eth_getLogs

Returns an array of all logs matching a given filter object.

NOTE: We enforce a limit of 10,000 block ranges when requesting logs and events. The 10,000 block range limit is not a limit on how far back in time you can query but rather a limit on the number of blocks you can query in a single request. To work around the limit, we recommend breaking down your queries into smaller chunks of 10,000 blocks or less.

Parameters

1. Object - The filter options:

• fromBlock: QUANTITY|TAG - (optional, default: "latest") Integer block number, or "latest" for the last mined block or "pending", "earliest" for not yet mined transactions.

• toBlock: QUANTITY|TAG - (optional, default: "latest") Integer block number, or "latest" for the last mined block or "pending", "earliest" for not yet mined transactions.

• address: DATA|Array, 20 Bytes - (optional) Contract address or a list of addresses from which logs should originate.

• topics: Array of DATA, - (optional) Array of 32 Bytes DATA topics. Topics are order-dependent. Each topic can also be an array of DATA with "or" options.

• blockhash: DATA, 32 Bytes - (optional, future) With the addition of EIP-234, blockHash will be a new filter option which restricts the logs returned to the single block with the 32-byte hash blockHash. Using blockHash is equivalent to fromBlock = toBlock = the block number with hash blockHash. If blockHash is present in the filter criteria, then neither fromBlock nor toBlock are allowed.

Returns

Array - Array of log objects, or an empty array if nothing has changed since last poll.

• For filters created with eth_newBlockFilter the return are block hashes (DATA, 32 Bytes), e.g. ["0x3454645634534..."].

• For filters created with eth_newPendingTransactionFilter the return are transaction hashes (DATA, 32 Bytes), e.g. ["0x6345343454645..."].

• For filters created with eth_newFilter logs are objects with following params:

  • removed: TAG - true when the log was removed, due to a chain reorganization. false if its a valid log.

  • logIndex: QUANTITY - integer of the log index position in the block. null when its pending log.

  • transactionIndex: QUANTITY - integer of the transactions index position log was created from. null when its pending log.

  • transactionHash: DATA, 32 Bytes - hash of the transactions this log was created from. null when its pending log.

  • blockHash: DATA, 32 Bytes - hash of the block where this log was in. null when its pending. null when its pending log.

  • blockNumber: QUANTITY - the block number where this log was in. null when its pending. null when its pending log.

  • address: DATA, 20 Bytes - address from which this log originated.

  • data: DATA - contains one or more 32 Bytes non-indexed arguments of the log.

  • topics: Array of DATA - Array of 0 to 4 32 Bytes DATA of indexed log arguments. (In solidity: The first topic is the hash of the signature of the event (e.g. Deposit(address,bytes32,uint256)), except you declared the event with the anonymous specifier.)

Example

NOTE: In this example we are using public Ethereum endpoint. Ideally, for your own projects, you should use your own endpoint, which you can generate for free by connecting to your wallet here.

ethers

Query

NOTE: ethers used below is a well-known web3 library, check it out here.

import { ethers } from 'ethers';

const provider =
  new ethers
    .providers
    .JsonRpcProvider("https://www.noderpc.xyz/rpc-mainnet/public")

const fetchLogs = async ()=> {
  const logs = await provider.getLogs({address: "0x8A001303158670E284950565164933372807cD48", topic: "0xdAC17F958D2ee523a2206206994597C13D831ec7"});
  console.log(logs);

}
fetchLogs();

Result

[
    {
        "blockNumber": 17384990,
        "blockHash": "0xfff785b8b971a19b301a8e936e624a7c06331b654d94ec8c68c1a0798dcc15ae",
        "transactionIndex": 71,
        "removed": false,
        "address": "0x8A001303158670E284950565164933372807cD48",
        "data": "0x0000000000000000000000000000000000000000288ab90e3607090cde019017",
        "topics": [
            "0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef",
            "0x000000000000000000000000453b90482eb99a243a245501b0af4cf25f59965a",
            "0x000000000000000000000000505c27a2935d99bf01f62e2ac31f689fb0227418"
        ],
        "transactionHash": "0x2ebc4c64747377f59138ce4e1ba966a06078c2cda0cb1298dd50da76b7290a4a",
        "logIndex": 198
    }
]