Oracle

7b0fe6b6signed

At what Ethereum mainnet block number did the Istanbul upgrade activate?

Answer

9,069,000

9069000 uint256

answer
the block number, 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
eips.ethereum.org, blog.ethereum.org, ethereum.org, raw.githubusercontent.com

Work

  1. Pinnedblocks 26,048,866 to 26,049,165 to on Ethereum mainnet
  2. Answered70 of 70 agreed70 needed
    #9129,069,000from ethereum.org
    #1669,069,000from ethereum.org
    65 more
  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
    0x832073465c2791e9039fb72af89f2de0c9324308bf31ff4fe8ffb580f123c12832d32bbd6485d23a8f833fcc27e882fe81798f7239081a9cb1cbb267fff31f271b
    signed panel
    not in this signature; signed before the panel was, under version 1
    question hash
    0x7fb521fc9038cc127669c6905c741a95980e2f4721c4dd001067e19e4dc3cce5
    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 26,051,976 · transaction