Fusaka Activated: Ethereum Ushers in a New Era of High-Speed, Low-Cost Transactions

Ethereum's network just got a major upgrade. The long-anticipated Fusaka activation is live, fundamentally reshaping how the world's largest smart contract platform operates.

From Congestion to Hyperdrive

Gone are the days of crippling gas fees and network gridlock during peak demand. Fusaka introduces a novel transaction processing mechanism that bypasses previous bottlenecks, slashing confirmation times and operational costs for developers and users alike. This isn't a minor tweak—it's a core architectural shift.

The Scalability Promise, Realized

The upgrade directly tackles Ethereum's perennial challenge: scalability. By implementing parallel execution and optimized data handling, Fusaka dramatically increases the network's throughput. More transactions get processed per second without compromising on decentralization or security—the holy trinity of blockchain design finally within closer reach.

A Ripple Across DeFi and Beyond

Expect immediate tremors across decentralized finance. Complex trading strategies, once prohibitively expensive, become viable. NFT marketplaces can handle volume surges without freezing. Real-world asset tokenization moves from pilot to production. The entire ecosystem gets a shot of adrenaline, potentially unlocking the next wave of mainstream dApp adoption. (TradFi banks, meanwhile, are likely recalculating their multi-year, multi-million-dollar legacy system upgrade budgets and feeling a pang of existential dread.)

The New Era is Here

Fusaka's activation marks a definitive line in the sand. Ethereum isn't just iterating; it's evolving. The network is now positioned not merely as a settlement layer, but as a robust, scalable global computer ready for its next chapter. The race for blockchain supremacy just entered a new, faster lane.

In brief

• Fusaka is now active on Ethereum as of December 3, successfully deployed to multiply rollups capacity by 8 and reduce transaction costs.
• Fusaka improvements include PeerDAS, an increased gas limit, and passkey signatures, optimizing scalability and user experience.
• Ethereum Fusaka could strengthen ETH adoption and influence its price, with expected impacts on Layer 2 and the crypto ecosystem.

Ethereum Fusaka is finally here: a look back at a historic day 

The Fusaka update was successfully deployed on December 3, 2025, at 21:49 UTC, marking a turning point for Ethereum. After months of testing and anticipation, the crypto community followed its activation live on social media and via a YouTube live organized by Vitalik Buterin’s teams. Unlike some past updates, Fusaka was deployed in just 15 minutes, without major network interruption, demonstrating the ecosystem’s growing maturity.

This update bears a symbolic name, Fusaka, merging Fulu (consensus layer) and Osaka (execution layer), in tribute to the Devcon 2025 held in Japan. Developers emphasized the importance of this stage, which fits into Ethereum’s long-term roadmap. Validators, prepared for weeks, quickly adopted the new parameters, confirming the protocol’s robustness. For many, this smooth activation reflects the progress made since the switch to proof of stake (PoS) in 2022.

Fusaka: improvements available after the Ethereum update

The Ethereum Fusaka update introduces major changes, starting with PeerDAS (Peer Data Availability Sampling)! A technology that allows validators to verify data by sampling small fragments rather than entire blocks. The result: the processing capacity of rollups (Layer 2) is multiplied by 8, while storage costs are reduced by 80%. A crucial advance for solutions like Arbitrum or Optimism, which depend on Ethereum’s efficiency.

The gas limit per block was also raised to 60 million, improving LAYER 1 throughput and reducing fees for end-users. Another novelty: the integration of passkey signatures, like Face ID or Touch ID, simplifying access to decentralized applications. Ethereum, however, invited the community to monitor the network for 24 hours to detect any anomalies, reflecting a cautious but confident approach.

These concrete improvements meet the expectations of users, tired of high fees and limited scalability.

Is ETH ready to explode? 

The burning question on investors’ lips: can Fusaka propel ETH’s price to new heights? In the short term, major updates are often followed by a “buy the rumor, sell the news” effect, but analysts remain optimistic for 2026. Fee reduction and throughput increase could attract more users and institutional investors, supporting increased demand.

Some experts predict a return to $3,500 or more if adoption follows. Rollups, now more efficient, should benefit from an influx of DeFi, NFT, and blockchain gaming projects, strengthening Ethereum’s utility. Facing competitors, this update also confirms Ethereum’s ability to innovate without sacrificing decentralization. A strong argument for long-term investors.

Fusaka marks a turning point for Ethereum, combining technical innovations and long-term vision. As the community watches the first effects, one question remains: will this update be enough to sustainably reinvigorate ETH? Between technological Optimism and financial caution… Do you think Fusaka will change the game for crypto?

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