eth_protocolVersion

Returns the current ethereum protocol version used by Optimism Layer 2.

Implementation Examples

cURL

curl -X POST https://api-optimism-mainnet-archive.n.dwellir.com/YOUR_API_KEY \
  -H "Content-Type: application/json" \
  -d '{
    "jsonrpc": "2.0",
    "method": "eth_protocolVersion",
    "params": [],
    "id": 1
  }'

JavaScript

const response = await fetch('https://api-optimism-mainnet-archive.n.dwellir.com/YOUR_API_KEY', {
  method: 'POST',
  headers: { 'Content-Type': 'application/json' },
  body: JSON.stringify({
    jsonrpc: '2.0',
    method: 'eth_protocolVersion',
    params: [],
    id: 1
  })
});

const data = await response.json();
console.log('Protocol version:', parseInt(data.result, 16));

Response Example

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": "0x41"
}

This represents protocol version 65 (0x41 in hex), indicating Ethereum London fork compatibility.

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