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.

curl --location --request POST 'https://merlin-mainnet.unifra.io/v1/{your-api-key}' \
--header 'Content-Type: application/json' \
--data-raw '{
    "jsonrpc": "2.0",
    "method": "eth_getLogs",
    "params": [
        {
            "address": "0x000070300830FFC8501Cf42402015bAD12699D71",
            "blockHash": "0xdecf7d1109c108ec3c01cd71e9bff4bd5b8790b86654f95e495012eb66524e25"
        }
    ],
    "id": 0
}'

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

Request

curl --request POST \
     --url https://merlin-mainnet.unifra.io/v1/{your-api-key} \
     --header 'accept: application/json' \
     --header 'content-type: application/json' \
     --data '
{
  "jsonrpc": "2.0",
  "method": "eth_getLogs",
  "params": [
    {
      "fromBlock": "0x5ca46e",
      "toBlock": "0x5ca46f",
      "address": "0x4200000000000000000000000000000000000006",
      "topics": [
        "0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef"
      ]
    }
  ],
  "id": 0
}
'

Result

{
  "jsonrpc": "2.0",
  "id": 0,
  "result": [
    {
      "address": "0x4200000000000000000000000000000000000006",
      "topics": [
        "0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef",
        "0x0000000000000000000000004df34a29aabd0694a62cbf65a844e12a44617975",
        "0x000000000000000000000000360e41201597a82007046329c021abc9d4ae0b6e"
      ],
      "data": "0x000000000000000000000000000000000000000000000000000000e8d4a51000",
      "blockNumber": "0x5ca46f",
      "transactionHash": "0x650f7532fa7c3ccdf4bb8e6db9ca893cff358a92aabd70b320979dabc47ad684",
      "transactionIndex": "0x2",
      "blockHash": "0x5fc58e789ab7d1a5c76f410685c70a84c3e62653c8fd19c660bf265e793f72bf",
      "logIndex": "0x1",
      "removed": false
    },
    {
      "address": "0x4200000000000000000000000000000000000006",
      "topics": [
        "0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef",
        "0x000000000000000000000000abe856bcde2be8b4fbf481e9be8e07279fccdd34",
        "0x000000000000000000000000fea6e5e6f7a831ae028c4d26dcb668613509d1a9"
      ],
      "data": "0x000000000000000000000000000000000000000000000000000f8720e4eb7800",
      "blockNumber": "0x5ca46f",
      "transactionHash": "0xcce1f8becea5f597fffee43cae43d1507690a059ed0835adc1d55a4a4161cadb",
      "transactionIndex": "0x4",
      "blockHash": "0x5fc58e789ab7d1a5c76f410685c70a84c3e62653c8fd19c660bf265e793f72bf",
      "logIndex": "0x6",
      "removed": false
    }
  ]
}