IMD

Oracle

9b8a28fcsigned

At what Ethereum mainnet block number did the DAO hard fork activate?

Answer

1,920,000

1920000 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
ethereum.org, blog.ethereum.org, eips.ethereum.org, etherscan.io, github.com

Work

  1. pinnedblocks 26,048,865 to 26,049,164 to · on Ethereum mainnet
  2. answered71 of 71 agreed70 needed
    #11131,920,000from ethereum.org
    #8121,920,000from ethereum.org
    #10011,920,000from github.com
    #18601,920,000from etherscan.io
    #1921,920,000from ethereum.org
    66 more
    #19061,920,000from eips.ethereum.org
    #13101,920,000from blog.ethereum.org
    #1311,920,000from ethereum.org
    #2811,920,000from ethereum.org
    #17631,920,000from ethereum.org
    #12191,920,000from eips.ethereum.org
    #16631,920,000from eips.ethereum.org
    #19651,920,000from ethereum.org
    #12711,920,000from ethereum.org
    #14691,920,000from eips.ethereum.org
    #3281,920,000from ethereum.org
    #21,920,000from ethereum.org
    #7861,920,000from ethereum.org
    #2931,920,000from etherscan.io
    #3091,920,000from eips.ethereum.org
    #14131,920,000from blog.ethereum.org
    #4341,920,000from eips.ethereum.org
    #11681,920,000from eips.ethereum.org
    #14271,920,000from ethereum.org
    #7591,920,000from ethereum.org
    #9901,920,000from eips.ethereum.org
    #4431,920,000from ethereum.org
    #8631,920,000from etherscan.io
    #10841,920,000from ethereum.org
    #15301,920,000from ethereum.org
    #991,920,000from eips.ethereum.org
    #8351,920,000from ethereum.org
    #14991,920,000from ethereum.org
    #4701,920,000from ethereum.org
    #5401,920,000from ethereum.org
    #19191,920,000from ethereum.org
    #15141,920,000from ethereum.org
    #14311,920,000from blog.ethereum.org
    #3511,920,000from blog.ethereum.org
    #10811,920,000from eips.ethereum.org
    #4291,920,000from ethereum.org
    #6731,920,000from eips.ethereum.org
    #881,920,000from eips.ethereum.org
    #1531,920,000from ethereum.org
    #19531,920,000from eips.ethereum.org
    #6491,920,000from ethereum.org
    #5451,920,000from ethereum.org
    #18191,920,000from eips.ethereum.org
    #1671,920,000from ethereum.org
    #19791,920,000from etherscan.io
    #1081,920,000from ethereum.org
    #5791,920,000from ethereum.org
    #7051,920,000from eips.ethereum.org
    #7291,920,000from etherscan.io
    #18861,920,000from ethereum.org
    #16421,920,000from ethereum.org
    #5951,920,000from eips.ethereum.org
    #17561,920,000from eips.ethereum.org
    #3121,920,000from blog.ethereum.org
    #2481,920,000from blog.ethereum.org
    #15801,920,000from ethereum.org
    #6061,920,000from blog.ethereum.org
    #15811,920,000from ethereum.org
    #17251,920,000from ethereum.org
    #8291,920,000from eips.ethereum.org
    #15611,920,000from ethereum.org
    #10791,920,000from ethereum.org
    #11751,920,000from ethereum.org
    #8911,920,000from ethereum.org
    #9531,920,000from eips.ethereum.org
    #611,920,000from etherscan.io
  3. signed
    by the attester 0x5598…2982usable until

    Checking the signature in this browser.

    typed data
    the exact bytes a consumer verifies, as JSON
    attester
    0x5598aa9146215bc13eb26f2c692ad1461fd32982
    signature
    0xf9d158257ce678cce4aa02dc7a797850d6b8a420a73b8d12839674ff2a08a7d765750f4157ad562bbfd82eccb66b4cb27663ffd5f57c817a3314cd00e690e6bd1c
    question hash
    0xad62cac83848bf48f3226eff4608365c3e80cf1d4912b91a8218605c1f246e26
    answer type
    uint256
    consumer
    none named; signed for the zero address
  4. scored
    1 batch queuedon Ethereum mainnet
    scores
    written, with no entries recorded on it · block 26,051,968 · transaction