eth_getLogs

Returns an array of all logs matching a given filter object on Optimism Layer 2.

Parameters

1. Filter Object
   • fromBlock - Starting block (hex or tag)
   • toBlock - Ending block (hex or tag)
   • address - Contract address(es)
   • topics - Array of topics to match

Implementation Examples

cURL

curl -X POST https://api-cronos-mainnet-archive.n.dwellir.com/YOUR_API_KEY -H "Content-Type: application/json" -d '{"jsonrpc":"2.0","method":"eth_getLogs","params":[{"blockHash":"0xa50c9486b52ee759d08eb11460a667e3849af73bfa264acf1351d81d1cde1803","topics":["0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef"]}],"id":1}'

JavaScript

const response = await fetch('https://api-cronos-mainnet-archive.n.dwellir.com/YOUR_API_KEY', {
  method: 'POST',
  headers: { 'Content-Type': 'application/json' },
  body: JSON.stringify({
    jsonrpc: '2.0',
    method: 'eth_getLogs',
    params: [{
      fromBlock: "0x1",
      toBlock: "latest",
      address: "0x4200000000000000000000000000000000000006" // WETH on Optimism
    }],
    id: 1
  })
});

const data = await response.json();
console.log('Logs:', data.result);

Response Example

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": [
    {
      "address": "0x4200000000000000000000000000000000000006",
      "topics": ["0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef"],
      "data": "0x0000000000000000000000000000000000000000000000000de0b6b3a7640000",
      "blockNumber": "0x75bcd15"
    }
  ]
}

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