Ethereum’s latest hard fork, the Fusaka upgrade, activated successfully on the mainnet yesterday at block height 18,200,000 around 21:50 UTC on December 3, 2025.
This marks the network’s second major upgrade in 2025, following the Pectra fork in May, and kicks off Ethereum’s new biannual hard fork cadence—aiming for releases every six months to accelerate development without compromising stability.
Named after a blend of “Fulu” (consensus layer, after a star) and “Osaka” (execution layer, nodding to Devcon 2025’s host city), Fusaka focuses on backend enhancements to supercharge scalability, efficiency, and decentralization.
Register for Tekedia Mini-MBA edition 19 (Feb 9 – May 2, 2026): big discounts for early bird.
Tekedia AI in Business Masterclass opens registrations.
Join Tekedia Capital Syndicate and co-invest in great global startups.
Register for Tekedia AI Lab: From Technical Design to Deployment (next edition begins Jan 24 2026).
This is the star of the show. It allows nodes to sample and verify only portions of large data blobs used by Layer 2 rollups like Arbitrum and Optimist instead of downloading everything.
Dramatically reduced node storage and bandwidth needs, enabling Ethereum to handle way more data—paving the way for 100,000+ TPS in the future. It’s a crucial step toward “sharding” without full sharding, as Vitalik Buterin noted.
Since the Dencun upgrade in 2024, blob base fees were stuck near zero (1 wei), creating an unsustainable subsidy for L2s. Fusaka introduces a minimum base fee to stabilize costs and prevent spikes during high gas periods.
The gas limit doubles to 60 million per block, adding more “highway lanes” for transactions and easing congestion. L2 fees could drop another 10x, making DeFi, NFTs, and dApps even cheaper.
Security and UX Tweaks: Adds native support for secp256r1 precompiles for better Web2 wallet compatibility, plus BLS12-377 curves for smoother zero-knowledge proofs. It also includes passkey support for easier mobile sign-ins and minor EVM optimizations like enhanced object formats for cheaper, safer smart contracts.
The upgrade rolled out smoothly across testnets (Holesky, Sepolia, Hoodi) and clients, with only a minor hiccup on Prysm quickly resolved by the multi-client architecture—proof that Ethereum’s decentralization holds up.
No disruptions to dApps or users reported. ETH surged ~6-8% post-activation, breaking $3,200 for the first time in weeks and reclaiming the key $3,000 support level amid broader market recovery. Volume spiked, with analysts calling it a “supply crunch” catalyst due to increased L2 activity and ETH burns from stable fees.
Experts like Alchemy’s CTO Guillaume Poncin say it “alters rollup economics” and strengthens Ethereum as the settlement layer. Long-term, it boosts institutional appeal—ETH ETFs saw fresh inflows, and it’s a green light for 2026’s Glamsterdam fork targeting 6-second blocks.
Traders are eyeing parabolic runs like past upgrades, and devs highlight how it unlocks ZK-provable giga-gas blocks. Fusaka’s blob targets ramp up to 10 on Dec 9 and 14 on Jan 7 for even more capacity.
Predict.fun Launches on BNB Chain
Hot on Ethereum’s heels, BNB Chain welcomed Predict.fun today—a fresh on-chain prediction market that’s already turning heads, thanks to a shoutout from Binance founder CZ Changpeng Zhao.
Built by a former Binance researcher and incubated/invested by CZ’s YZi Labs, it launched with a killer hook: Your staked funds earn yield while your predictions are open, ditching the “idle capital” trap that plagues rivals like Polymarket or Kalshi.
CZ’s X post welcomed it as a BNB-native play, with a cheeky disclaimer: ” Not an endorsement, but the founder’s ex-Binance… and it generates yield.” Bet on crypto events, sports, politics, or pop culture by buying/selling outcome shares prices fluctuate with crowd wisdom.
Unlike traditional markets, your locked BNB/USDT doesn’t rot—it auto-stakes for passive income via DeFi protocols. Think Polymarket meets yield farming, all fully on-chain for transparency.
Over 12,000 users, ~300,000 bets placed, and $300K in volume across two active markets so far. It’s small fry next to Polymarket’s $3B+ or Kalshi’s $587M, but BNB Chain’s ecosystem gives it legs—leading all chains in active wallets nearly doubled YoY and snagging 25% of on-chain tx volume.
Yield solves the “capital inefficiency” gripe—users hate tying up funds for weeks without returns. It taps BNB’s fast, cheap infra for seamless mobile UX they ran a “Skip the Queue” beta for early adopters. Limited stablecoin liquidity on BNB could cap growth, but analysts bet on quick scaling via user incentives and ecosystem integrations.
Degens are calling it a “DeFi twist on Polymarket,” with rotations into BNB pairs on exchanges like BingX. As prediction markets boom fueled by U.S. regulatory scrutiny on Kalshi and Fanatics’ Crypto.com tie-up, Predict.fun positions BNB as a hub for real-world utility.