ETH Weekly | The price fell below the 60-day moving average, falling to $200; the decentralized trading protocol 0x has a loophole (7.8-7.14)

Author | Qin Xiaofeng

Author | Qin Xiaofeng

Produced | Odaily

1. Overall overview

1. Overall overview

This week, startup YouNow said the U.S. Securities and Exchange Commission (SEC) has granted Reg A+ status to its ethereum-based token. In addition, there is a loophole in the trading contract of the decentralized trading protocol 0x v2.0. The use of the contract has been suspended, and no property loss has been found.

Second, the secondary market

Second, the secondary market

1. Spot market

1. Spot marketThe data shows that this week, the price of ETH fluctuated and went down, closing at 234.21 USDT during the week, a sharp drop of nearly 20% during the week.

image description

(Picture from Huobi Pro)

image description                             

(data from AIcoin)

(data from AIcoin)

In terms of funds, the funds fluctuated greatly this week. The net outflow of funds was the largest on Wednesday, exceeding 250 million US dollars; the net inflow of funds on Monday was relatively high, reaching 39 million US dollars.

(data from Tokenview)                            

(data from Tokenview)

Tokenview dataIt shows that the number of "transfers of more than 5,000 ETH" and "transfers of more than 10,000 ETH" have risen sharply, with a month-on-month increase of more than 70%. Among them, the time for the most transfers is Thursday.

image description

3. Ecology and technology

3. Ecology and technology

1. Development and technology

1. Development and technology

(1) Ethereum client Geth released version 1.9.0

The Ethereum client Geth released version 1.9.0, which improves CPU and disk performance, and natively supports new hardware wallets, such as Ledger Nano X (via USB) and Status keycard. If you use full node synchronization and archive synchronization, you can save more time and space. (Ethereum Foundation)

(2) Plasma issued a document introducing the virtual machine OVM that supports the Layer 2 protocol

The Ethereum Layer 2 project Plasma published an article introducing Optimistic Virtual Machine (OVM), a virtual machine that can support all Layer 2 protocols. The specification of OVM largely draws on the paper of the CBC Casper consensus protocol, describing Layer 2 as a direct extension based on the Layer 1 consensus. (Medium)

according to

2.Dapp

according toDappreview dataDappreview dataBetoken, the cumulative number of Dapp developments on the ETH chain reached 2,255, and 6 new Dapps were added this week;Betoken", the trading volume is 1 ETH, and the seven-day DAU is 6 people.

image description                   

(data from etherchain.org)

etherchain.org(Mining difficulty changes)

(Mining difficulty changes)

image description

In addition, new addresses began to increase this week, up 5% month-on-month, indicating that the activity of miners has increased.

4. News

4. News

1. US SEC grants Reg A+ qualification to Ethereum-based token YouNow

The U.S. Securities and Exchange Commission (SEC) has granted Reg A+ status to its ethereum-based token, startup YouNow said Thursday. According to an SEC filing, YouNow will initially distribute a total of 187 million tokens to users and creators. The token can be transferred between different apps and wallets, but not for fiat currency. (CoinDesk)

2. Samsung released the beta version of the blockchain SDK based on Ethereum, which will be officially released at the end of the year

According to people familiar with the matter, Samsung has recently released a beta version of the Ethereum-based blockchain software development tool "Samsung Blockchain SDK". The test objects are the Galaxy S10 series of Samsung Electronics and the Galaxy Fold, a foldable mobile phone that will be launched in the second half of the year. Samsung will officially release the tool at the end of the year, at which time Ethereum developers can use the tool to develop DAPP. (news1)

3. Analysis: In the second quarter of this year, Ethereum loan issuance reached 155 million US dollars

A recent analysis by Mythos founder Ryan Sean Adams shows that a whopping $155 million was issued to users on Ethereum during the second quarter, which is a direct increase from Q4 2018 and Q1 2019. (AMBcrypto)

4. There is a loophole in the decentralized trading protocol 0x

Will Warren, the founder of the decentralized trading protocol 0x, posted a blog saying that there is a loophole in the 0x v2.0 trading contract, and the team has suspended the use of the contract, and no property damage has been found. However, this also means that the currently deployed 0x contract cannot currently process transactions and cannot be used. The team is currently checking other smart contracts that have been released to ensure that other contracts do not have the same type of vulnerabilities. Will Warren pointed out that this vulnerability will not affect ZRX tokens, so users do not have to worry about asset loss. (Ox Blog)

5. Co-founder of Ethereum: Libra is more like a monitor with good performance

Ethereum co-founder Mihai Alisie recently expressed his personal views on Libra. It said: "Libra is more like a monitor with good performance, actively manipulating every move of people. The user's transaction is in the hands of these big companies, and they can block or freeze the user's transaction, and these situations are in Bitcoin or Ethereum. It’s impossible on paper.” (Bloomberg)

6. Tether issued an additional 200 million USDT this week

According to data from DAppTotal.com, Tether issued an additional 100 million USDT on July 8 and July 10 respectively. Currently, the total issuance of Tether’s ERC20 USDT on the Ethereum network has reached 1.4 billion.