eth_getLogs

OptimismC2

Returns logs matching an address/topics filter across a block range. The backbone of indexing token transfers and contract events; wide historic ranges resolve on archive nodes.

Endpoint

POST https://api.1st-node.com/v1/optimism/rpc

Parameters

Name	Type	Description
filter	Object	fromBlock, toBlock, address and topics to match.

Returns

Array — matching log objects with data, topics and block references.

Request

curl https://api.1st-node.com/v1/optimism/rpc \
  -H "Authorization: Bearer $ONE_KEY" \
  -H "content-type: application/json" \
  -d '{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "eth_getLogs",
  "params": [{ "fromBlock": "0x12d4000", "toBlock": "latest", "topics": ["0xddf252ad…"] }]
}'

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "eth_getLogs",
  "params": [{ "fromBlock": "0x12d4000", "toBlock": "latest", "topics": ["0xddf252ad…"] }]
}

Response

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": [{ "address": "0xdac17f…", "topics": ["0xddf252ad…"], "data": "0x…" }]
}

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よくある質問

Can I query a wide historic range?

Yes — archive nodes serve historic logs; very large ranges may be paginated by block window.

How do I index ERC-20 transfers?

Filter on the Transfer topic 0xddf252ad… and the token address.

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