ERC20 protocol

2. OKEx releases the list of the seventh batch of deleted TOKEN trading pairs

3. China Energy News: With the development of blockchain, the energy field cannot blindly follow the trend

4. Central banks of 9 countries speak out for digital currency within one month, China and France are actively promoting

5. After the Ethereum Istanbul hard fork, 96.3% of the nodes have completed the upgrade

6. Vice Minister of the Ministry of Industry and Information Technology: Actively carry out research and development of network security technologies in blockchain and other fields

7. Ketuan Zhan proposed to dismiss all directors at Bitmain’s shareholder meeting, which was rejected by shareholders

8. Shanghai Executive Meeting: Focus on blockchain and other technologies, and promote financial technology research and development and application

9. Xinhua News Agency: Under the support of multiple technologies such as on-chain, new economic and new formats continue to emerge

10. The Shenzhen government service APP "i Shenzhen" officially launched the blockchain electronic license application platform [2019/12/9]

3. Top 5 Smart Contract Platforms on Polkadot for Building DApps (Developer Guide)

Ethereum has attracted a lot of talent due to its first-mover advantage and strong network effects. However, developers quickly realized the limitations of the Ethereum platform. Lack of scalability, higher fees, too much network congestion, and lack of proper tools. click to read

4. Why do cryptocurrencies, DEX, NFT, DAO, and AI all point to the possibility of a new human world?

Recent blockchain developments have produced some new technological primitives: cryptocurrencies, DEXs, NFTs, and DAOs.

They're interesting for many reasons -- ideological, intellectual, egalitarian, etc. But what intrigues me is that, together with continued advances in artificial intelligence research and semiconductor technology, they point to the possibility of a new human world, one in which money will no longer be a drain on attention, but rather a The invisible pillars of the world's infrastructure become "solved problems". click to read

5. Five questions about the issuance of digital legal currency by the central bank

At present, central banks or monetary authorities around the world have expressed varying degrees of concern and even strong interest in digital currencies. Although no central bank has actually issued a digital currency so far, several central banks, including the People's Bank of China, have expressed their willingness to accept or try to operate, or even issue digital currencies. In this regard, there are opinions that even if the central bank issues digital currency, it is not a real digital currency, and some even believe that digital currency is decentralized and is fundamentally incompatible with monetary authorities. This requires an in-depth study and judgment of the central bank's digital currency issuance and the problems it brings. Click to read

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