Unchained

Cheaper Fees and No More Free Lunch for Layer 2s? Inside Ethereum's Fusaka Upgrade - Ep. 966

24 snips
Dec 3, 2025
Guest
Preston Van Loon
Preston Van Loon, an Ethereum core developer and Prysm client maintainer, shares insights about the newly launched Fusaka upgrade. He reveals how this upgrade will lower transaction costs and enhance user experience, particularly for layer 2 operators. Preston discusses the swift deployment timeline, his confidence compared to previous upgrades, and introduces the innovative blob scaling system. He also addresses economic shifts for layer 2s, emphasizing a move away from free services. Expect exciting advancements as Ethereum evolves!
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INSIGHT

Erasure Coding Scales Blob Storage

  • PeerDAS uses erasure coding so nodes store subsets of blob data instead of everything.
  • This lets Ethereum scale its data layer without imposing large hardware requirements on home stakers.
INSIGHT

Ramp Up Blob Capacity Gradually

  • Fusaka enables incremental increases in blob capacity via parameter-only forks.
  • This gradual ramp reduces shock to node operators and the fee market.
ADVICE

Enable Passkey-Based Signing

  • Use the phone's secure enclave and passkeys now that the curve is compiled into the client.
  • Enable biometric-backed signing to give users a hardware-wallet-like experience on mobile.
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