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Parameters

​
chainId
string
default:"starknet-sepolia"
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:"starknet_getClassHashAt"
required
JSON-RPC method name.
​
params
object
Parameters for method starknet_getClassHashAt: [block_id, contract_address]Parameters for starknet_getClassHashAt:
  • params.block_id: BlockID object containing hash and number.
  • params.contract_address: Address of the requested contract class.

​
Returns

​
result
string
The class hash of the requested contract class (DATA, 32 Bytes). Example: “0xabcdefabcdefabcdefabcdefabcdefabcdefabcdefabcdefabcdefabcdefabcdef”.
curl --request POST \
  --url https://api.uniblock.dev/uni/v1/json-rpc?chainId=starknet-sepolia \
  --header 'content-type: application/json' \
  --data '{
    "id": 1,
    "jsonrpc": "2.0",
    "method": "starknet_getClassHashAt",
    "params": {
      "block_id": {
        "block_hash": "0x041b10c45dc3f39372f7b9409261cac9d880c5d75a5bb077d028db20b1bd76c4"
      },
      "contract_address": "0x03b554093fb0a7460913be2d5c011cb5ac4333dfcfe6125851bcd3f926a3b558"
    }
  }'

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