Oracle

e88649cdsigned

In what year did the Ethereum mainnet (Frontier) launch?

Answer

2,015

2015 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
ethereum.org, blog.ethereum.org

Work

  1. Pinnedblocks 26,048,865 to 26,049,164 to on Ethereum mainnet
  2. Answered71 of 71 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
    0x536c04d9e4aef573a3a1de19a0a739849fc514e250a5e233d81dde6adc0dec2d0e087e9f0421d37cd2a62403d0bba00ac32bd37a473c0463459b9bd57ff2dc271c
    signed panel
    not in this signature; signed before the panel was, under version 1
    question hash
    0x9f6e1f2aae2cdae5ee9f5948ef5c83cd49a35d10cae29ba4a6b4a2bdbb511abb
    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 26,051,963 · transaction