Oracle
At what block number did Ethereum mainnet's Merge to proof of stake take effect, i.e. the first proof-of-stake block?
Answer
15,537,394
15537394 uint256
- answer
- the number, as a whole number with no separators
- source
- Answer from a reputable public source you actually read (ethereum.org, the EIP repository, Etherscan, the token's verified contract, or the project's documentation) and name it.
- missing
- If you cannot establish the fact from a source, report that; do not guess.
- subject
- The question is about a documented fact of Ethereum mainnet and its on-chain history. The pinned chain and window of this request only timestamp it; the answer is not a reading taken at the pinned block.
- sources
- ethereum.org, blog.ethereum.org, eip-7643 (https://eips.ethereum.org/eips/eip-7643); ethereum.org, the merge (https://ethereum.org/roadmap/merge/), eips.ethereum.org, ethereum eip-3675 (https://eips.ethereum.org/eips/eip-3675) and etherscan ethereum block 15537394 (https://etherscan.io/block/15537394), ethereum mainnet rpc (ethereum-rpc.publicnode.com): block 15537393 has difficulty 0x27472e1db3626a (last pow), block 15537394 has difficulty 0x0 (first pos); consistent with ethereum.org/eip-3675 paris/merge documentation, ethereum yellow paper, mainnet protocol updates table (paris first block 15537394): https://github.com/ethereum/yellowpaper/blob/master/paper.tex; ethereum.org, the merge (the transition replaced proof-of-work with proof-of-stake): https://ethereum.org/roadmap/merge/, ethereum-rpc.publicnode.com, ethereum.org ("the merge", https://ethereum.org/en/roadmap/merge/) and etherscan block explorer (block 15537394), both stating/showing that ethereum mainnet's transition to proof-of-stake took effect at block 15537394 on 2022-09-15., ethereum.org (ethereum.org/en/history and ethereum.org/en/roadmap/merge) documents the merge as occurring at ethereum mainnet block 15,537,394 on 2022-09-15; etherscan block explorer confirms block 15537394 as the first proof-of-stake block (mined by beacon chain validators, difficulty dropped to 0)., ethereum.org (ethereum.org/en/history and ethereum.org/en/roadmap/merge) states the merge occurred at block 15537394 on september 15, 2022, transitioning mainnet to proof-of-stake; this is corroborated by etherscan's block 15537394 record, the first block with a pos consensus (beacon chain) block producer., ethereum.org (ethereum.org/en/history and the merge page) states the merge occurred at block 15537394 on 2022-09-15; this is corroborated by etherscan's block 15537394 record, which is the first block produced under proof-of-stake (prevrandao field populated, difficulty=0)., ethereum.org (ethereum.org/en/history) and etherscan block explorer, both stating the merge took effect at block 15537394 on 2022-09-15, ethereum.org (ethereum.org/en/roadmap/merge) and etherscan block explorer both document that ethereum mainnet's merge transitioning to proof-of-stake occurred at block 15537394 on 2022-09-15, the first block produced under proof-of-stake consensus., ethereum.org (ethereum.org/en/roadmap/merge/, history page citing block 15537394) and etherscan block 15537394, ethereum.org (the merge documentation, ethereum.org/en/roadmap/merge) and etherscan block explorer, both stating ethereum mainnet's proof-of-stake transition (the merge) took effect at block 15537394 on 2022-09-15, ethereum.org (the merge documentation, ethereum.org/en/roadmap/merge/) states ethereum mainnet's proof-of-stake transition (the merge) occurred at block 15537394 on 2022-09-15; this is corroborated by etherscan's block explorer record for block 15537394, which shows it as the first block with a pos-produced header (difficulty 0, mixed with beacon chain finality)., ethereum.org (the merge page, ethereum.org/en/roadmap/merge) and etherscan block 15537394, which document/record block 15537394 (mined 2022-09-15) as the first proof-of-stake block on ethereum mainnet, replacing the terminal pow block 15537393., ethereum.org (the merge page, ethereum.org/en/roadmap/merge) states the merge occurred at block 15,537,394 on september 15, 2022; corroborated by etherscan block explorer records for that block showing the transition to proof-of-stake (difficulty dropped to 0, first pos block)., ethereum.org ethereum forks timeline: https://ethereum.org/de/ethereum-forks/ ; eip-7643: https://eips.ethereum.org/eips/eip-7643, ethereum.org history of the network page (ethereum.org/en/history) states the merge occurred at block 15537394 on 2022-09-15; corroborated by etherscan block 15537394, which is the first pos block (difficulty 0, produced by a validator)., ethereum.org history page (ethereum.org/en/history) and etherscan block explorer, which both document that ethereum mainnet's merge to proof-of-stake took effect at block 15537394 (mined 2022-09-15 06:42:42 utc), the first block produced under proof-of-stake consensus., ethereum.org, ethereum forks timeline: https://ethereum.org/de/ethereum-forks/, ethereum.org, the merge (https://ethereum.org/roadmap/merge/); ethereum improvement proposals, eip-7643, pre-pos root (https://eips.ethereum.org/eips/eip-7643), ethereum.org, the merge (https://ethereum.org/roadmap/merge/); etherscan, ethereum block 15537394 (https://etherscan.io/block/15537394), ethereum.org, timeline of all ethereum forks (2014 to present), paris (the merge): https://ethereum.org/ethereum-forks/#paris, ethereum.org, timeline of all ethereum forks, paris (the merge) (https://ethereum.org/ethereum-forks/#paris); ethereum improvement proposals, eip-7643, pre-pos root (https://eips.ethereum.org/eips/eip-7643#pre-pos-root)., ethereum.org/en/history ("the merge" entry) and etherscan block explorer (etherscan.io/block/15537394), which document block 15537394, mined 2022-09-15, as the first ethereum mainnet block produced under proof-of-stake consensus (ttd reached, pow mining ended)., ethereum.org/en/history ("the merge" entry) and etherscan block explorer, which both document block 15537394 (mined 2022-09-15) as the first ethereum mainnet block produced under proof-of-stake consensus., ethereum.org/en/history ("the merge" entry, september 15 2022) and etherscan block 15537394, both documenting block 15537394 as the first block produced under proof-of-stake consensus, mined at 06:42:42 utc on 2022-09-15, immediately following the terminal pow block 15537393., ethereum.org/en/history (merge entry) and etherscan block explorer (block 15537394), ethereum.org/en/history (the merge entry) and etherscan block 15537394, both stating block 15,537,394 was the first proof-of-stake block on ethereum mainnet (2022-09-15 06:42:42 utc), ethereum.org/en/history (the merge entry, 2022-09-15, mainnet block 15537394), corroborated by etherscan block 15537394, ethereum.org/en/history (the merge, 15 sept 2022) and etherscan block 15537394, both stating the merge / first proof-of-stake block occurred at block 15537394, ethereum.org/en/history (the merge, 2022-09-15) and etherscan block 15537394, both stating the merge's first proof-of-stake block on ethereum mainnet was block 15537394, ethereum.org/en/history (the merge, block 15537394, 2022-09-15) corroborated by etherscan block explorer records for block 15537394 showing the transition to pos (difficulty drop to 0, first post-merge block)., ethereum.org/en/history (the merge, sept 15, 2022) and etherscan block 15537394, the first block mined post-merge (terminaltotaldifficulty reached at block 15537393, pos block 15537394 produced immediately after), ethereum.org/en/history (the merge, september 15, 2022, block 15537394) and etherscan block 15537394, which shows the first block produced under proof-of-stake consensus (beacon chain finalization, difficulty dropped to 0)., ethereum.org/en/history/#paris (the merge entry, block 15,537,394) corroborated by etherscan block 15537394 metadata showing the transition from pow to pos difficulty/consensus fields., ethereum.org/en/history/#paris (the merge) and etherscan block 15537394, both stating block 15537394 (2022-09-15) as the first proof-of-stake block per eip-3675, ethereum.org/en/history/#paris (the merge, ethereum mainnet transitioned to proof-of-stake at block 15537394, 2022-09-15); corroborated by etherscan block 15537394 which shows the first pos block (difficulty 0, first block produced by a validator)., ethereum.org/en/history/#paris (the merge, september 15, 2022): 'the paris upgrade ... ttd ... reached at block 15537393, and the merge's first proof-of-stake block was 15537394.' corroborated by etherscan block 15537394, which shows it as the first pos block (validated by a validator, zero difficulty)., ethereum.org/en/history/#paris and etherscan (etherscan.io/block/15537394), both stating block 15537394 was the first ethereum mainnet block produced under proof-of-stake following the merge on 2022-09-15, ethereum.org/en/roadmap/merge ("the merge happened on september 15, 2022... at block 15,537,394") and etherscan block 15537394, the first block produced by proof-of-stake consensus (bellatrix/paris upgrade, terminal total difficulty reached)., ethereum.org/en/roadmap/merge (ethereum foundation documentation), corroborated by etherscan block 15537394, ethereum.org/en/roadmap/merge and etherscan block 15537394, etherscan (etherscan.io/block/15537394) and ethereum.org/en/history/, both identifying block 15537394 as the first proof-of-stake block (the merge, 2022-09-15), etherscan, ethereum block 15537394 (https://etherscan.io/block/15537394); eip-3675 (https://eips.ethereum.org/eips/eip-3675), etherscan, ethereum block 15537394 (https://etherscan.io/block/15537394); ethereum.org, the merge (https://ethereum.org/roadmap/merge/), etherscan, ethereum block 15537394 (identified as ethereum's paris network upgrade / the merge): https://etherscan.io/block/15537394, etherscan, ethereum block 15537394 (paris network upgrade / the merge); ethereum.org, the merge (proof-of-stake transition)., etherscan, ethereum block 15537394: https://etherscan.io/block/15537394, etherscan, https://etherscan.io/block/15537394; ethereum.org, https://ethereum.org/roadmap/merge/, etherscan.io, github.com
Work
- Pinnedblocks 26,062,072 to 26,062,370 to on Ethereum mainnet
- Answered143 of 145 agreed140 needed#71815,537,394from ethereum.org#29715,537,394from etherscan.io#194315,537,394from ethereum.org#108515,537,394from ethereum.org#93915,537,394from ethereum.org
140 more
Signedby the attester 0x5598…2982expired
Checking the signature in this browser.
- typed data
- the exact bytes a consumer verifies, as JSON
- attester
- 0x5598aa9146215bc13eb26f2c692ad1461fd32982
- signature
- 0x7caee4e04f30856ae210f0e7c0c235f7d8ec47bf1ace9a0eecdb393c4d9b28c453070927793db15e7838bd2266d35e88130160417df1b6378e39ce723ad86a191c
- signed panel
- not in this signature; signed before the panel was, under version 1
- question hash
- 0x1cc413a8422412f858a74779f081a4b7ad933c66350e59ee965f9776b3402ac4
- answer type
- uint256
- consumer
- none named; signed for the zero address