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Parameters

​
chainId
string
default:"81457"
required
Unique identifier for a blockchain network.
​
id
number
default:1
required
Request identifier used to match responses.
​
jsonrpc
string
default:"2.0"
required
JSON-RPC version.
​
method
string
default:"optimism_outputAtBlock"
required
JSON-RPC method name.
​
params
object
required
Parameters for method optimism_outputAtBlock: [blockNumber]Positional parameters for optimism_outputAtBlock:
  • params[]: L2 integer block number (QUANTITY, 64 bits).

​
Returns

​
result
object
Response object from optimism_outputAtBlock method.
curl --request POST \
  --url https://api.uniblock.dev/uni/v1/json-rpc?chainId=81457 \
  --header 'content-type: application/json' \
  --data '{
    "id": 1,
    "jsonrpc": "2.0",
    "method": "optimism_outputAtBlock",
    "params": [
      "0x1a2b3c"
    ]
  }'

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": [
    "0x0000000000000000000000000000000000000000000000000000000000000000",
    "0xabe711e34c1387c8c56d0def8ce77e454d6a0bfd26cef2396626202238442421"
  ]
}