eth_getLogs - Arbitrum
Arbitrum API - Returns an array of all logs matching a given filter object. For more information about eth_getLogs check out our Deep Dive into eth_getLogs page.
NOTE: You can make eth_getLogs requests with up to a 2K block range and 150MB limit on the response size OR you can request any block range with a cap of 10K logs in the response.
If you need to pull logs frequently, we recommend using WebSockets to push new logs to you when they are available

Parameters

Object - The filter options:
  • fromBlock: QUANTITY|TAG - (optional, default: "latest") Value:
    • Integer block number
    • "latest" for the last mined block
    • "pending", "earliest" for not yet mined transactions.
  • toBlock: QUANTITY|TAG - (optional, default: "latest") Value:
    • Integer block number
    • "latest" for the last mined block
    • "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.
    • Check out more details on how to format topics in eth_newFilter.
  • blockHash: DATA, 32 Bytes - (optional) With the addition of EIP-234 (Geth >= v1.8.13 or Parity >= v2.1.0), blockHash is 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.**
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params: [
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{
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"address": "0xb59f67a8bff5d8cd03f6ac17265c550ed8f33907",
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"topics": [
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"0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef"
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],
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"blockHash": "0x8243343df08b9751f5ca0c5f8c9c0460d8a9b6351066fae0acbd4d3e776de8bb"
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}
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]
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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 declare the event with the anonymous specifier.

    Example

    The Alchemy Composer allows you to make a no-code example request via your browser. Try it out above!

Request

Curl
Postman
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curl https://arb-mainnet.g.alchemy.com/v2/your-api-key \
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-X POST \
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-H "Content-Type: application/json" \
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-d '{"jsonrpc":"2.0","method":"eth_getLogs","params":[{"address": "0xb59f67a8bff5d8cd03f6ac17265c550ed8f33907","topics": ["0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef"],"blockHash": "0x8243343df08b9751f5ca0c5f8c9c0460d8a9b6351066fae0acbd4d3e776de8bb"}],"id":0}'
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URL: https://arb-mainnet.g.alchemy.com/v2/your-api-key
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RequestType: POST
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Body:
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{
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"jsonrpc":"2.0",
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"method":"eth_getLogs",
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"params":[{"address": "0xb59f67a8bff5d8cd03f6ac17265c550ed8f33907","topics": ["0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef"],"blockHash": "0x8243343df08b9751f5ca0c5f8c9c0460d8a9b6351066fae0acbd4d3e776de8bb"}],
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"id":0
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}
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Result

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{
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"jsonrpc": "2.0",
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"id": 0,
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"result": [
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{
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"address": "0xb59f67a8bff5d8cd03f6ac17265c550ed8f33907",
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"topics": [
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"0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef",
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"0x00000000000000000000000000b46c2526e227482e2ebb8f4c69e4674d262e75",
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"0x00000000000000000000000054a2d42a40f51259dedd1978f6c118a0f0eff078"
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],
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"data": "0x000000000000000000000000000000000000000000000000000000012a05f200",
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"blockNumber": "0x429d3b",
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"transactionHash": "0xab059a62e22e230fe0f56d8555340a29b2e9532360368f810595453f6fdd213b",
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"transactionIndex": "0xac",
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"blockHash": "0x8243343df08b9751f5ca0c5f8c9c0460d8a9b6351066fae0acbd4d3e776de8bb",
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"logIndex": "0x56",
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"removed": false
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}
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]
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}
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Arbitrum API
Alchemy Documentation