- Apple denied Gnosis from listing its Ethereum wallet because it supports the storage of NFTs.
- Arbitrum was offline for 45-minutes due to a bug causing its sequencer to get stuck.
- An attacker attempted a 550 block reorg attack with false PoW on Ethereum.
- Zapper Quests Season 2 begins next week, with new NFTs and rarity levels.
Arbitrum Experiences Sequencer Outage
Arbitrum, the Optimistic Rollups layer 2 scaling solution on Ethereum, experienced a 45-minute outage. At approximately 10:14 AM ET, users began reporting problems with the network as the Arbitrum Sequencer was offline. Users were unable to process transactions during the outage with the Arbitrum explorer showing a pause on validated blocks. About an hour later, Offchain Labs director AJ Warner announced on Discord that Arbitrum One is back online and operational. Offchain Labs cautioned users that further outages are possible in the early days of the network.
All transactions that had been accepted by the Sequencer were included and not re-ordered. Transactions accepted by the Sequencer between 10:13 and 10:14 AM ET were re-assigned a timestamp when the Sequencer returned online at 10:59 AM. The root cause of the downtime was a bug causing the Sequencer to get stuck when it received a large burst of transactions in a short period of time. A fix for the issue has since been deployed. The arbitrum bridge remained unaffected during the downtime.
Coincidentally, the Solana blockchain also experienced a network outage at the same time, however Solana was down for 11 hours. Solana’s validator community eventually elected to coordinate a restart of the network. Solana claims resource exhaustion in the network caused a denial of service. A greatly anticipated IDO for Grape Protocol reportedly flooded the network with bots, affecting the outage.
Attacker Attempts Ethereum Reorg Attack
An attacker attempted a 550 block reorg attack with false PoW on Ethereum. The attack was first flagged by Alex S. of Flexpool shortly after 3am ET. He noted that some of his nodes were recording the “highest block” of the chain at a block number that technically did not exist.
Researchers speculated that the cause was a node publishing a version of the chain with invalid proof-of-work. Someone published an invalid chain that was rejected by most clients, however the attacker was able to fool ~25% of Nethermind clients. The attack affected less than 1% of the network.
Ethereum researcher and Geth developer Marius Van Der Wijden says he doesn’t believe it was a directed attack against nethermind, but rather someone experimenting and validating their experiment on mainnet. Widjen believes it is unlikely that a similar exploit could scale to a degree with major impact on the network.
Zapper Announces Season 2 Quests
Zapper.fi has announced season 2 of quests, a loyalty program that rewards users with points and NFTs for completing tasks on the platform. Season 2 of Zapper Quests will go live on Thursday, September 23rd at 5pm PST.
Zapper has added new features to the program including Volts, a points system that gives users the ability to craft new NFTs. Users can burn a certain quantity of a specific NFTs to “craft” (mint) a new, more rare version of that NFT. Season 2 introduces four rarity levels, including Common, Silver, Gold, and Trophy.
Users who participated in Season 1 of Zapper Quests will start Season 2 with 100 Volts per level they reached in Season 1. Users can also earn XP and Volts on networks outside of mainnet Ethereum. Season 2 of the program will run until January 1, 2022.
App Store Denies Gnosis Safe Application
Apple has denied Gnosis Safe from listing its Ethereum wallet on the Apple App Store. Lukas Schor, Head of Product at Gnosis, shared his frustration on Twitter, noting Apple blocked a release of the Gnosis Safe mobile app because the wallet displays NFTs.
Schor says that Gnosis submitted a new version of the Gnosis Safe mobile app to the App Store two weeks ago. Apple had then asked Gnosis if users can store NFTs on the wallet. After responding yes to the question, Apple denied the listing request claiming the app allows users to store and send NFTs, adding that the feature is “not appropriate for the App Store” and suggested for Gnosis to remove the NFT feature from the App.
Apple’s policy allows for users to be able to purchase NFTs within the in-app purchase environment in which Apple collects a fee, but does not allow for the storage of NFTs purchased outside of Apple. The Gnosis Safe app update had nothing to do with NFTs as it included a new way to connect a Ledger Nano X via Bluetooth to the app. The Gnosis Safe app has already displayed user-owned NFTs for many months. Schor says Gnosis will submit an appeal to the App Review Board and hope that they will reinterpret their policy when it comes to NFTs.
Coinbase Wallet Adds Layer2 Support
Coinbase Wallet now supports every major layer2 and sidechain scaling network. Users no longer have to manually add networks to the wallet. In the Coinbase Wallet settings page, users can now choose between mainnet Ethereum, Arbitrum, Avalanche, Fantom, Optimism, Polygon, and xDAI.