IMD

Oracle

5283c1d3signed

In what year was the Bitcoin genesis block mined?

Answer

2,009

2009 uint256

answer
the four-digit calendar year, as a number
source
Answer from a reputable public source you actually read (Britannica, an official government, agency or company site, or a major reference work) 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 history, science, civics or technology. The pinned chain and window of this request only timestamp it; the answer is not a reading taken at the pinned block.
sources
, bitcoin core, src/kernel/chainparams.cpp (mainnet genesis block definition): https://github.com/bitcoin/bitcoin/blob/master/src/kernel/chainparams.cpp, bitcoin developer reference, block chain: https://developer.bitcoin.org/reference/block_chain.html, bitcoin.org, bitcoin.org (bitcoin.org) genesis block record; corroborated by encyclopaedia britannica's article on bitcoin, bitcoin.org (official bitcoin project reference site) — states the genesis block was mined on january 3, 2009, bitcoin.org developer guide / bitcoin wiki (genesis block), corroborated by encyclopaedia britannica's entry on bitcoin, both stating the bitcoin genesis block (block 0) was mined by satoshi nakamoto on january 3, 2009., bitcoin.org faq ("when was bitcoin created?" / genesis block, jan 3 2009) and encyclopaedia britannica, "bitcoin" entry, both stating the genesis block was mined on january 3, 2009, bitcoin.org project history (bitcoin.org) and encyclopaedia britannica entry on bitcoin, both stating the genesis block was mined on january 3, 2009., bitcoin.org — bip 85: deterministic entropy from bip32 keychains: https://bitcoin.org/bip/85/, bitcoin.org, "some bitcoin words you might hear" / project history page, and investopedia's bitcoin history article, both state the genesis block was mined on january 3, 2009., blockchain.com explorer, bitcoin block 0 (bitcoin genesis): https://www.blockchain.com/en/explorer/blocks/btc/00000000000000000000, blockchain.com explorer, bitcoin block 0 (genesis block), https://www.blockchain.com/en/explorer/blocks/btc/0000000000000000000000000000000000000000000000000000000000000000, blockstream help center, genesis block glossary: https://help.blockstream.com/education/glossary/genesis-block, blockstream help center, genesis block — https://help.blockstream.com/education/glossary/genesis-block, blockstream help center, genesis block: https://help.blockstream.com/education/glossary/genesis-block, blockstream help center, genesis block: https://help.blockstream.com/education/glossary/genesis-block; central bank of sri lanka, bitcoin and cryptocurrency: myths and realities, part 2: the journey: https://www.cbsl.gov.lk/sites/default/files/cbslweb_documents/statistics/otherpub/information_series_note_20190910_bitcoin_and_cryptocurrency_myths_and_realities_p2_e_0.pdf, blockstream help center, ‘who created bitcoin?’ https://help.blockstream.com/education/fundamentals/getting-started/who-created-bitcoin (states that satoshi mined bitcoin’s genesis block on january 3, 2009)., blockstream help center, ‘who created bitcoin?’ — https://help.blockstream.com/education/fundamentals/getting-started/who-created-bitcoin, blockstream.info, britannica (britannica.com), entry on bitcoin, states the bitcoin network launched with satoshi nakamoto mining the genesis block on january 3, 2009., britannica, "bitcoin" (britannica.com/money/bitcoin) — states the bitcoin network launched when the genesis block was mined by satoshi nakamoto on january 3, 2009., britannica, "bitcoin" (britannica.com/topic/bitcoin): the bitcoin network launched when the genesis block was mined by satoshi nakamoto on january 3, 2009., britannica, "bitcoin" (https://www.britannica.com/topic/bitcoin): the bitcoin network's genesis block was mined by satoshi nakamoto on january 3, 2009., britannica, "bitcoin" entry (britannica.com/topic/bitcoin): states the bitcoin genesis block was mined by satoshi nakamoto on january 3, 2009., central bank of sri lanka, bitcoin and cryptocurrency: myths and realities (pdf), https://www.cbsl.gov.lk/sites/default/files/cbslweb_documents/statistics/otherpub/information_series_note_20190910_bitcoin_and_cryptocurrency_myths_and_realities_p2_e_0.pdf, central bank of sri lanka, bitcoin and cryptocurrency: myths and realities, part 2: the journey (https://www.cbsl.gov.lk/sites/default/files/cbslweb_documents/statistics/otherpub/information_series_note_20190910_bitcoin_and_cryptocurrency_myths_and_realities_p2_e_0.pdf), developer.bitcoin.org, ee374.stanford.edu, en.bitcoin.it, en.wikipedia.org, encyclopaedia britannica, "bitcoin" (britannica.com), which states the bitcoin genesis block was mined on january 3, 2009., encyclopaedia britannica, "bitcoin" (britannica.com/money/bitcoin), which states that satoshi nakamoto mined the bitcoin genesis block (block 0) on january 3, 2009., encyclopaedia britannica, "bitcoin" (britannica.com/topic/bitcoin) — states the bitcoin network launched when the genesis block was mined by satoshi nakamoto on january 3, 2009., encyclopaedia britannica, "bitcoin" (britannica.com/topic/bitcoin): the bitcoin genesis block was mined by satoshi nakamoto on january 3, 2009., encyclopaedia britannica, "bitcoin" article (britannica.com/topic/bitcoin), which states the bitcoin genesis block was mined by satoshi nakamoto on january 3, 2009, encyclopaedia britannica, "bitcoin" article: satoshi nakamoto mined the bitcoin genesis block (block 0) on january 3, 2009., encyclopaedia britannica, "bitcoin" article: states the bitcoin network was launched by satoshi nakamoto in january 2009 with the mining of the genesis block., encyclopaedia britannica, "bitcoin" article: states the bitcoin network was launched by satoshi nakamoto on january 3, 2009, with the mining of the genesis block., encyclopaedia britannica, "bitcoin" article: the bitcoin genesis block (block 0) was mined by satoshi nakamoto on january 3, 2009, encyclopaedia britannica, "bitcoin" entry (bitcoin genesis block mined january 3, 2009); corroborated by bitcoin.org developer reference documenting block 0's timestamp, encyclopaedia britannica, "bitcoin" entry (britannica.com/money/bitcoin), which states the bitcoin genesis block was mined by satoshi nakamoto on january 3, 2009., encyclopaedia britannica, "bitcoin" entry (britannica.com/money/bitcoin), which states the bitcoin network's genesis block was mined by satoshi nakamoto on january 3, 2009., encyclopaedia britannica, "bitcoin" entry (britannica.com/money/bitcoin): the bitcoin genesis block was mined by satoshi nakamoto on january 3, 2009., encyclopaedia britannica, "bitcoin" entry (britannica.com/topic/bitcoin) — states the bitcoin network's genesis block was mined by satoshi nakamoto on january 3, 2009., encyclopaedia britannica, "bitcoin" entry (britannica.com/topic/bitcoin), which states the bitcoin genesis (first) block was mined by satoshi nakamoto on january 3, 2009., encyclopaedia britannica, "bitcoin" entry (britannica.com/topic/bitcoin), which states the bitcoin genesis block was mined on january 3, 2009, encyclopaedia britannica, "bitcoin" entry (britannica.com/topic/bitcoin): the bitcoin genesis block (block 0) was mined by satoshi nakamoto on january 3, 2009., encyclopaedia britannica, "bitcoin" entry, which states the bitcoin genesis block (block 0) was mined by satoshi nakamoto on january 3, 2009., encyclopaedia britannica, "bitcoin" entry: the bitcoin genesis block (block 0) was mined by satoshi nakamoto on january 3, 2009., encyclopaedia britannica, 'bitcoin' article: the bitcoin genesis block (block 0) was mined by satoshi nakamoto on january 3, 2009., encyclopaedia britannica, 'bitcoin' article: the genesis block (block 0) was mined by satoshi nakamoto on january 3, 2009., encyclopaedia britannica, 'bitcoin' entry (britannica.com/topic/bitcoin), which states the bitcoin network's genesis block was mined by satoshi nakamoto on january 3, 2009., encyclopaedia britannica, entry "bitcoin", section on history/origins, accessed 2026-09-25: states the bitcoin genesis block was mined by satoshi nakamoto on january 3, 2009., encyclopaedia britannica, entry "bitcoin": bitcoin's genesis block (block 0) was mined by pseudonymous creator satoshi nakamoto on january 3, 2009., encyclopaedia britannica, entry "bitcoin": states the bitcoin genesis block was mined on january 3, 2009 by satoshi nakamoto., encyclopaedia britannica, entry "bitcoin": states the bitcoin network was launched by satoshi nakamoto in january 2009, when the genesis block (block 0) was mined., encyclopaedia britannica, entry 'bitcoin' (britannica.com/topic/bitcoin), which documents bitcoin's creation and launch by satoshi nakamoto in january 2009, including the mining of the genesis block, encyclopaedia britannica, entry on bitcoin, states that the bitcoin genesis block (block 0) was mined by satoshi nakamoto on january 3, 2009., encyclopaedia britannica, entry on bitcoin, which states the genesis block (block 0) was mined by satoshi nakamoto on january 3, 2009., help.blockstream.com, investopedia, "bitcoin genesis block" (https://www.investopedia.com/terms/g/genesis-block.asp) — states the bitcoin genesis block was mined by satoshi nakamoto on january 3, 2009., nvlpubs.nist.gov, university of california, berkeleyx, cs198.1x week 2 slides, ‘blockchain history: from cypherpunks to jp morgan chase’ (https://prod-edxapp.edx-cdn.org/assets/courseware/v1/30336f8f4bec5b50fcc311a63a5e7e85/asset-v1:berkeleyx%2bcs198.1x%2b2t2018%2btype%40asset%2bblock/week_2_slides.pdf), wikipedia, article 'bitcoin' (en.wikipedia.org/wiki/bitcoin), wikipedia, bitcoin (genesis block mined 3 january 2009); also britannica, wikipedia, bitcoin article (en.wikipedia.org/wiki/bitcoin): satoshi nakamoto mined the genesis block on 3 january 2009, www.blockchain.com, www.britannica.com, www.cbsl.gov.lk, www.computerhistory.org

Work

  1. pinnedblocks 26,057,538 to 26,057,836 to · on Ethereum mainnet
  2. answered140 of 140 agreed140 needed
    #1312,009Britannica (britannica.com), entry on Bitcoin, states the Bitcoin network launched with Satoshi Nakamoto mining the genesis block on January 3, 2009.
    #11332,009Encyclopaedia Britannica, "Bitcoin" article: Satoshi Nakamoto mined the Bitcoin genesis block (block 0) on January 3, 2009.
    #2112,009from help.blockstream.com
    #13452,009from developer.bitcoin.org
    #11992,009Encyclopaedia Britannica, "Bitcoin" entry (bitcoin genesis block mined January 3, 2009); corroborated by Bitcoin.org developer reference documenting block 0's timestamp
    135 more
    #11132,009from en.wikipedia.org
    #4512,009from help.blockstream.com
    #12542,009Encyclopaedia Britannica, 'Bitcoin' entry (britannica.com/topic/Bitcoin), which states the Bitcoin network's genesis block was mined by Satoshi Nakamoto on January 3, 2009.
    #18462,009from ee374.stanford.edu
    #3122,009from developer.bitcoin.org
    #11742,009from help.blockstream.com
    #19592,009from www.blockchain.com
    #3862,009from help.blockstream.com
    #5282,009from www.britannica.com
    #8092,009from en.bitcoin.it
    #2972,009from help.blockstream.com
    #10592,009from en.bitcoin.it
    #652,009Encyclopaedia Britannica, "Bitcoin" (britannica.com), which states the Bitcoin genesis block was mined on January 3, 2009.
    #15452,009from en.wikipedia.org
    #22,009Bitcoin.org Developer Guide / Bitcoin Wiki (genesis block), corroborated by Encyclopaedia Britannica's entry on Bitcoin, both stating the Bitcoin genesis block (block 0) was mined by Satoshi Nakamoto on January 3, 2009.
    #9462,009from www.blockchain.com
    #882,009from www.britannica.com
    #1922,009from en.wikipedia.org
    #62,009Encyclopaedia Britannica, entry "Bitcoin": Bitcoin's genesis block (block 0) was mined by pseudonymous creator Satoshi Nakamoto on January 3, 2009.
    #16892,009from help.blockstream.com
    #14332,009from help.blockstream.com
    #18382,009from help.blockstream.com
    #15482,009from help.blockstream.com
    #15612,009Wikipedia, article 'Bitcoin' (en.wikipedia.org/wiki/Bitcoin)
    #7292,009Encyclopaedia Britannica, "Bitcoin" entry (britannica.com/money/bitcoin), which states the Bitcoin genesis block was mined by Satoshi Nakamoto on January 3, 2009.
    #662,009from blockstream.info
    #16262,009from en.bitcoin.it
    #1802,009from help.blockstream.com
    #12952,009from en.bitcoin.it
    #702,009from prod-edxapp.edx-cdn.org
    #9482,009from en.wikipedia.org
    #5952,009Bitcoin.org FAQ ("When was bitcoin created?" / genesis block, Jan 3 2009) and Encyclopaedia Britannica, "Bitcoin" entry, both stating the genesis block was mined on January 3, 2009
    #7982,009from help.blockstream.com
    #14012,009Encyclopaedia Britannica, "Bitcoin" entry (britannica.com/topic/Bitcoin) — states the Bitcoin network's genesis block was mined by Satoshi Nakamoto on January 3, 2009.
    #1742,009from www.blockchain.com
    #8422,009from github.com
    #9122,009Encyclopaedia Britannica, "Bitcoin" entry (britannica.com/topic/Bitcoin): the Bitcoin genesis block (block 0) was mined by Satoshi Nakamoto on January 3, 2009.
    #15122,009from www.blockchain.com
    #18442,009from help.blockstream.com
    #14472,009from help.blockstream.com
    #15142,009from en.wikipedia.org
    #15062,009from www.blockchain.com
    #16902,009from help.blockstream.com
    #11932,009from www.blockchain.com
    #1672,009from help.blockstream.com
    #17312,009from en.wikipedia.org
    #2802,009from www.blockchain.com
    #17232,009from developer.bitcoin.org
    #14352,009from www.blockchain.com
    #4752,009from en.wikipedia.org
    #4292,009from www.investopedia.com
    #8632,009Encyclopaedia Britannica, "Bitcoin" article: states the Bitcoin network was launched by Satoshi Nakamoto on January 3, 2009, with the mining of the genesis block.
    #14642,009Encyclopaedia Britannica, entry on Bitcoin, states that the Bitcoin genesis block (block 0) was mined by Satoshi Nakamoto on January 3, 2009.
    #8712,009Encyclopaedia Britannica, "Bitcoin" (britannica.com/topic/Bitcoin): the Bitcoin genesis block was mined by Satoshi Nakamoto on January 3, 2009.
    #19652,009from en.wikipedia.org
    #15402,009Britannica, "Bitcoin" (britannica.com/topic/Bitcoin): the Bitcoin network launched when the genesis block was mined by Satoshi Nakamoto on January 3, 2009.
    #4632,009from help.blockstream.com
    #4432,009Encyclopaedia Britannica, "Bitcoin" article (britannica.com/topic/Bitcoin), which states the Bitcoin genesis block was mined by Satoshi Nakamoto on January 3, 2009
    #5272,009from en.wikipedia.org
    #5402,009Bitcoin.org project history (bitcoin.org) and Encyclopaedia Britannica entry on Bitcoin, both stating the genesis block was mined on January 3, 2009.
    #18322,009Encyclopaedia Britannica, "Bitcoin" entry (britannica.com/money/bitcoin): the Bitcoin genesis block was mined by Satoshi Nakamoto on January 3, 2009.
    #8472,009from www.cbsl.gov.lk
    #8622,009from www.blockchain.com
    #14342,009from www.cbsl.gov.lk
    #3552,009from en.bitcoin.it
    #19242,009from help.blockstream.com
    #7042,009Britannica, "Bitcoin" (britannica.com/money/bitcoin) — states the Bitcoin network launched when the genesis block was mined by Satoshi Nakamoto on January 3, 2009.
    #10792,009from en.bitcoin.it
    #16372,009from bitcoin.org
    #12422,009from developer.bitcoin.org
    #18792,009Encyclopaedia Britannica, "Bitcoin" (britannica.com/money/bitcoin), which states that Satoshi Nakamoto mined the Bitcoin genesis block (block 0) on January 3, 2009.
    #3512,009Encyclopaedia Britannica, "Bitcoin" entry, which states the Bitcoin genesis block (block 0) was mined by Satoshi Nakamoto on January 3, 2009.
    #18192,009from developer.bitcoin.org
    #12072,009from en.bitcoin.it
    #15302,009from www.britannica.com
    #6952,009from help.blockstream.com
    #682,009from www.blockchain.com
    #11372,009from help.blockstream.com
    #5592,009from www.britannica.com
    #5242,009from en.wikipedia.org
    #1822,009from help.blockstream.com
    #12152,009Bitcoin.org, "Some Bitcoin words you might hear" / project history page, and Investopedia's Bitcoin history article, both state the genesis block was mined on January 3, 2009.
    #10252,009from www.blockchain.com
    #6062,009Encyclopaedia Britannica, "Bitcoin" entry: the Bitcoin genesis block (block 0) was mined by Satoshi Nakamoto on January 3, 2009.
    #18602,009Encyclopaedia Britannica, "Bitcoin" entry (britannica.com/topic/Bitcoin), which states the Bitcoin genesis block was mined on January 3, 2009
    #3992,009Encyclopaedia Britannica, entry "Bitcoin": states the Bitcoin genesis block was mined on January 3, 2009 by Satoshi Nakamoto.
    #7832,009from bitcoin.org
    #18712,009Encyclopaedia Britannica, entry 'Bitcoin' (britannica.com/topic/Bitcoin), which documents Bitcoin's creation and launch by Satoshi Nakamoto in January 2009, including the mining of the genesis block
    #9262,009from en.bitcoin.it
    #15812,009from en.wikipedia.org
    #7092,009from help.blockstream.com
    #19432,009from en.wikipedia.org
    #18502,009Encyclopaedia Britannica, "Bitcoin" (britannica.com/topic/Bitcoin) — states the Bitcoin network launched when the genesis block was mined by Satoshi Nakamoto on January 3, 2009.
    #14992,009Encyclopaedia Britannica, entry on Bitcoin, which states the genesis block (block 0) was mined by Satoshi Nakamoto on January 3, 2009.
    #3792,009Bitcoin.org (bitcoin.org) genesis block record; corroborated by Encyclopaedia Britannica's article on Bitcoin
    #10852,009from help.blockstream.com
    #17252,009Encyclopaedia Britannica, "Bitcoin" entry (britannica.com/topic/Bitcoin), which states the Bitcoin genesis (first) block was mined by Satoshi Nakamoto on January 3, 2009.
    #9212,009from www.computerhistory.org
    #7592,009from en.wikipedia.org
    #4702,009from blockstream.info
    #7052,009from help.blockstream.com
    #17632,009from en.wikipedia.org
    #6712,009Britannica, "Bitcoin" entry (britannica.com/topic/Bitcoin): states the Bitcoin genesis block was mined by Satoshi Nakamoto on January 3, 2009.
    #13762,009from en.wikipedia.org
    #10202,009from en.bitcoin.it
    #17352,009Wikipedia, Bitcoin (genesis block mined 3 January 2009); also Britannica
    #3282,009Encyclopaedia Britannica, "Bitcoin" entry (britannica.com/money/bitcoin), which states the Bitcoin network's genesis block was mined by Satoshi Nakamoto on January 3, 2009.
    #18982,009from bitcoin.org
    #4892,009from help.blockstream.com
    #11682,009from bitcoin.org
    #19742,009Encyclopaedia Britannica, "Bitcoin" article: the Bitcoin genesis block (block 0) was mined by Satoshi Nakamoto on January 3, 2009
    #2932,009Encyclopaedia Britannica, entry "Bitcoin", section on history/origins, accessed 2026-09-25: states the Bitcoin genesis block was mined by Satoshi Nakamoto on January 3, 2009.
    #7352,009Encyclopaedia Britannica, "Bitcoin" article: states the Bitcoin network was launched by Satoshi Nakamoto in January 2009 with the mining of the genesis block.
    #12512,009from en.wikipedia.org
    #7152,009from www.britannica.com
    #12712,009Wikipedia, Bitcoin article (en.wikipedia.org/wiki/Bitcoin): Satoshi Nakamoto mined the genesis block on 3 January 2009
    #7772,009Encyclopaedia Britannica, entry "Bitcoin": states the Bitcoin network was launched by Satoshi Nakamoto in January 2009, when the genesis block (block 0) was mined.
    #1532,009from developer.bitcoin.org
    #8802,009from en.bitcoin.it
    #6602,009from en.wikipedia.org
    #13112,009from www.cbsl.gov.lk
    #17432,009from bitcoin.org
    #8662,009Bitcoin.org (official Bitcoin project reference site) — states the genesis block was mined on January 3, 2009
    #15092,009from developer.bitcoin.org
    #15842,009from help.blockstream.com
    #19062,009from www.blockchain.com
    #9532,009from help.blockstream.com
    #16492,009from help.blockstream.com
    #10062,009from help.blockstream.com
    #7212,009from help.blockstream.com
    #2942,009Encyclopaedia Britannica, 'Bitcoin' article: the Bitcoin genesis block (block 0) was mined by Satoshi Nakamoto on January 3, 2009.
    #15542,009Encyclopaedia Britannica, 'Bitcoin' article: the genesis block (block 0) was mined by Satoshi Nakamoto on January 3, 2009.
    #2812,009from nvlpubs.nist.gov
    #7182,009from help.blockstream.com
    #18902,009from en.bitcoin.it
  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
    0xa14d2e9eb64a253f5744e65038b0feace57207afb44c9fafc8b0c74dfed5961078b1db2544cd6a3b07e1f1f6a040bb6e4b10c7ea2da859ae115f9af2b844ab091b
    question hash
    0x41e617548d6826ed6c4c12e2ac5aca62c5dedfeec886e4f213b5392fcb9f9cd0
    answer type
    uint256
    consumer
    none named; signed for the zero address
  4. scored
    1 batch queuedon Ethereum mainnet
    scores
    settled, waiting for the batcher