eth_getLogs

GET https://example.com

Xlayer 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.

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.

JSON

params: [
  {
    "blockHash": "0xab001a17d72e49200f7115c4a59d7e12c6ac7d305b0b0318c275b137e1544f9d",
    "topics": [
      "0x1c411e9a96e071241c2f21f7726b17ae89e3cab4c78be50e062b03a9fffbbad1"
    ]
  }
]

---

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.

Provider limits: For reliability, query smaller block ranges and include address and/or topics filters. Large unfiltered ranges may be rejected.

---

Example

Request

cURL

curl https://xlayer-mainnet.unifra.io/v1/your-api-key \
-X POST \
-H "Content-Type: application/json" \
-d '{
  "jsonrpc": "2.0",
  "method": "eth_getLogs",
  "params": [{
      "address": "0x2ef3723bb09c311d035334b11614efadbd0d7a24",
      "topics": ["0x1c411e9a96e071241c2f21f7726b17ae89e3cab4c78be50e062b03a9fffbbad1"],
      "blockHash": "0xab001a17d72e49200f7115c4a59d7e12c6ac7d305b0b0318c275b137e1544f9d"
  }],
  "id": 1
}'

Postman

URL: https://Xlayer-mainnet.unifra.io/v1/your-api-key
RequestType: POST
Body:
{
    "jsonrpc":"2.0",
    "method":"eth_getLogs",
    "params":[{
      "address": "0x2ef3723bb09c311d035334b11614efadbd0d7a24",
      "topics": ["0x1c411e9a96e071241c2f21f7726b17ae89e3cab4c78be50e062b03a9fffbbad1"],
      "blockHash": "0xab001a17d72e49200f7115c4a59d7e12c6ac7d305b0b0318c275b137e1544f9d"
    }],
    "id":0
}

Result

JSON

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": [
    {
      "address": "0x2ef3723bb09c311d035334b11614efadbd0d7a24",
      "topics": [
        "0x1c411e9a96e071241c2f21f7726b17ae89e3cab4c78be50e062b03a9fffbbad1"
      ],
      "data": "0x00000000000000000000000000000000000000000012f0881b264de1f245e399000000000000000000000000000000000000000000000031038e8956add503f6",
      "blockNumber": "0x2208075",
      "transactionHash": "0x339bcbcde793ca98a74feb14b753f0868aaa152c77770c3875f8cf932df03e92",
      "transactionIndex": "0xc",
      "blockHash": "0xab001a17d72e49200f7115c4a59d7e12c6ac7d305b0b0318c275b137e1544f9d",
      "logIndex": "0x10",
      "removed": false
    },
    {
      "address": "0x2ef3723bb09c311d035334b11614efadbd0d7a24",
      "topics": [
        "0x1c411e9a96e071241c2f21f7726b17ae89e3cab4c78be50e062b03a9fffbbad1"
      ],
      "data": "0x00000000000000000000000000000000000000000012eef8f1831877968dc2ad000000000000000000000000000000000000000000000031079a74b37e4a8d38",
      "blockNumber": "0x2208075",
      "transactionHash": "0x339bcbcde793ca98a74feb14b753f0868aaa152c77770c3875f8cf932df03e92",
      "transactionIndex": "0xc",
      "blockHash": "0xab001a17d72e49200f7115c4a59d7e12c6ac7d305b0b0318c275b137e1544f9d",
      "logIndex": "0x14",
      "removed": false
    }
  ]
}