On January 27, the blockchain research organization MigaLabs disclosed an analysis showing that after Ethereum completes the Fusaka upgrade in December 2025, it has experienced significant pressure when processing data-intensive blocks. This raises questions about whether it can support larger-scale Layer 2 data throughput. The core goal of the Fusaka hard fork is to allow Layer 2 networks to submit more blob data to the mainnet, thereby reducing Rollup costs and increasing scalability. However, the actual operation has not fully met expectations. Based on data from over 750,000 block slots since October 2025, MigaLabs found that although the official target number of blobs per block has gradually increased to 14, the median number of blobs in the network has actually decreased. Blocks containing 16 or more blobs are extremely rare, occurring only a few hundred times, indicating that the expanded capacity has not been fully utilized.

January 27 News, Ethereum has new technical concerns after the Fusaka upgrade. Research organization MigaLabs released a report stating that as the number of blob data packets submitted by Layer2 networks to the Ethereum mainnet increases, the network becomes more prone to failures or discards when processing high data volume blocks, indicating that the current Ethereum is not yet fully adapted to higher-scale data throughput demands. The Fusaka upgrade was deployed in December 2025, with the core goal of providing higher data channels for Layer2 scaling. Before the upgrade, each block could carry a maximum of 9 blobs, and the upgrade roadmap allows capacity to eventually increase by up to 8 times. Ethereum Foundation executive Alex Stokes also admitted at the time that this is a very new technology, and the network's performance under extreme conditions remains uncertain.

Ethereum network recently received an important upgrade. On Wednesday, Ethereum completed its second hard fork that only adjusts the Blob parameters (BPO), officially increasing the maximum number of Blobs per block from 15 to 21, seen as a key first step in Ethereum's 2026 scalability roadmap. This upgrade directly enhances the data throughput capacity of the Ethereum Rollup system, laying the foundation for Layer 2 scaling. The BPO hard fork took effect at 1:01:11 UTC. The core change not only involves increasing the Blob limit but also raising the Blob target count from 10 to 14. Industry experts generally believe that the target number is more practically meaningful than the theoretical limit, because if the limit of 21 Blobs is approached long-term, it could put pressure on node bandwidth and storage capacity.

Ethereum Foundation Research Co-Lead Alex Stokes tweeted that the Ethereum Blob pressure optimization scheme BPO2 upgrade has officially taken effect on the mainnet. According to real-time on-chain data, the target value for Blob has been increased to 14 per block, and the maximum capacity has been increased to 21.

Vitalik Buterin stated on the X platform that Ethereum plans to increase the Gas limit and Blob count in 2025, improve the quality of node software, and achieve a zkEVM performance milestone, moving towards building a robust decentralized application ecosystem.

Odaily Planet Daily News: After the next Blob parameter hard fork, developers are considering increasing Ethereum's Gas limit to 80M. Ethereum is expected to achieve faster transaction speeds by January next year. (Cointelegraph)

BlockBeats News, December 12 – Liquid Capital (formerly LD Capital) founder Yilihua posted on social media, expressing continued strong optimism for Ethereum. The reasons are as follows: First, the Wall Street consensus is strengthening: the SEC Chair's latest statement that "financial migration to the chain" is underway, with U.S. political and economic elites working together to promote the tokenization of U.S. debt, with Ethereum as the core platform. Second, Fusaka's upgrade reshapes value: Blob fees have surged dramatically, with over 1500 tokens burned in a single day.

Foresight News reported that the Ethereum Foundation tweeted that BPO-1 has been activated, increasing the blob capacity of each block to 15 and adding L2 space without a hard fork. BPO-2 is scheduled to launch in January , further increasing capacity at that time.

Tom Wan, Head of Data at Entropy Advisors, stated that after the Fusaka upgrade, Blob Gas prices surged significantly, but the base fee remains as low as around $0.03. At the same time, the predictability and stability of Blob prices have been enhanced, which benefits L2 projects and institutional cost estimation.