eth_getLogs - Ethereum

Shows you an array which contains all logs that suit the filter with the stated filter objects

How to Use the eth_getLogs Method

The size of response for getFilterLogs method varies due to your block range:

• Block range > 50K: unavailable

• Block range <= 100: No limitations

• Block range between 100 and 50K: No more than 50K records can be responded

Parameters

Object - The following available filter options:

• address [variable] - a string that shows the address (20 bytes) which balances you want to look up

• fromBlock [variable, default is "latest"] - the string "latest", "earliest" or "pending", or an integer block number

• toBlock [variable, default is "latest"] - the string "latest", "earliest" or "pending", or an integer block number"

• topics[variable] - Array of 32 Bytes order-dependent DATA topics.

• blockhash:[variable] If you add EIP-234, blockHash will restrict the logs returned to the single block with the 32-byte hash blockHash. Using blockHash has the same meaning as fromBlock = toBlock = the block number with hash blockHash. If blockHash you add in the filter criteria, then neither fromBlock nor toBlock won’t be available.

What you receive

LOG OBJECTS - Array with log objects in it. In case if nothing has changed since the last poll you’ll receive an empty one.

• logs will be presented as objects with parameters stated below:

  • removed: TAG - true in case of the log removal, because of a chain reorganization. false if it's an existing actual log.

  • logIndex: QUANTITY - the log index position presented as an integer. returns null in case of a pending log.

  • transactionIndex: QUANTITY - the transactions index position log was created from, has an integer form. null in case of a pending log.

  • transactionHash: DATA, 32 Bytes - transactions’ hash that has created this log. returns null in case of a pending log.

  • blockHash: DATA, 32 Bytes - the block’s hash where this log was located. returns null in case of a pending log.

  • blockNumber: QUANTITY - the block’s number where this log was located. returns null in case of a pending log.

  • address: DATA, 20 Bytes - the log’s origination address.

  • data: DATA - a param with the log’s non-indexed arguments.

  • topics: Array of DATA - contains from 0 to 4 32 Bytes DATA with indexed log arguments. (In solidity: The first topic is the hash of the signature of the event (such as Deposit(address,bytes32,uint256)), unless the event declaration is with the anonymous specifier.)

Sample

Here is a typical appliance example.

Call

Curl

curl https://eth-mainnet.rpcfast.com/?api_key=<key> \
  -X POST \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","method":"eth_getLogs","params":[{"address": "0xb59f67a8bff5d8cd03f6ac17265c550ed8f33907","topics": ["0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef"],"blockHash": "0x8243343df08b9751f5ca0c5f8c9c0460d8a9b6351066fae0acbd4d3e776de8bb"}],"id":0}'

Outcome

{
    "jsonrpc": "2.0",
    "id": 73,
    "result": [{
        "address": "0xb5a5f22694352c15b00323844ad545abb2b11028",
        "blockHash": "0x99e8663c7b6d8bba3c7627a17d774238eae3e793dee30008debb2699666657de",
        "blockNumber": "0x5d12ab",
        "data": "0x0000000000000000000000000000000000000000000000a247d7a2955b61d000",
        "logIndex": "0x0",
        "removed": false,
        "topics": ["0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef", "0x000000000000000000000000bdc0afe57b8e9468aa95396da2ab2063e595f37e", "0x0000000000000000000000007503e090dc2b64a88f034fb45e247cbd82b8741e"],
        "transactionHash": "0xa74c2432c9cf7dbb875a385a2411fd8f13ca9ec12216864b1a1ead3c99de99cd",
        "transactionIndex": "0x3"
    }, {
        "address": "0xe38165c9f6deb144afc9c32c206b024817e1496d",
        "blockHash": "0x99e8663c7b6d8bba3c7627a17d774238eae3e793dee30008debb2699666657de",
        "blockNumber": "0x5d12ab",
        "data": "0x0000000000000000000000000000000000000000000000000000000025c6b720",
        "logIndex": "0x3",
        "removed": false,
        "topics": ["0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef", "0x00000000000000000000000080e73e47173b2d00b531bf83bc39e710157125c3", "0x0000000000000000000000008f6cc93795969e5bbbf07c66dfee7d41ad24f1ef"],
        "transactionHash": "0x9e8f1cb1facb9a11a1cf947634053a0b2d557399f926b12127aa10497a2f0153",
        "transactionIndex": "0x5"
    }
}