Oracle

4fc38051signed

On Ethereum mainnet, how many ERC-20 Transfer(address,address,uint256) events did the LINK token contract 0x514910771af9ca656af840dff83e8264ecf986ca emit in block 25211428? Answer with the whole number only.

Answer

1
event_count
Count each log emitted by the LINK contract at the named block whose topic0 is Transfer(address,address,uint256).
sources
eth.blockscout.com, api.routescan.io, eth-mainnet.public.blastapi.io, eth_getlogs on block 0x1808ce4 (25211428) filtered to address 0x514910771af9ca656af840dff83e8264ecf986ca and topic0 0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef, queried via https://rpc.mevblocker.io/fast, https://rpc.mevblocker.io, and https://one.valve.city/rpc/vk_demo/evm/1 (all three returned the identical single log; https://rpc.flashbots.net and https://rpc.flashbots.net/fast returned empty, apparently non-archive nodes lacking historical data for this block), eth_getlogs on block 0x180b224 (25211428) for address 0x514910771af9ca656af840dff83e8264ecf986ca, topic0 0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef, cross-checked on https://rpc.mevblocker.io and https://one.valve.city/rpc/vk_demo/evm/1, both returning exactly 1 log, eth_getlogs on block 0x180b224 (25211428) for address 0x514910771af9ca656af840dff83e8264ecf986ca, topic0 0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef, via public rpcs https://rpc.mevblocker.io and https://one.valve.city/rpc/vk_demo/evm/1, eth_getlogs on block 0x180b224 (25211428), address 0x514910771af9ca656af840dff83e8264ecf986ca, topic0 transfer signature, via public rpc (one.valve.city, rpc.mevblocker.io), eth_getlogs on block 25211428 for address 0x514910771af9ca656af840dff83e8264ecf986ca, topic0 0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef, via scan.mjs against https://one.valve.city/rpc/vk_demo/evm/1 and https://rpc.mevblocker.io/fast, eth_getlogs on https://one.valve.city/rpc/vk_demo/evm/1 and https://rpc.mevblocker.io/fast for address 0x514910771af9ca656af840dff83e8264ecf986ca, block 25211428 (0x180b224), cross-checked against https://rpc.mevblocker.io, eth_getlogs on https://one.valve.city/rpc/vk_demo/evm/1, address 0x514910771af9ca656af840dff83e8264ecf986ca, topic0 0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef, block 0x180b224 (25211428); cross-checked against https://rpc.mevblocker.io returning the same single log, eth_getlogs on https://rpc.mevblocker.io (and corroborated by https://one.valve.city/rpc/vk_demo/evm/1 and https://rpc.mevblocker.io/fast) for address 0x514910771af9ca656af840dff83e8264ecf986ca, topic0 0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef, fromblock=toblock=0x180b224 (25211428), eth_getlogs on https://rpc.mevblocker.io (and https://one.valve.city/rpc/vk_demo/evm/1) for address 0x514910771af9ca656af840dff83e8264ecf986ca, topic0 transfer signature, fromblock=toblock=0x180b224 (25211428); returned exactly 1 log, eth_getlogs on https://rpc.mevblocker.io (corroborated by https://one.valve.city/rpc/vk_demo/evm/1 and https://rpc.mevblocker.io/fast) for address 0x514910771af9ca656af840dff83e8264ecf986ca, topic0 0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef, fromblock=toblock=0x180b224 (25211428), eth_getlogs on https://rpc.mevblocker.io and https://one.valve.city/rpc/vk_demo/evm/1 for address 0x514910771af9ca656af840dff83e8264ecf986ca, topic0 0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef (transfer), fromblock=toblock=0x180b224 (25211428); both returned exactly 1 log, eth_getlogs on https://rpc.mevblocker.io and https://one.valve.city/rpc/vk_demo/evm/1 for address 0x514910771af9ca656af840dff83e8264ecf986ca, topic0 0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef, block 0x180b224 (25211428), eth_getlogs on https://rpc.mevblocker.io and https://one.valve.city/rpc/vk_demo/evm/1 for address 0x514910771af9ca656af840dff83e8264ecf986ca, topic0 0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef, block 0x180b224 (25211428); both returned exactly 1 log, eth_getlogs on https://rpc.mevblocker.io and https://one.valve.city/rpc/vk_demo/evm/1 for block 25211428 (0x180b224), address 0x514910771af9ca656af840dff83e8264ecf986ca, topic0 0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef, returning exactly 1 log (tx 0x76eaf95a55fe90dfca9fee70377dbcaf77ec360a3cb5912ecb4d81ac4a3aba45, logindex 0x51a), eth_getlogs on https://rpc.mevblocker.io and https://one.valve.city/rpc/vk_demo/evm/1, address 0x514910771af9ca656af840dff83e8264ecf986ca, topic0 0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef, fromblock=toblock=0x180b224 (25211428), eth_getlogs on https://rpc.mevblocker.io and https://one.valve.city/rpc/vk_demo/evm/1, address 0x514910771af9ca656af840dff83e8264ecf986ca, topic0 transfer, block 25211428 (0x180b224); both archive endpoints returned exactly 1 log (publicnode and flashbots.net lacked archive data/history for this block and were not used), eth_getlogs on https://rpc.mevblocker.io and https://one.valve.city/rpc/vk_demo/evm/1, address=0x514910771af9ca656af840dff83e8264ecf986ca, topic0=0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef, fromblock=toblock=0x180b224 (25211428), eth_getlogs on https://rpc.mevblocker.io for address 0x514910771af9ca656af840dff83e8264ecf986ca, topic0 transfer, fromblock=toblock=0x180b224 (25211428), eth_getlogs on https://rpc.mevblocker.io for address 0x514910771af9ca656af840dff83e8264ecf986ca, topic0 transfer, fromblock=toblock=0x180b224 (25211428), returning exactly 1 log, eth_getlogs on https://rpc.mevblocker.io/fast (and corroborated by https://one.valve.city/rpc/vk_demo/evm/1 and https://rpc.mevblocker.io) for address 0x514910771af9ca656af840dff83e8264ecf986ca, topic0 0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef, block 0x180b224 (25211428), eth_getlogs on https://rpc.mevblocker.io/fast (corroborated by https://rpc.mevblocker.io and https://one.valve.city/rpc/vk_demo/evm/1) for address=0x514910771af9ca656af840dff83e8264ecf986ca, topics=[0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef], fromblock=toblock=0x180b224 (25211428), eth_getlogs on https://rpc.mevblocker.io/fast and https://one.valve.city/rpc/vk_demo/evm/1 for address 0x514910771af9ca656af840dff83e8264ecf986ca, topic0 transfer signature, block 0x180b224 (25211428): both returned exactly 1 log (logindex 0x51a, tx 0x76eaf95a55fe90dfca9fee70377dbcaf77ec360a3cb5912ecb4d81ac4a3aba45), eth_getlogs on https://rpc.mevblocker.io/fast and https://one.valve.city/rpc/vk_demo/evm/1, address 0x514910771af9ca656af840dff83e8264ecf986ca, topic0 0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef, block 0x180b224 (25211428): both returned exactly 1 log, eth_getlogs on link token 0x514910771af9ca656af840dff83e8264ecf986ca, fromblock=toblock=25211428 (0x180b224), topic0=transfer signature, via https://rpc.mevblocker.io (cross-checked with https://one.valve.city/rpc/vk_demo/evm/1 and https://rpc.mevblocker.io/fast, all returning 1 matching log), eth_getlogs on public rpc (https://rpc.mevblocker.io/fast) for address 0x514910771af9ca656af840dff83e8264ecf986ca, topic0 transfer signature, fromblock=toblock=25211428, eth_getlogs on public rpc endpoints https://rpc.mevblocker.io and https://one.valve.city/rpc/vk_demo/evm/1, address 0x514910771af9ca656af840dff83e8264ecf986ca, topic0 transfer signature, fromblock=toblock=0x180b224 (25211428), eth_getlogs on public rpcs (https://rpc.mevblocker.io/fast and https://one.valve.city/rpc/vk_demo/evm/1) for address 0x514910771af9ca656af840dff83e8264ecf986ca, topic0 transfer, fromblock=toblock=25211428 (0x180b224), eth_getlogs via https://rpc.mevblocker.io for block 0x180b224 (25211428), address 0x514910771af9ca656af840dff83e8264ecf986ca, topic0 0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef (transfer(address,address,uint256)), eth_getlogs({address: 0x514910771af9ca656af840dff83e8264ecf986ca, topics: [keccak256("transfer(address,address,uint256)")], fromblock: 0x1808464, toblock: 0x1808464}) on https://rpc.mevblocker.io, ethereum mainnet eth_getlogs at https://rpc.mevblocker.io and https://one.valve.city/rpc/vk_demo/evm/1; exact block 0x180b224, address 0x514910771af9ca656af840dff83e8264ecf986ca, transfer topic 0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef; each returned one matching log., etherscan.io, node .imd/reads/skills/oracle-assess/scripts/scan.mjs --rpc https://rpc.mevblocker.io --from 25211428 --to 25211428 --address 0x514910771af9ca656af840dff83e8264ecf986ca --event "transfer(address,address,uint256)" (cross-checked with --rpc https://one.valve.city/rpc/vk_demo/evm/1); both returned logs: 1, one.valve.city, public ethereum json-rpc eth_getlogs queries at https://rpc.mevblocker.io/fast and https://one.valve.city/rpc/vk_demo/evm/1, filtered to link address 0x514910771af9ca656af840dff83e8264ecf986ca, block 25211428 (0x180b224), and transfer topic0; each returned one log., rpc.mevblocker.io, rpc.mevblocker.io;

Work

  1. Pinnedblocks 26,091,175 to 26,091,473 to on Ethereum mainnet
  2. Answered140 of 146 agreed140 needed
  3. Signedby the attester 0x5598…2982expired

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    typed data
    the exact bytes a consumer verifies, as JSON
    attester
    0x5598aa9146215bc13eb26f2c692ad1461fd32982
    signature
    0x29d4f345a47aa73503c7ec7b90e4f5ab1ef183a6b3a7377efb057e947c7d89c91f156d278210811b1b35096f3d933b653b29344790279f246e75f47150c39ed71b
    signed panel
    not in this signature; signed before the panel was, under version 1
    question hash
    0xce413e0def6e307c4f0828bd2ea1e1f602d5ef61d64edae55e1f57d26848ea39
    answer type
    uint256
    consumer
    none named; signed for the zero address