Ethereum Co-Founder Vitalik Buterin Introduces Fusaka: Ethereum’s Most Ambitious Scaling Solution Yet

Ethereum co-founder Vitalik Buterin has unveiled Fusaka as the network’s most ambitious scaling upgrade, set to activate on December 3 with revolutionary technology that eliminates the need for any single computer to download complete blockchain ￰1￱ upgrade introduces PeerDAS, allowing validator nodes to verify information by checking small random pieces rather than entire data ￰2￱ described the technology as “ unprecedented ” for live blockchains, as it enables massive scalability improvements while maintaining ￰3￱ network participant downloads only small “chunks” to probabilistically verify that sufficient data exists for complete reconstruction when ￰4￱ upgrade addresses mounting pressure on Ethereum’s base layer amid criticism that Layer 2 solutions create fragmented user experiences.) September 24, 2025 Notably, Buterin emphasized the cautious testing approach core developers have adopted despite years of development ￰5￱ conservative blob count initially increases and will become more aggressive as real-world performance validates the technology’s stability and ￰6￱ Battles Revenue Crisis With Infrastructure Focus The Fusaka upgrade addresses Ethereum’s growing economic challenges as Layer 2 networks reduce mainnet transaction ￰7￱ revenue of $14.1 million marked one of the weakest months since early 2021, which has raised concerns about ￰8￱ this, Buterin recently proposed low-risk DeFi protocols as Ethereum’s potential revenue anchor , comparing the model to Google Search funding broader company ￰9￱ suggested protocols offering 5% yields on blue-chip stablecoins could provide economic stability without compromising ethical ￰10￱ protocols include mainstream lending platforms like Aave, where users can earn stable returns by supplying USDT and USDC to borrowers without speculative ￰11￱ co-founder @VitalikButerin believes the network’s long-term sustainability may depend on an unlikely hero — low-risk DeFi protocols. #Ethereum #Buterin ￰0￱ — ￰12￱ (@cryptonews) September 21, 2025 Fusaka’s infrastructure improvements will reduce transaction costs for such applications, making them accessible to everyday users who previously faced prohibitive gas fees when interacting with DeFi ￰13￱ upgrade includes 11-12 Ethereum Improvement Proposals targeting scalability and node efficiency ￰14￱ parameter-only forks will activate automatically based on predetermined schedules rather than requiring separate network upgrades.

Additionally, recent controversies in the validator queue also add to the ongoing scalability pressures. However, Buterin defended the current 43-day exit delays as essential security features, comparing validator commitments to military service, which requires “friction in quitting.” The upgrade follows May’s successful Pectra implementation , which introduced account abstraction and increased validator staking limits from 32 ETH to 2,048 ￰15￱ upgrade delivered infrastructure improvements for social recovery wallets and smart contract execution ￰16￱ Fusaka, the improvements in data availability will support the next growth phase of Ethereum, while maintaining the security guarantees that distinguish Ethereum from its competitors.