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Ethereum layer 2 zkEVM ‘Scroll’ confirms mainnet launch

Blockchain data from Etherscan suggest Scroll’s mainnet was live over a week ago.

Scroll, a new contender in the zero-knowledge Ethereum Virtual Machine (zkEVM) space that works to scale the blockchain, has confirmed the launch of its mainnet.

The team behind Scroll announced the launch in an Oct. 17 post and added that existing applications and developer tool kits on Ethereum can now migrate to the new scaling solution.

“Everything functions right out of the box,” the Scroll team said.

A zkEVM solution such as Scroll’s aims to provide lower transaction costs at a higher throughput for decentralized applications running on Ethereum.

It works by batching thousands of transactions off-chain into one, then submitting a proof consisting of a minimal data summary to Ethereum’s mainnet.

Blockchain data suggests Scroll had withheld the news that its mainnet was live since Oct. 8 — the date at which the first smart contract was deployed on thScroll mainnet, according to Etherscan data.

Scroll said the mainnet launch came after 15 months of extensive testing and security audits across three separate testnets.

“Our bridge and rollup contracts were audited by OpenZeppelin and Zellic,” Scroll added. Its zkEVM circuits were reviewed by Trail of Bits, Zellic, and KALOS.

Across its three testnets over 450,000 smart contracts were deployed enabling over 90 million transactions across 9 million blocks. 280,000 ZK-proofs were also generated the firm said.

About a month ago, Scroll co-founder Ye Zhang told Cointelegraph Scroll would launch with centralized features but plans to increasingly decentralize over time.

“We will have a centralized sequencer and the central approver button,” Zhang said. He added a plan is in place to remove that button, however.

“We have a roadmap [...] To solve the single point of failure and to incentivize the community to build better proving hardware.”

Zhang said the Scroll team will also pitch several proposals to let the community discuss what’s best for Scroll moving forward.

Related: ConsenSys launches Linea zkEVM to further scale Ethereum

Scroll was founded in 2021 with the goal to be more community-driven. Other zkEVM solutions working to scale Ethereum include Polygon, zkSync, StarkWare and Immutable.

Jordi Baylina, technical lead of Polygon Hermez zkEVM, recently told Cointelegraph that such competition in the zkEVM space is only going to make the Ethereum ecosystem more robust:

“Having different projects adds a lot of experience, and it’s also a way to test different approaches, ways of handling things or solving things,” he said.

Magazine: Attack of the zkEVMs! Crypto’s 10x moment

US Banks’ Unrealized Losses Explode by $118,400,000,000 in Three Months As FDIC Declares 66 Banks on ‘Problem List’

South American City of 15,000,000 To Launch Blockchain-Based Digital Identification Services

South American City of 15,000,000 To Launch Blockchain-Based Digital Identification Services

Argentina’s capital city is teaming up with Self-Sovereign Digital Identity (SSI) protocol QuarkID to launch a digital identification service that uses the layer-2 blockchain zkSync Era. According to a press release, Buenos Aires will roll out the blockchain-based identification initiative for its 15 million residents in October. Citizens living in the city can download the […]

The post South American City of 15,000,000 To Launch Blockchain-Based Digital Identification Services appeared first on The Daily Hodl.

US Banks’ Unrealized Losses Explode by $118,400,000,000 in Three Months As FDIC Declares 66 Banks on ‘Problem List’

Arbitrum (ARB) falls to all-time low as network usage metrics decline

ARB’s price slumps to a new low as a decline in TVL, a decline in active addresses engaging with its DApps and a general malaise across the crypto market take their toll.

Arbitrum has emerged as a leading contender within the Ethereum network’s layer-2 scalability solutions, boasting a significant total value locked (TVL) and notable activity. However, between Sept. 9 and Sept. 11, the price of Arbitrum (ARB) tokens experienced a sharp decline of 14.5%, marking its lowest point in history.

Investors are now eagerly seeking insight into the factors driving this movement and questioning whether Arbitrum still possesses the competitive edge, especially considering that irrespective of the ARB token performance, the network TVL exceeds $1.6 billion.

Arbitrum (ARB) vs. competitors Polygon (MATIC), Optimism (OP) and Loopring (LRC). Source: TradingView

It is worth noting that the past week has been challenging for most cryptocurrencies, but among Ethereum’s scaling solutions, none experienced a drop exceeding 9%, except for Arbitrum.

ARB governance proposals bring questionable benefits

One potential source of concern stems from the absence of any instances of fraud proof issuance since the launch of the Arbitrum mainnet in August 2021. Offchain Labs confirmed this information to Cointelegraph on Sept. 4. Developers, however, have explained that this situation aligns with the intended operation of the system, as validators with malicious intentions risk losing their entire stake. Consequently, this data is unlikely to have significantly impacted the price in the past week.

Additional factors that may help elucidate the recent price downturn are associated with governance proposals from Arbitrum's decentralized autonomous organization (DAO). The first proposal, posted on Sept. 2, aims to allocate up to 75 million ARB tokens from the project’s treasury to address “short-term community needs” for active decentralized applications (DApps) within the ecosystem. However, even if approved, this allocation represents less than 2% of the DAO treasury holdings and is unlikely to have triggered the ARB token price correction, regardless of one’s stance on the proposal.

Another governance proposal that has garnered attention was introduced on Sept. 9 by PlutusDAO. This proposal seeks to return tokens from the DAO treasury to ARB holders through the activation of a staking mechanism, creating a native yield for participants, which could involve up to 2% of the total supply annually. Nevertheless, some investors view this inflationary approach as unnecessary and argue that it only exerts downward pressure on prices.

As user Psy highlighted on the X (formerly Twitter) social network, “dilution through inflation” does not contribute positively to the ecosystem, as it merely distributes DAO treasury holdings.

Beyond token governance, there are also concerns related to liquidation risks on both centralized and decentralized exchanges that offer leveraged trading. For instance, Lookonchain has observed a whale withdrawing ARB tokens from the Aave lending platform and transferring some to Binance.

The challenge with this analysis lies in the ambiguity of cause and effect. Typically, leverage long positions are compelled to close when token prices have already fallen, rather than the reverse. This underscores the importance of investors examining Arbitrum’s activity and deposit trends over the past couple of months, which could have potentially triggered the recent price performance.

Declining network activity is most likely the culprit

Arbitrum's TVL has notably declined to $1.67 billion, marking its lowest level since mid-February.

Arbitrum network total value locked. Source: DefiLlama

This 25% decrease over the past two months raises several concerns, primarily indicating a loss of investor confidence. This downturn has the potential to reduce liquidity and undermine the project’s overall viability. Furthermore, it might deter new participants, impeding network growth and adoption.

Next, it's crucial to examine the number of active addresses within the network's top DApps.

Arbitrum network top decentralized applications by active addresses. Source: DappRadar

There is a noticeable decline in 30-day active addresses, even among well-established DApps like Uniswap, 1inch, Radiant, SushiSwap and GMX. Therefore, when considering the decrease in TVL alongside reduced user activity, it becomes evident that there is a substantial decline in demand for the network. While pinpointing a singular cause for this movement is challenging, one can speculate that competing chains such as zkSync Era and Coinbase’s Base may have contributed.

The data suggests that Arbitrum’s 14.5% correction appears to result from a combination of investor dissatisfaction with the governance mechanism and the network’s lackluster activity, despite offering significantly lower fees compared to Ethereum. Unless there is an upswing in transactions and an expansion of its user base, it is unlikely that ARB will be able to close the price performance gap with its competitors.

This article is for general information purposes and is not intended to be and should not be taken as legal or investment advice. The views, thoughts, and opinions expressed here are the author’s alone and do not necessarily reflect or represent the views and opinions of Cointelegraph.

US Banks’ Unrealized Losses Explode by $118,400,000,000 in Three Months As FDIC Declares 66 Banks on ‘Problem List’

Matter Labs co-founder proposes ‘Ethereum Supreme Court’ for on-chain disputes

The crypto entrepreneur believes it would scare off bad actors and strengthen the state of the Ethereum network.

Matter Labs co-founder and CEO Alex Gluchowski has proposed an Ethereum court system resembling a hierarchical court system similar to the real world.

In a Sept. 2 post on X (Twitter), Gluchowski floated the idea for an “Ethereum Supreme Court” — which would work similar to the United States Supreme Court — serving as a final stop for parties to dispute smart contract issues rather than needing to take matters to a traditional lawyer or court.

“The most important function of such a system will be to protect protocols against political inference from the outside. It will serve as a great deterrence mechanism, and will elevate the role of Ethereum as a powerful network state,” said Gluchowski.

According to Gluchowski’s concept, disputes and emergency upgrades would be handled by a hierarchical system of on-chain courts. The final stop, however, would be an Ethereum layer-1 soft fork as the “Court of Final Appeal.”

Gluchowski said that in this system, every protocol would have its own governance with normal and emergency upgrade mechanisms, and would also designate a special contract which can trigger an appeal.

When there is an emergency upgrade to a protocol, there would be an appeal period, during which any user can submit a challenge to the higher court. However, they’ll have to put up a pre-defined bail deposit.

Each court specifies the higher court to appeal to, with the Ethereum Supreme Court serving as the final destination for challengers, Gluchowski said.

An example court heirachy would see protocols like Aave and Uniswap would contest matters in a court such as CourtUnchained or JusticeDAO. After those courts reach a decision, a party can appeal to the Ethereum Supreme Court.

However, there would need to be a strong social consensus for the on-chain court system to work, Gluchowski acknowledged.

He added that it would be expensive so that only “truly extraordinary” cases will be brought before it.

“[It will need to be] worthy of the attention of the entire Layer-0 (the social consensus) of Ethereum. Think of a bug in @Uniswap, a major L2, a Defi protocol with a systemic risk, etc.”

Related: On-chain tool to seize crypto is a purist’s nightmare but a must, says CEO

Gluchowski noted there were several existing solutions to such disputes already, but argued that they aren’t effective. 

For example, enabling time-locked features on smart contracts isn’t suitable in emergency situations and introducing a security council can mitigate the problem, but won’t solve it, while carrying its own risks.

“A security council could only freeze the contract temporarily, requiring a token governance approval for an emergency upgrade. But now a malicious majority of undercollaterized stakers could perform an evil take-over upgrade and steal all the assets,” he explained.

Gluchowski said he and the team at zkSync — an Ethereum layer 2 scaling solution created by Matter Labs — will happily fund research into the proposal.

Magazine: ‘Moral responsibility’ — Can blockchain really improve trust in AI?

US Banks’ Unrealized Losses Explode by $118,400,000,000 in Three Months As FDIC Declares 66 Banks on ‘Problem List’

Matter Labs CEO vehemently denies copy-pasting code from Polygon Zero

Matter Labs CEO Alex Gluchowski said that the allegations were unfounded, misleading and disappointing.

Alex Gluchowski, the co-founder and CEO of zkSync creator Matter Labs, has denied copy-pasting code from Polygon Zero, after the zero-knowledge scaling firm accused them of copying the code from their system without proper attribution. 

On Aug. 3, Polygon Zero published a long blog post saying they believe Matter Labs copied what they described as “performance-critical components” of their zero-knowledge system called “Plonky2.” The code was seen on Matter Labs’ recently-released proving system dubbed “Boojum,” without attributing the code’s original authors, according to Polygon Zero.

The zk-scaling company said that this behavior is detrimental to the developer ecosystem. The firm highlighted that it can potentially hurt smaller development teams as better-funded competitors could simply reappropriate their work without proper attribution. They wrote: 

“Copy-pasting source code without attribution and making misleading claims about the original work is against the open source ethos and hurts the ecosystem.”

Responding to the allegations, Gluchowski denied that they simply copy-pasted the code. The executive addressed the issues brought up by Polygon Zero through a long tweet. According to Gluchowski, every decision they made toward building zkSync was based on integrity and transparency.

The Matter Labs CEO noted that the Polygon Zero team’s passion for what they do may have led to rushed arguments and inaccurate statements. “Today’s accusations are unfounded, misleading, and extremely disappointing coming from a team I highly respect,” he wrote.

Related: Decentralized Web3 data service taps ZK-proofs for tamper-proof SQL queries

Gluchowski said that both Plonky2 and Boojum are implementations of RedShift construction, which was introduced by Matter Labs, three years before the Plonky2 paper. The executive claimed that the developers of Plonky2 did not give them credit, but noted Redshift in the paper.

Despite this, the CEO admitted that they "could have done it better," and said that they will apply the more standard approach for attribution which the community pointed out.

Magazine: Here’s how Ethereum’s ZK-rollups can become interoperable

US Banks’ Unrealized Losses Explode by $118,400,000,000 in Three Months As FDIC Declares 66 Banks on ‘Problem List’

Era Lend on zkSync exploited for $3.4M in reentrancy attack

The lending app was drained of funds using a “read-only reentrancy” bug, a type of vulnerability that is often difficult for auditors to spot.

Lending app Era Lend on zkSync has been exploited for $3.4 million worth of crypto, according to a July 25 report from blockchain security firm CertiK. The attacker used a “read-only reentrancy attack” to drain the funds, which is a type of attack that interrupts a multi-step process and then causes it to continue after a malicious action has been performed. Specifically, a “read-only” reentrancy is one that does not update the state of a contract.

According to the report, the attacker drained funds in two separate transactions, using the externally owned account 0xf1D076c9Be4533086f967e14EE6aFf204D5ECE7a. They relied on a vulnerability in the “the callback and _updateReserves function” to manipulate a contract into reporting old values that had not yet been updated.

Era Lend is a fork of the Syncswap project, and CertiK claimed that other projects based on Syncswap may also be vulnerable to the exploit.

On-chain sleuth and Twitter user Spreek reported that the Syncswap code allows a user to “burn, then callback before update_reserves is called,” causing the oracle to report incorrect values.

Spreek also reported that the Era Lend team had acknowledged the attack and paused the protocol’s zkSync contracts to prevent further exploits.

Another blockchain investigator, known on Twitter as Saul, reported that the attack had affected stablecoin USDC+, which is issued by the Overnight Finance protocol. According to Saul, the Overnight team has acknowledged the exposure and has paused its own contracts as well. Over $261,000, or 7.86% of the total worth of the collateral backing the stablecoin, may have been lost.

In a June 7 blog post explaining how read-only reentrancy attacks are carried out, pseudonymous blockchain investigator Officer’s Notes stated that these vulnerabilities are difficult for auditors to spot, since “Typically, auditors and bug hunters are only concerned with entry points that modify state when looking for reentrancy.”

To help alleviate this problem, Officer’s Notes recommends that auditors use specialized software to aid them in finding these vulnerabilities.

Era Lend runs on the zkSync network, a zero-knowledge proof Ethereum layer-2 rollup. In April, the network’s total value locked reached over $110 million. The network’s developers intend to create an ecosystem of interoperable chains called “Hyperchains” by the end of the year.

US Banks’ Unrealized Losses Explode by $118,400,000,000 in Three Months As FDIC Declares 66 Banks on ‘Problem List’

DeFi driving zkSync growth as 1inch deploys on Ethereum layer-2 scaling platform

1inch Network is the latest decentralized Finance protocol to deploy on Ethereum layer-2 scaling platform zkSync Era.

Decentralized finance (DeFi) protocol 1inch has deployed its aggregation and limit order protocols on Ethereum layer-2 scaling solution zkSync Era to tap into faster and cheaper transactions.

1inch Network is the latest of a host of Ethereum-based platforms and services to deploy on the zero-knowledge proof (zk-proof) based scaling platform. Uniswap, SushiSwap, Maker and Curve Finance have also launched on the zk-proof roll-up zkSync Era.

1inch Network co-founder Sergej Kunz highlighted the promise of the layer-2 solution as his platform joins a handful of first-movers to integrate with the zk-proof powered protocol:

“As zkSync Era gains steam, 1inch users will benefit from faster and cheaper transactions.”

A statement from Matter Labs CEO Alex Gluchowski, who heads up the zkSync development firm, notes that DeFi protocols have been a major factor in the uptake of zkSync era:

“DeFi has been a driving force behind zkSync Era’s explosive growth that has seen over $200 million in TVL driven to the protocol in just three short weeks, and we expect the deployment of 1inch to contribute to even greater adoption and usage of zkSync Era.”

Gluchowski said that 1inch Network’s position as the largest decentralized exchange aggregator by on-chain volume would provide deeper liquidity to zkSync Era. The deployment is also touted to offer faster trades, better rates and lower transaction slippage.

Related: Symbiosis integrates zkSync: ‘Natural evolution’ of scaling solutions

zkSync is among a number of layer-2 solutions that have pioneered the use of zk-rollups to increase Ethereum’s throughput and scalability. The technology enables layer-2 protocols to move computation and blockchain state storage offchain, allowing these platforms to process thousands of transactions before providing summary data proofs to Ethereum’s mainnet.

Matter Labs secured $200 million during a series-c investment round in November 2022, taking its total fundraising to over $450 million to continue the development of its Ethereum scaling platform.

Other major Ethereum development firms, including Polygon and ConsenSys, have also developed their own zk-proof powered scaling protocols. ConsenSys released its zkEVM rollup to its public testnet on March 28.

Meanwhile, Polygon co-founder Sandeep Nailwal described zk-rollups as “the holy grail of Ethereum scaling” upon the release of its open-source zkEVM Ethereum scaling technology to the mainnet on March 27.

Magazine: ZK-rollups are ‘the endgame’ for scaling blockchains: Polygon Miden founder

US Banks’ Unrealized Losses Explode by $118,400,000,000 in Three Months As FDIC Declares 66 Banks on ‘Problem List’

Aave’s proposal to launch on zkEVM passes ‘temperature check’ vote

A proposal to deploy the third version of lending protocol Aave has recently passed a “temperate check” with an overwhelming favorable majority.

A "temperature check" proposal to deploy the decentralized exchange (DEX) Aave on the zkSync Era Mainnet has passed with overwhelming support from the Aave community. 

When voting closed on April 16 more than 99% of Aave (AAVE) token holders voted in favor of launching the third version of the lending and borrowing protocol on the zero-knowledge Ethereum Virtual Machine (zkEVM).

According to the proposal first pitched on March 26, the launch will be limited to USD Coin (USDC) and Ether (ETH).

Now that the temperature check has indicated a "positive sentiment," the next steps listed in the proposal will be to proceed to another stage for further discussion, followed by risk parameter evaluation and finalization of the proposal.

If the next stages are successful the proposal will be submitted for voting and on-chain governance approval.

Only around 0.02% voted against the proposal with a further 0.02% abstaining from voting.

According to the proposal, deploying on zkSync can benefit the Aave ecosystem by introducing new users into decentralized finance (DeFi) and cementing Aave as a premier borrowing platform within the zero-knowledge ecosystem.

Related: Stablecoin adoption could lead to DeFi growth, says Aave founder

The Aave community previously voted to deploy the Aave V3 codebase on zkSync's v2 Testnet, which was approved in another off-chain vote.

Decentralized exchange Uniswap is also set to launch on the zkEVM solution from scaling solution provider Polygon after a governance proposal was successfully passed.

In November 2022, Aave changed its governance procedures after it was hit by a $60 million short attack that ultimately failed.

Magazine: Unstablecoins: Depegging, bank runs and other risks loom

US Banks’ Unrealized Losses Explode by $118,400,000,000 in Three Months As FDIC Declares 66 Banks on ‘Problem List’

Symbiosis integrates zkSync: ‘Natural evolution’ of scaling solutions

Cross-chain DeFi platform Symbiosis has integrated zkSync to improve transaction speed and reduce fees on its automated market-making protocol.

Cross-chain automated marker maker Symbiosis has onboarded layer-2 scaling protocol zkSync to improve speed and reduce fees of token swaps on its platform.

The decentralized exchange (DEX) was launched in March 2022. It provides single-sided stablecoin pools that deliver zero impermanent loss to liquid providers. It also facilitates ‘any-to-any’ native asset swaps on its platform across Ethereum Virtual Machine (EVM) and non-EVM networks.

Nick Avramov, co-founder of Symbiosis, told Cointelegraph that the integration of zkSync will provide one-click swaps from Ethereum, Polygon, Avalanche, BNB, Telos and other blockchains into zkSync and back.

The additional functionality also removes the need for users to switch between different wallets and interfaces. Avramov also confirmed that the integration improves the variety of token swaps through its DEX, supporting any-to-any native swaps to and from zkSync.

Related: ConsenSys zkEVM set for public testnet to deliver secure settlements on Ethereum

The integration of zkSync is also aimed at making liquidity transition to and from zkSync ‘secure, fast and cheap,’ while Avramov also highlighted the importance of layer-2 scaling protocols to various DeFi platforms and services.

“Scaling layers like Optimistic and ZK rollups are extremely important for the next big wave in Web3, mostly because they're lowering entry barriers both in terms of the price per swap and user experience of value-added services built on top.”

The Symbiosis co-founder also highlighted his personal view that ZK rollups could outcompete optimistic rollup solutions like Arbitrum and Optimism. Avramov also believes it is crucial for cross-chain players and interoperability layers to support ZK solutions as soon as possible.

"ZK represents an inevitable and natural evolution among scaling solutions.”

Symbiosis has processed over $100 million in total transaction volume in stablecoins, serves over 12,000 unique wallet addresses and an average of 3,000 daily transactions.

Ethereum-scaling ZK rollups continue to grab headlines in 2023. As previously reported by Cointelegraph, Ethereum layer-2 scaling platform Polygon released its zkEVM to mainnet beta, allowing developers to deploy smart contracts with increased finality and lower costs.

The scaling technology is not only limited to Ethereum or other smart contract blockchains. Swiss-based nonprofit ZeroSync Association is currently developing zero-knowledge proof tools that will allow Bitcoin (BTC) users to expedite the process of verifying individual blocks and, eventually, the entire blockchain.

Magazine: Crypto audits and bug bounties are broken: Here’s how to fix them

US Banks’ Unrealized Losses Explode by $118,400,000,000 in Three Months As FDIC Declares 66 Banks on ‘Problem List’

zkSync Era denies 921 ETH ‘stuck forever’ in smart contract

One member of the cryptocurrency subreddit pointed out that “EVM equivalent” compilers like zkSync Era does not necessarily mean it is fully “EVM compatible.”

Matter Labs, the team behind Ethereum layer 2 scaling solution zkSync, has denied that 921 Ether (ETH)  worth $1.7 million will be "stuck forever" in one of its new projects.

The statement comes as one zkSync project is currently experiencing issues in transferring the funds that it accumulated during its token sale.

In a response tweet, Matter Labs confirmed that they're working to solve the problem and will soon publish a "detailed update."

The issue appears to have been caused by its new zero-knowledge Ethereum Virtual Machine solution, "zkSync Era," not being fully Ethereum Virtual Machine (EVM)-compatible.

While the zero-knowledge rollup solution is “EVM-equivalent,” the two systems compile smart contract code ever so slightly differently from one another, which, in some cases may result in errors in the compiling process.

Several members of the “CryptoCurrency” subreddit expressed their frustration on the matter:

“Another example of why a chain shouldnt be rushing its mainnet launch. Always remember this guys, EVM compatible =/= EVM equivalent.”

"I'm all in for seeing Zero Knowledge tech becoming more and more relevant in the crypto space. However, these chains also have to take into consideration the fact that people's funds are at stake,” said another.

Related: zkSync Era launches with Uniswap and Sushi — First zkEVM on mainnet

The project is believed to be GemstoneIDO (GEMS). On the zkSync explorer page, the last four transactions requests have "failed," while exactly 921 Ether is stored in its smart contract.

GemstoneIDO is believed to be the project impacted on zkSync. However, Matter Labs has not confirmed this. Source: zkSync Explorer

Matter Labs launched zkSync Era on mainnet last week, promising that decentralized exchanges Uniswap and SushiSwap would be live in a matter of days. That hasn't happened yet, however projects including Argent, Celer Network and MetaMask are live on the network now.

Cointelegraph reached out to Matter Labs, who reiterated funds weren't stuck forever and promised an update shortly.

This is a developing story, and further information will be added as it becomes available.

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US Banks’ Unrealized Losses Explode by $118,400,000,000 in Three Months As FDIC Declares 66 Banks on ‘Problem List’