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On October 8th, IT Home reported that in the early morning of October 7th Beijing time, the smart contract platform BNBChain suffered two consecutive (2:26, 4:43) hacker attacks, washing out 2 million BNB coins in just 2 hours. This currency alone reached $566 million, and with other virtual assets, it could reach $718 million

It has been a month since the collapse crisis of FTX, and just as many people believe that its former competitor, Coina, can "dominate" the cryptocurrency market, another crisis seems to be brewing.Data shows that, up to now, the original token BNB of Coin Security in the cryptocurrency exchange has fallen by nearly 15% in the past day and nearly 21% in the past week, the lowest level since July

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Source:@jason_ chen998Coin An released a Greenfield white paper on storage chain last weekHowever, we have not seen a significant industry hotspot and have not reflected it in the currency price. There is not much research on the storage field,The main reason is that there are too few players in this track, mainly Arweave and Filecoin, but storage is definitely the most important track in the blockchain field.Let me first help you sort out the outline and history of the entire storage system, so that we can have a better understanding. There has always been a controversial concept in web3, where many friends divide storage into two layers: on chain storage (blockchain, IPFS, etc.) and off chain storage (AWS, local databases, and all other heterogeneous platforms).A more reasonable division should be three layers: on chain storage (blockchain), decentralized storage (IPFS, etc.), and centralized storage (AWS, local database, etc.).People often confuse decentralized storage with on chain storage. Blockchain is a distributed ledger that also has data storage capabilities. However, what we currently broadly refer to as on chain content, whether it is NFT or Mirror, does not exist on the blockchain.Because in order to ensure that data cannot be tampered with, every full node needs to be backed up. When there are 10000 miners, even to store 1MB of information, the entire network will consume 10GB, which is very uneconomical. Therefore, the proposed solution is to store the data offline, and then place the offline storage address in the blockchain for indexing. Taking NFT as an example, it can be seen that metadata is indexed to an IPFS link, and when opened, it is a folder.Here we will extend IPFS, which is a content addressed peer-to-peer distributed storage system,The opposite of content addressing is address addressing. For example, when we store a photo on a cloud drive, the computer needs to know the IP address and domain name of the photo when downloading it in order to find the data in the corresponding location. However, if the copy does not exist or the server is shut down, the file will also be lost.But perhaps someone has downloaded this photo and stored it on their computer before, but your computer doesn't know that the other person has this photo,So to solve the problem of decentralized storage, it is necessary to solve the problem of using content retrieval instead of address retrievalIn this way, you don't need to tell the computer where to get the photos, but just tell the computer what the photos you need look like, and then the computer will ask everyone who has the photos in their hands, and if there are any, send them to me.But the content can be very large, and direct brute force retrieval is very time-consuming, soAfter hashing the file content, store the hash value as the file name, which allows for very fast retrieval of only other hash values that are the same as the hash value of the photo. Once found, ask the other person to send me a copy of their photo, which will improve efficiencyThe above is the general principle of IPFS, where storage has gone through three stages: centralization, multi centralization, and decentralization.So although IPFS is similar in concept to blockchain, it itself has no direct relationship with blockchainHowever, to achieve stable operation, many users need to contribute their storage space and network to become nodes. Therefore, Filecoin, inspired by Bitcoin, is an incentive layer built on top of IPFS to incentivize nodes that store data.So what everyone must understand is thatRegardless of the way storage is ultimately stored, it still exists on physical hard drives. Decentralized storage is a sharing economy that those with idle hard drive resources can contribute to.The concept of computing power sharing has already been used in early games such as Qiyun and Jirou, but it's just a drop in the bucket.But Filecoin, after all, is a layer that was added after the emergence of IPFS to incentivize storage service providers, butArweave integrates storage and chain more thoroughlyIt specifically developed blockweave, which, compared to the traditional chain structure of blockchain, links each block to the next block and the previous two blocks: a previous block and a historical recall block. Nodes must provide access proof when generating blocks.This is different from the proof of pow calculation. By accessing older random blocks in blockweave history, new blocks can be mined for rewards. This way, miners who store rare blocks can achieve greater returns in the long term. Through this mechanism, nodes can store as much historical data as possible without consuming a lot of resources like pow,So the originality and permanence of Arweave are higher than those of Filecoin.Just now, I mentioned that blockchain itself also has information storage capabilities, and some people call blockchain a decentralized database, but in realityThe most important responsibility of blockchain is to take on the decentralized ledger for recording transactions rather than the database, and storing a large amount of data is not the core of blockchain in terms of division of responsibilities.If blockchain is compared to a computer, although it also has memory to store a small amount of data, it requires an external hard drive to store a large amount of data.Instead of just cramming everything into memory,So decentralized storage takes on the responsibility of external hard drives, as long as the stored items can interact with the computer and memory and remain unchanged.As can be seen in Etherscan, the InputData in each transaction of Ethereum is the information written into the blockchain, but it can only be field data of simple keyvalue type, so it still needs to be supplemented by an external "hard drive".The above is an explanation of the entire storage system and the principles of Filecoin and Arweave, two storage hubs,After saying this, everyone should be very deeply aware of the importance and complementarity in the existence of blockchain.So this is one of the reasons why Coin An has become an entrant. With such a large race track and such a concentrated competitive head effect, Coin An's entry into this size should cause a stir, but there has been almost no movement.in my submissionThe main reasons are:oneStorage is the lower layer far away from users, making it difficult for users to perceive and understandAnd currently, the storage is also ToB and then ToC, such as Mirror connecting to Arweave. We write in Mirror, but we are not aware of the existence of Arweave;2. On the day of the Greenfield White Paper announcementHit the big hot spot of NostrLike Wang Feng, it's quite unlucky;threeThe storage track has not yet exploded;The prerequisite for storage is to have content, but currently there is a shortage of content production sources in the web3 application layerFor example, the largest track defi is not related to the content at all, and the NFT track has some connection with the content, but it is not very big, just a small image needs to be saved,After thinking about it, there are not many applications with a large number of "content storage" scenarios like web2 that have emerged in web3, so the storage track is far from users and few.However, as the application layer of web3 explodes, a large number of UGC products with C-side interactivity will naturally emerge, leading to a large demand for content storage. Therefore, we can see the end result, but the problem is that I cannot see the milestone of reaching the end process at the moment. Here, I would like to share myInvestment logic:After analyzing the LSD track before, I deduced that as Ethereum switches to POS, low threshold pledge services such as Lido will first emerge, resulting in a large number of verification nodes. However, the centralization of operators will greatly damage Ethereum network security,So the ultimate goal is to solve the problem of operator centralizationAfter seeing the final outcome, I found three more milestones.The beacon chain of 20 has been launched, the POS of 22 has been merged, and Shanghai has been upgraded on 23,The purpose of finding milestones is to give you a psychological expectation of the moment when the final game will arrive, as well as to find a suitable opportunity to enter, otherwise the ambush will be too early and you will have to wait for several yearsAfter the upgrade and withdrawal of funds in Shanghai in 2023, it greatly stimulated the enthusiasm for pledge, thus exposing the problem of operator centralization,So the first six months of Shanghai's upgrade are a good time to enter the venueOtherwise, we will be waiting for the first milestone of 2020 in the next two years.I can see the final outcome of the deposit, but I still cannot see through the milestones in the middle. However, as the infrastructure improves and I also see itThis year, application layers such as socialfi are rolling outin my submissionPerhaps it is possible to try a small amount of layout to store related assets, which does not represent investment advice, everyone DYOR.Okay, back to Greenfield, as mentioned at the beginning, its ecosystem revolves around usersTrinity architecture: BSC chain, Greenfield, and Dapps. Coin security has a transaction chain, followed by a storage chain. Developers develop their own DAPP based on these two, and Greenfield is a side chain with a native cross chain bridge with BSC, both using BNB as tokens. This combination of fists will complete the Coin security ecosystem.So on the one hand, the storage track is large enough to attract the interest of Coin An personally, and on the other hand, it is also an important part of supplementing the Coin An ecosystem;By reading the white paper, it can be seen that the core of Greenfield is a storage chain and storage node network, which is actually similar to Arweave;The storage chain has its own governance logic and incentive system, which stores metadata, block status data, account information and permissions, billing and other data;It is worth noting that metadata exists on the chain, and there is a separate object storage system that stores object data off the chain. Taking NFT as an example, metadata is placed on the chain instead of IPFS. However, the image that occupies the most space in metadata itself is still located below the chain. This design may be based on performance and cost considerations, and when using data, the off chain object data is then referenced through the on chain metadata.BNB, as the original token of the storage chain, is used for governance and payment of GAS, which can flow between BSC and Greenfield, so this perspective is another value empowerment for BNBBut personally, I don't think BNB's price will benefit a lot from the storage track, because BNB's price is a complex, and storage empowerment is only one factor that affects the price,BNBin my submissionIt's better to directly invest in tokens that specialize in storage, because the empowerment of these tokens comes from 100% storage dividends, and of course, everything is DYOR;It is also worth noting thatThe Greenfield format is fully compatible with Ethereum EVM, making it easy for existing products to access;It is also interesting that the management of permission groups is quite detailed, which can control the permissions of each account for data operations such as adding, deleting, modifying, and querying. This is quite practicalIntroducing data integrityChallenge proof,Similar to OP, it can submit challenge transactions to nodes,Greenfield also randomly triggers challenge events, similar to sampling checks,If a challenge is accepted, the validator will check the challenged node. If the challenge is successful, the initiator will receive a reward, and the node will be punished. If the challenge fails, the data will have a freeze period and will not be challenged again,To avoid resource waste.Interestingly, it is not only used for data storage, but also supports data-based economic value creationFor example, the data permissions mentioned earlier can also cross chain to BSC and become a digital asset of BSC, which is interesting. My data is valuable, and my data can also be valuable for operations.The participants in the entire Greenfield ecosystem are as follows:BSC undertakes DAPP deployment, data resource mirroring, cross chain, and consensus;Greenfield is responsible for payment, data resources, cross chain, and consensus. Please note that as mentioned earlier, Greenfield also has its own governance mechanism, so it also has its own consensus;Then the SP node interacts with Greenfield for data;The diagram on the right shows the network structure, which is similar to the OP set of validators with elections, etc;The account system in Greenfield is independent and compatible with BSC and Ethereum in format, so it also has the conditions for Wallet to support Greenfield in the future.It is interesting that Greenfield, as a chain, was developed based on Cosmos,Cosmos' position as the leader of Layer0 seems to be getting more and more stable, and the recently popular Canto is also based on Cosmos. However, personally, I think Canto's set has a bit of Luna's shadow.The trouble with Coin Security lies in the fact that BSC is Fork Ethereum, unlike APTOS and SOLONA, which do not have their own independent technical system, making it difficult to cultivate their own developer community,This issue is also encountered by many EVM chains. As a storage chain for developers, Greenfield needs to work hard to establish developer loyalty. Therefore, Coin Security needs to first switch the stock DAPP to Greenfield before attracting incremental growth.Based on the analysis of the storage track of Coin Security Greenfield, I am personally optimistic about the storage track and look forward to the emergence of more truly available application layer products,Whether smart wallets and account abstractions are used to lower user entry barriers in infrastructure, or performance enhancing chains such as aptos and layers, the infrastructure for application layer explosion has been laid, and it is time to build a nest to attract talent.Disclaimer and RisksPlease review the disclaimer, terms, and risks to understand the legal statements, content, and risk factors of this document. In particular, you should conduct your own research (DYOR) before making any investments and be aware of the risks associated with forward-looking statements in this document.

Today, Twitter users noticed that the famous Doge image was added to a prominent location. You can see it firsthand on Twitter

The price of Ethereum expanded and fell below $1920 to the US dollar. If the ETH falls below the support range of $1820, it may continue to decline.Ethereum further fell below the support level of $1920.The price is below $1920 and the 100 hour simple moving average.Breaking through the main bearish trend line on the hourly chart of ETH/USD, the resistance level is around $1860 (data from Kraken).If it breaks through the levels of $1920 and $1975, the currency pair may begin to rise significantly.Ethereum price turns redEthereum's price gained bearish momentum after closing below the support level of $2000. ETH will expand its decline below the support levels of $1950 and $1920, similar to Bitcoin. 1,880 1,827

Image source @ Visual ChinaAt 23:00 Beijing time on February 7th, the Ethereum Zhejiang testing network successfully activated the Shanghai upgrade on epoch1350, taking 13 minutes to complete, and successfully simulated the withdrawal of pledged ETH for the first time. (Note: The term 'Shapella' originates from Shanghai and Capella and represents improvements in two plans, which can simplify the process of simultaneously extracting rights pledge ETH at the execution layer and Beacon chain

During today's trading session, Ethereum and cryptocurrency markets have shown strength and are trading in green. The expectations surrounding the upcoming major upgrade of ETH in "Shanghai" may support a positive price trend

The current price of ETH is $1867.62

Recently, the Ethereum market has performed outstandingly, with its price breaking its recent high on May 5th, reaching $1945.During the same period, although Bitcoin remained volatile at a high point, it did not break a new high and its rise was significantly weaker than Ethereum.As of April 10th, ETH/BTC has risen by about 6.92% so far this month, reaching a maximum of 0.0679BTC, rebounding nearly 8% since March 20th.As of writing, Bitcoin has fallen below $28000, with a price of $27883 and Ethereum at $1830.The main reason why Ethereum has shown a strong upward trend and outperformed Bitcoin is due to the upcoming Shanghai hard fork upgrade on April 12th!Many experts believe that in the long run, hard forking is beneficial for Ethereum. up to now,The Shanghai craze helped Ethereum outperform Bitcoin in AprilCurrently, the positive signals surrounding Ethereum are evident:According to Glassnode data, the total value of ETH2.0 deposit contracts has just reached a 10 month high of $31601215618.82.According to data from the official website mainnet.beconcha. in of Ethereum, the total number of Ethereum pledges has exceeded 18 million ETHs, with a total of 18044134 ETHs pledged. The total number of Ethereum beacon chain validators has exceeded 560000.In addition, the Ethereum Beacon Chain ETH pledge APR (annual return rate) is 4.65%.L2BEAT data shows that as of now, the total lockup volume on Ethereum Layer2 is $9.17 billion, up 0.23% in the past 7 days. Among them, the largest lock-in volume is the expansion plan, ArbitrumOne, which is approximately 6.002 billion US dollars, accounting for 65.88%. The second largest lock-in volume is Optimism, which is 1.954 billion US dollars, accounting for 21.45%.The Ethereum Exchange showed a net transfer out status within 24 hours, with a net transfer out amount of 7.1344 million US dollars; Bitcoin experienced a net transfer phenomenon, with a 24-hour net transfer of $10.1 million.In addition to the good performance of data on the chain, the application scenarios of Ethereum are also constantly expanding, bringing hope for further breakthroughs in the market.Headquartered in Zurich, SwitzerlandFinancial bank IncoreBank announced that it will provide customers with Ethereum pledge servicesThe bank stated that customers using its Ethereum pledge service must fully comply with the "Know Your Customer (KYC)" and anti money laundering (AML) compliance requirements.Mark Dambacher, CEO of IncoreBank, stated that the bank will provide customers with Ethereum pledge services through quarantine wallets and comply with regulatory and tax regulations.However, although the Ethereum market is dominated by bullish sentiment, from today's market trend, the downward correction performance is still very obvious:Ethereum's price dropped as low as $1822 today, a daily decrease of 1.61%, while Bitcoin's price dropped as low as $27790, a daily decrease of 0.46%.Greeks.live macro researcher Adam tweeted that despite the upcoming upgrade in Shanghai, the implied volatility IV of Ethereum options has actually experienced a significant decline, with a drop of up to 8% in the past two days.He believes that the main reason for the decline in IV is the decrease in market liquidity caused by the Easter holiday. However, at the current level of volatility, it is abnormal for monthly IV to fall to the same level as Bitcoin, and a large number of users are adding positions to short the future volatility level.

Ethereum is the world's second largest cryptocurrency, and its recent rise has come to a sudden halt as Ethereum (ETH) has recouped all its gains after the highly anticipated Shanghai upgrade.Although many people have high hopes for this upgrade and promise to improve network speed and scalability, the market seems to have reacted negatively to the news

After the upgrade of Shanghai and Capella (collectively known as Shapella), Ethereum (ETH) cancelled its pledge for the first time since its launch in December 2020. Its price exceeded the psychological threshold of $2000 and remained stable, allowing investors to try to measure its future trendFor this reason, some cryptocurrency traders useBlockchain Center's EthernetFang Caihong's price chart tracks the historical trend of digital assets relative to various moving averages (MAs), which may help identify certain trends and enable people to make investment decisions