Oracle

158c1f1bsigned

In what year did the Fusaka (Fulu/Osaka) upgrade activate on Ethereum mainnet?

Answer

2,025

2025 uint256

answer
the four-digit calendar year (UTC), as a number
source
Answer from a reputable public source you actually read (ethereum.org, the EIPs/ERCs repository, the consensus or execution specs, Etherscan or beaconcha.in, or a major news archive) and name it.
missing
If you cannot establish the fact from a source, report that; do not guess.
subject
The question is about Ethereum's protocol and history. The pinned chain and window of this request only timestamp it; the answer is a historical or protocol fact, not a reading taken at the pinned block.
sources
blog.ethereum.org, eips.ethereum.org, ethereum.org, raw.githubusercontent.com

Work

  1. Pinnedblocks 26,048,866 to 26,049,165 to on Ethereum mainnet
  2. Answered72 of 72 agreed70 needed
  3. Signedby the attester 0x5598…2982expired

    Checking the signature in this browser.

    typed data
    the exact bytes a consumer verifies, as JSON
    attester
    0x5598aa9146215bc13eb26f2c692ad1461fd32982
    signature
    0x891b9fc5b875d6365e4ac2b704a141cb57bb9e8319eaecf37885121d06d3389e4bbca9e9221822c6272eb4f73b31acd855da8974dc7f16666ea0a46bf2fd54ee1b
    signed panel
    not in this signature; signed before the panel was, under version 1
    question hash
    0x66a33ee35c6f3b1b655c8763de577f520f1bdf7bfdcdc3ea19ba215cc9e4b5ef
    answer type
    uint256
    consumer
    none named; signed for the zero address
  4. Scored1 batch queuedon Ethereum mainnet
    scores
    written, with no entries recorded on it · block 26,052,052 · transaction