starknet_getClassHashAt

Returns the contract class hash of the specified contract class address in the specified block.

Parameters

• block_id: [Required] The block parameter object containing one of the following:
  • block_hash: (string) Block hash.
  • block_number: (integer) Decimal block number.
  • One of the string tags latest or pending.
• contract_address: (string) [Required] The address of the requested contract class.

Returns

The class hash of the requested contract class.

Example

Replace <YOUR-API-KEY> with an API key from your MetaMask Developer dashboard.

Request

• curl

curl https://starknet-mainnet.infura.io/v3/<YOUR-API-KEY> \
  -X POST \
  -H "Content-Type: application/json" \
  -d '{
    "jsonrpc": "2.0",
    "method": "starknet_getClassHashAt",
    "params": {
      "block_id": {
        "block_hash": "0x041b10c45dc3f39372f7b9409261cac9d880c5d75a5bb077d028db20b1bd76c4"
      },
      "contract_address": "0x03b554093fb0a7460913be2d5c011cb5ac4333dfcfe6125851bcd3f926a3b558"
    },
    "id": 0
  }'

Response

• JSON

{
  "jsonrpc": "2.0",
  "id": 0,
  "result": "0x515dd668a1798214e7ca9ec90c52e267229b8104fb296a90f20b6f70baaef53"
}