optimism_outputAtBlock

POST

This method is used to retrieve the output root at a specific block. Users can call it by providing the block number in hexadecimal format, and a successful call returns the output root for that block. The output root is an important element representing the state of Optimism and can be used to verify the state of a specific block.

param[0]

blockNumberstringrequired

Block number indicates the sequential order of a block. Block numbers are expressed as hexadecimal strings.

Responses

codestringrequired

Code identifying the cause of the failed request.

messagestringrequired

Detailed message including the name and value of the invalid parameter.

{
  "code": "ERROR_CODE",
  "message": "Unauthorized"
}

X-API-KEY

cURL

curl -X POST 'https://optimism-mainnet.nodit.io' \
  -H 'Content-Type: application/json' \
  -H 'X-API-KEY: nodit-demo' \
  -d '{
    "jsonrpc": "2.0",
    "id": 1,
    "method": "optimism_outputAtBlock",
    "params": [
      "0x7C664D5"
    ]
  }'