ChainCatcher message, Ethereum's Pectra upgrade on the Sepolia testnet is facing interruptions, as an unknown attacker exploited the zero-token transfer situation, resulting in the mining of empty blocks.

ChainCatcher message, the Ethereum Foundation published an article on its official blog stating that the Pectra network upgrade was previously launched on the Sepolia testnet, but it was later discovered that there was an issue with the Sepolia permissioned deposit contract, which caused many execution layer clients to be unable to include transactions in blocks. The cause of the problem was quickly identified, and the client teams immediately began working on a fix. This issue is specific to the configuration of the Sepolia testnet and cannot occur on the Ethereum mainnet. Validators have now deployed a patch to restore the network to normal throughput. All Sepolia node operators must now upgrade their execution layer clients to maintain network compatibility.

ChainCatcher news, Ethereum core developer timbeiko.eth stated regarding the Sepolia testnet upgrade issue: "The client teams have coordinated to fix the issue and are attempting to deploy it to the validating nodes. If everything goes well, we will release a longer update soon."Previous news, the Ethereum Sepolia testnet Pectra upgrade encountered issues, and developers are investigating.

ChainCatcher news, Ethereum Foundation (EF) protocol support lead Tim Beiko updated on X: "Well, it seems I spoke too soon... We are investigating issues caused by the custom deposit contract on Sepolia. This has led to problems with some execution layer (EL) clients, including transactions in blocks."Previous news, the Pectra upgrade has been activated on the Sepolia testnet and is entering the final testing phase.

ChainCatcher news, the upcoming Pectra upgrade for Ethereum was activated on the Sepolia testnet around 14:30 Beijing time today.It is reported that the Sepolia version is the last major release before the mainnet upgrade launch, which is expected to start next month. This deployment marks the second phase of the Pectra testnet activation, following Pectra's launch on the Holesky testnet on February 24.The Pectra upgrade is named a combination of "Prague" (execution layer changes) and "Electra" (consensus layer updates), introducing several changes aimed at improving Ethereum's scalability. If performance is good, developers expect to determine the mainnet activation date during the All Core Developers (ACD) call on March 6, 2025. The potential launch time for the mainnet is set for early April.

ChainCatcher message, Ethereum Foundation protocol support lead Tim Beiko updated on X about the issues with the Holesky testnet Pectra upgrade.Beiko stated that a large-scale slash will be executed on the Holesky testnet tonight to finalize the blocks on the correct chain, which may last for 2 to 3 weeks until the weight of the slashed validators drops below 33% of the entire network.Beiko also mentioned that the upgrade schedule for the Sepolia testnet will not change, in order to provide a longer testing period for the mainnet upgrade. Issues related to the mainnet upgrade will be discussed at next week's ACDC meeting, but it is unlikely that a specific date will be determined.

ChainCatcher message, the Ethereum Foundation's official blog announced that the Pectra network upgrade plan will launch on the Ethereum testnet. It will go live on Holesky at epoch 115968 (Beijing time February 25, 05:55), and then on Sepolia at epoch 222464 (Beijing time March 5, 15:29).The Pectra testnet client versions are listed below. After both testnets successfully upgrade, one mainnet activation epoch will be selected. Pectra follows last year's Dencun upgrade. It introduces enhanced Ethereum accounts, improved validator experience, support for L2 scaling, and more features.

ChainCatcher news, the Kakarot team of the Ethereum Layer 2 network recently announced that its testnet has successfully migrated to the Starknet Sepolia network. Developers need to redeploy smart contracts on the new testnet Kakarot Starknet Sepolia.Kakarot is a verifiable EVM built on a STARK-friendly ZK-VM based on Starkware, developed by KKRT Labs, aimed at accelerating the application of zero-knowledge proof technology in blockchain infrastructures like Ethereum through the "STARKification" of the EVM.

ChainCatcher news, according to the Base official website, the fault proof is expected to be launched in mid-July on Base Sepolia (testnet). The fault proof is a crucial implementation step in the process of L2 moving towards decentralization.

ChainCatcher message, Scroll announced on social media that its Curie network upgrade is now live on the Sepolia network.It is reported that the improvements introduced by Curie include: a 1.5 times reduction in Gas costs due to DA compression, comprehensive support for the Ethereum EIP-1559 fee mechanism, and the Curie network will subsequently upgrade on the Scroll mainnet.

ChainCatcher message, Scroll posted on X platform that it is currently upgrading the Sepolia testnet, and the testnet may not be available until June 17 at 12:00 UTC. The latest updates will be notified after the upgrade is completed.

ChainCatcher news, the modular execution layer Fuel announced on social media that it has launched the final testnet on the Sepolia network.

ChainCatcher message, Base reminds Sepolia testnet node operators on social platforms that the network will undergo the Fjord upgrade at 00:00 Beijing time on May 30. Please ensure that you are running a compatible software version.

ChainCatcher news, the zkEVM network Kakarot built on the Cairo language announced on social media that it has launched the Kakarot Sepolia testnet and has opened the public whitelist testnet phase.It is reported that this is the first testnet phase of Kakarot.

ChainCatcher news, zkSync Developers posted on social media that the zkSync Era Sepolia testnet is expected to fully recover in the next few hours. The v24 mainnet upgrade will be postponed until later next week to give the team more time to assess the stability of the testnet. A precise release date will be provided when the team is confident in its stability.zkSync Developers stated that there were two issues affecting the testnet (which have now been resolved): First, due to instability in the eth_sender service (responsible for submitting transactions to the L1 zkSync smart contract), there were no L1 submission blocks for about 1 day. This was caused by the gas market on Sepolia being very different due to Blob pricing. Second, there were no proofs submitted for more than two days, leading to withdrawal delays. This was caused by logical differences between the VM inside the circuit (used for generating proofs) and the VM outside the circuit (server-side VM that executes immediately when submitting transactions).

ChainCatcher message, zkSync Developers posted on X platform last night stating that the team is investigating a persistent issue on the zkSync Sepolia testnet. During the ongoing investigation, withdrawing Sepolia funds from the zkSync Era Sepolia testnet is unavailable. This investigation (and its results) may affect the mainnet v24 release scheduled for next Monday.At around 3 AM today, zkSync Developers released an update stating that the investigation is still ongoing and will continue until tomorrow, when more updates will be provided.

ChainCatcher message, meson.network posted on platform X that the Sepolia testnet snapshot will be completed today, and the entire testnet to 1% mainnet mapping is scheduled for May 7, 2024, at 14:00.

ChainCatcher news, according to The Block, OP Labs announced that it has launched Fault Proof on the OP Sepolia testnet, stating: "The open-source, fully functional Fault Proof is now live on OP Sepolia. Through permissionless validation, anyone can participate in the system without an allowlist."It is reported that Fault Proof serves as a security mechanism for Ethereum L2 networks, allowing users to challenge potentially fraudulent or incorrect transactions. They are crucial for ensuring that off-chain transaction processing is not manipulated.

ChainCatcher message, Starknet posted on the X platform that the Starknet Goerli testnet will be deprecated on April 11, and users are advised to migrate to Sepolia as soon as possible.