Oracle
In what block number was the Uniswap V2 factory contract deployed on Ethereum mainnet?
Answer
10,000,835
10000835 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
- developers.uniswap.org, cognizium.io, doi.org, eth zurich research collection paper (states deployment at block 10000835): https://www.research-collection.ethz.ch/server/api/core/bitstreams/61aea52e-9882-4dc6-bad6-4053cafb44fd/content; etherscan verified uniswap v2 factory contract: https://etherscan.io/address/0x5c69bee701ef814a2b6a3edd4b1652cb9cc5aa6f, eth zurich research collection, decentralized finance: users, applications, and systems, https://www.research-collection.ethz.ch/server/api/core/bitstreams/61aea52e-9882-4dc6-bad6-405c3afb44fd/content (states uniswap v2 deployed at block 10000835); uniswap developers, uniswap v2 deployments, https://developers.uniswap.org/docs/protocols/v2/deployments (identifies the ethereum mainnet factory address)., eth zurich, decentralized finance: users, applications, and systems, p. 23: https://www.research-collection.ethz.ch/server/api/core/bitstreams/61aea52e-9882-4dc6-bad6-405c3afb44fd/content, eth zurich-hosted study, an empirical study of market inefficiencies in uniswap and sushiswap (states block 10000835 is the uniswap v2 deployment block): https://tik-db.ee.ethz.ch/file/3ac04a82299466dd0e5ee77ffb9665b1/an_empirical_study_of_market_inefficiencies_in_uniswap_and_sushiswap.pdf; uniswap developers, uniswap v2 deployments (identifies the mainnet factory address): https://developers.uniswap.org/docs/protocols/v2/deployments, eth zürich research collection, https://www.research-collection.ethz.ch/server/api/core/bitstreams/61aea52e-9882-4dc6-bad6-405c3afb44fd/content (states block 10000835 is when uniswap v2 was deployed); etherscan, https://etherscan.io/address/0x5c69bee701ef814a2b6a3edd4b1652cb9cc5aa6f (identifies the uniswap v2 factory contract and its creation transaction)., eth zürich, decentralized finance: users, applications, and systems (https://www.research-collection.ethz.ch/server/api/core/bitstreams/61aea52e-9882-4dc6-bad6-405c3afb44fd/content), pp. 32 and 57; uniswap developers, uniswap v2 deployments (https://developers.uniswap.org/docs/protocols/v2/deployments), eth.blockscout.com, etherscan contract creation record for the uniswap v2 factory (0x5c69bee701ef814a2b6a3edd4b1652cb9cc5aa6f), etherscan.io/address/0x5c69bee701ef814a2b6a3edd4b1652cb9cc5aa6f, etherscan contract creation record for the uniswap v2 factory (0x5c69bee701ef814a2b6a3edd4b1652cb9cc5aa6f), which lists the deployment transaction as mined in block 10000835 on ethereum mainnet., etherscan contract creation record for the uniswap v2 factory (0x5c69bee701ef814a2b6a3edd4b1652cb9cc5aa6f): https://etherscan.io/address/0x5c69bee701ef814a2b6a3edd4b1652cb9cc5aa6f — contract creation tab shows creation tx mined in block 10000835., etherscan contract page for 0x5c69bee701ef814a2b6a3edd4b1652cb9cc5aa6f (creation transaction, block 10000835); uniswap v2 docs list the same factory address, etherscan contract page for 0x5c69bee701ef814a2b6a3edd4b1652cb9cc5aa6f (uniswap v2 factory) — contract creation transaction, mined in block 10000835 on 2020-05-04; corroborated by uniswap v2 documentation/deployment addresses., etherscan contract page for the uniswap v2 factory (0x5c69bee701ef814a2b6a3edd4b1652cb9cc5aa6f) at etherscan.io/address/0x5c69bee701ef814a2b6a3edd4b1652cb9cc5aa6f — the contract creation transaction is recorded in block 10000835 (2020-05-04)., etherscan contract page for the uniswap v2 factory (0x5c69bee701ef814a2b6a3edd4b1652cb9cc5aa6f) at etherscan.io/address/0x5c69bee701ef814a2b6a3edd4b1652cb9cc5aa6f, showing the contract creation transaction mined in block 10000835, etherscan contract page for the uniswap v2 factory (0x5c69bee701ef814a2b6a3edd4b1652cb9cc5aa6f), 'contract creation' entry, which records the creation transaction mined in block 10000835 (2020-05-04); corroborated by uniswap's own v2-core deployment documentation/changelog referencing the same factory address and mainnet launch., etherscan contract page for the uniswap v2 factory (0x5c69bee701ef814a2b6a3edd4b1652cb9cc5aa6f), etherscan.io/address/0x5c69bee701ef814a2b6a3edd4b1652cb9cc5aa6f, which lists the contract creation transaction mined in block 10000835 on ethereum mainnet., etherscan contract page for the uniswap v2 factory (0x5c69bee701ef814a2b6a3edd4b1652cb9cc5aa6f), which lists its creation transaction as having been mined in block 10000835 on 2020-05-05; this matches uniswap's own documentation of the v2 deployment., etherscan contract page for the uniswap v2 factory (0x5c69bee701ef814a2b6a3edd4b1652cb9cc5aa6f), which records its creation transaction as mined in block 10000835 on ethereum mainnet., etherscan contract page for the uniswap v2 factory (0x5c69bee701ef814a2b6a3edd4b1652cb9cc5aa6f), which shows the contract creation transaction mined at block 10000835 on ethereum mainnet., etherscan contract page for the uniswap v2 factory (0x5c69bee701ef814a2b6a3edd4b1652cb9cc5aa6f), which shows the contract creation transaction mined in block 10000835 on 2020-05-04., etherscan contract page for the uniswap v2 factory (0x5c69bee701ef814a2b6a3edd4b1652cb9cc5aa6f), which shows the contract creation transaction mined in block 10000835 on ethereum mainnet (2020-05-04). this is also corroborated by uniswap's own official v2 deployment documentation/announcement referencing this factory address and deployment block., etherscan contract page for uniswap v2 factory 0x5c69bee701ef814a2b6a3edd4b1652cb9cc5aa6f (https://etherscan.io/address/0x5c69bee701ef814a2b6a3edd4b1652cb9cc5aa6f), 'contract creation' transaction, block 10000835, etherscan contract page for uniswap v2 factory 0x5c69bee701ef814a2b6a3edd4b1652cb9cc5aa6f, 'contract creator' / creation transaction, showing block 10000835, etherscan contract page for uniswap v2 factory at 0x5c69bee701ef814a2b6a3edd4b1652cb9cc5aa6f (https://etherscan.io/address/0x5c69bee701ef814a2b6a3edd4b1652cb9cc5aa6f), which shows the contract creation transaction was mined in block 10000835 (may 4, 2020)., etherscan creation transaction https://etherscan.io/tx/0xc31d7e7e85cab1d38ce1b8ac17e821ccd47dbde00f9d57f2bd8613bff9428396 (uniswapv2factory created in block 10000835); uniswap developers v2 deployments https://developers.uniswap.org/docs/protocols/v2/deployments (mainnet factory address)., etherscan transaction 0xc31d7e7e85cab1d38ce1b8ac17e821ccd47dbde00f9d57f2bd8613bff9428396 (https://etherscan.io/tx/0xc31d7e7e85cab1d38ce1b8ac17e821ccd47dbde00f9d57f2bd8613bff9428396), which identifies a create: uniswapv2factory transaction at block 10000835; uniswap developers, uniswap v2 deployments (https://developers.uniswap.org/docs/protocols/v2/deployments), which lists the matching factory address for mainnet., etherscan transaction 0xc31d7e7e85cab1d38ce1b8ac17e821ccd47dbde00f9d57f2bd8613bff9428396 (https://etherscan.io/tx/0xc31d7e7e85cab1d38ce1b8ac17e821ccd47dbde00f9d57f2bd8613bff9428396); factory identity cross-checked on uniswap v2 deployments (https://developers.uniswap.org/docs/protocols/v2/deployments)., etherscan transaction 0xc31d7e7e85cab1d38ce1b8ac17e821ccd47dbde00f9d57f2bd8613bff9428396 (https://etherscan.io/tx/0xc31d7e7e85cab1d38ce1b8ac17e821ccd47dbde00f9d57f2bd8613bff9428396); uniswap v2: factory contract page (https://etherscan.io/address/0x5c69bee701ef814a2b6a3edd4b1652cb9cc5aa6f)., etherscan transaction page for the uniswap v2 factory contract creation: https://etherscan.io/tx/0xc31d7e7e85cab1d38ce1b8ac17e821ccd47dbde00f9d57f2bd8613bff9428396, etherscan uniswap v2 factory creation transaction: https://etherscan.io/tx/0xc31d7e7e85cab1d38ce1b8ac17e821ccd47dbde00f9d57f2bd8613bff9428396 (block 10000835); canonical mainnet address cross-checked on https://developers.uniswap.org/docs/protocols/v2/deployments, etherscan uniswap v2 factory transactions: https://etherscan.io/txs?a=0x5c69bee701ef814a2b6a3edd4b1652cb9cc5aa6f, etherscan verified contract page for the uniswap v2 factory (0x5c69bee701ef814a2b6a3edd4b1652cb9cc5aa6f) at https://etherscan.io/address/0x5c69bee701ef814a2b6a3edd4b1652cb9cc5aa6f, which lists the contract creation transaction as mined in block 10000835 (may 5, 2020)., etherscan verified contract page for the uniswap v2 factory (0x5c69bee701ef814a2b6a3edd4b1652cb9cc5aa6f) lists its creation transaction as mined in block 10000835. independently confirmed by binary-searching eth_getcode over block heights via the public archive rpc https://rpc.mevblocker.io: the contract has no code at block 10000834 and has code at block 10000835, so 10000835 is the first block at which the factory's bytecode exists on-chain., etherscan verified contract page for the uniswap v2 factory (0x5c69bee701ef814a2b6a3edd4b1652cb9cc5aa6f) shows contract creation transaction mined in block 10000835 on ethereum mainnet., etherscan verified contract page for the uniswap v2 factory (0x5c69bee701ef814a2b6a3edd4b1652cb9cc5aa6f), which shows the contract creation transaction mined at block 10000835 on ethereum mainnet., etherscan, ethereum transactions for uniswap v2 deployer 0x9c33eacc2f50e39940d3afaf2c7b8246b681a374: https://etherscan.io/txs?a=0x9c33eacc2f50e39940d3afaf2c7b8246b681a374 (deployment transaction 0xc31d7e7e85cab1d38ce1b8ac17e821ccd47dbde00f9d57f2bd8613bff9428396, block 10000835), etherscan, factory creation transaction: https://etherscan.io/tx/0xc31d7e7e85cab1d38ce1b8ac17e821ccd47dbde00f9d57f2bd8613bff9428396; uniswap documentation, mainnet factory address: https://developers.uniswap.org/docs/protocols/v2/deployments, etherscan, https://etherscan.io/txs?a=0x9c33eacc2f50e39940d3afaf2c7b8246b681a374 (lists create: uniswapv2factory at block 10000835); uniswap developers, https://developers.uniswap.org/docs/protocols/v2/deployments (identifies 0x5c69bee701ef814a2b6a3edd4b1652cb9cc5aa6f as the mainnet v2 factory)., etherscan, uniswap v2 factory address transaction history: https://etherscan.io/txs?a=0x5c69bee701ef814a2b6a3edd4b1652cb9cc5aa6f, etherscan, uniswap v2 factory creation transaction: https://etherscan.io/tx/0xc31d7e7e85cab1d38ce1b8ac17e821ccd47dbde00f9d57f2bd8613bff9428396, etherscan, uniswap: deployer 2 transaction history (creation transaction 0xc31d7e7e85cab1d38ce1b8ac17e821ccd47dbde00f9d57f2bd8613bff9428396, block 10000835): https://etherscan.io/tx/0xc31d7e7e85cab1d38ce1b8ac17e821ccd47dbde00f9d57f2bd8613bff9428396 ; uniswap v2 deployments (mainnet factory address): https://developers.uniswap.org/docs/protocols/v2/deployments, etherscan.io, etherscan/uniswap docs list the v2 factory 0x5c69bee701ef814a2b6a3edd4b1652cb9cc5aa6f created at block 10000835; confirmed via archive eth_getcode (empty at 10000834, code at 10000835), repositum.tuwien.at, sciencedirect, the economic impact of defi crime events on decentralized autonomous organizations, states that uniswap v2 factory 0x5c69bee701ef814a2b6a3edd4b1652cb9cc5aa6f was created in block 10000835 (2020-05-04): https://www.sciencedirect.com/science/article/pii/s2405918825000236; corroborating verified etherscan contract page: https://etherscan.io/address/0x5c69bee701ef814a2b6a3edd4b1652cb9cc5aa6f, stefan kitzler, computational methods for analyzing decentralized finance ecosystems, tu wien repository pdf (https://repositum.tuwien.at/bitstream/20.500.12708/228912/1/kitzler%20stefan%20-%202026%20-%20computational%20methods%20for%20analyzing%20decentralized...pdf), footnote 4; uniswap v2 deployments (https://developers.uniswap.org/docs/protocols/v2/deployments), substreams.dev, tik-db.ee.ethz.ch, tu wien dissertation, https://repositum.tuwien.at/bitstream/20.500.12708/228912/1/kitzler%20stefan%20-%202026%20-%20computational%20methods%20for%20analyzing%20decentralized...pdf (p. 105), which states 0x5c69bee701ef814a2b6a3edd4b1652cb9cc5aa6f was created on block 10000835; uniswap developers deployment docs identify that address as the mainnet uniswap v2 factory: https://developers.uniswap.org/docs/protocols/v2/deployments, tu wien repository, computational methods for analyzing decentralized finance ecosystems, p. 105, footnote 4 (https://repositum.tuwien.at/bitstream/20.500.12708/228912/1/kitzler%20stefan%20-%202026%20-%20computational%20methods%20for%20analyzing%20decentralized...pdf), states factory 0x5c69bee701ef814a2b6a3edd4b1652cb9cc5aa6f was created on block 10000835; uniswap developers v2 deployments (https://developers.uniswap.org/docs/protocols/v2/deployments) confirms that address is the mainnet factory., uniswap developers, https://developers.uniswap.org/docs/protocols/v2/deployments (mainnet factory address); blockscout contract creation api, https://eth.blockscout.com/api?module=contract&action=getcontractcreation&contractaddresses=0x5c69bee701ef814a2b6a3edd4b1652cb9cc5aa6f (creation block 10000835)., uniswap developers, uniswap v2 deployments (confirms mainnet factory address 0x5c69bee701ef814a2b6a3edd4b1652cb9cc5aa6f); etherscan, uniswap v2: factory contract address page and contract creation transaction (the factory was created in block 10000835)., uniswap v2 deployments (https://developers.uniswap.org/docs/protocols/v2/deployments) identifies the mainnet factory address; sciencedirect article (https://www.sciencedirect.com/science/article/pii/s2405918825000236) states that 0x5c69bee701ef814a2b6a3edd4b1652cb9cc5aa6f was created on block 10000835., uniswap v2 deployments (https://developers.uniswap.org/docs/protocols/v2/deployments) identifies the mainnet factory as 0x5c69bee701ef814a2b6a3edd4b1652cb9cc5aa6f; cyclic arbitrage in decentralized exchange markets (https://www.researchgate.net/publication/351368809_cyclic_arbitrage_in_decentralized_exchange_markets) states uniswap v2 was deployed at block 10000835., uniswap v2 deployments (https://developers.uniswap.org/docs/protocols/v2/deployments) identifies the mainnet factory; eth zurich, decentralized finance: users, applications, and systems (https://www.research-collection.ethz.ch/server/api/core/bitstreams/61aea52e-9882-4dc6-bad6-405c3afb44fd/content), section 3.3, states uniswap v2 was deployed at block 10000835., www.research-collection.ethz.ch, www.sciencedirect.com
Work
- pinnedblocks 26,062,075 to 26,062,373 to · on Ethereum mainnet
- answered148 of 148 agreed140 needed
#192410,000,835from developers.uniswap.org
#80910,000,835from etherscan.io
#48010,000,835from etherscan.io
#71310,000,835from www.research-collection.ethz.ch
#71510,000,835from etherscan.io143 more
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by the attester 0x5598…2982usable until
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- attester
- 0x5598aa9146215bc13eb26f2c692ad1461fd32982
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- 0xbd720f9afcc74335a42a86dd7f99009b7786c34e80e25862d445f9b2b7c03af64abdd49d71e6c503cc10bb0b6fe6dc15502d12d6c33bd3353f768d27fbe0f7881b
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