Returns true if an input account has a non-empty codeHash at the time of a specific block number. It returns false if the account is an EOA or a smart contract account which doesn't have codeHash.
Supported on Klaytn (mainnet) only.
Parameters
Request
| Name | Type | Description |
|---|---|---|
| account | 20-byte DATA | Address |
| block number or hash | QUANTITY | TAG | HASH | Integer or hexadecimal block number, or the string "earliest", "latest" or "pending" as in the default block parameter, or block hash. |
NOTE: In versions earlier than Klaytn v1.7.0, only integer block number, the string "earliest" and "latest" are available.
Result
| Type | Description |
|---|---|
| Boolean | true means the input parameter is an existing smart contract address. |
API Endpoint
The format of a Klaytn API endpoint is
https://open-platform.nodereal.io/{{apiKey}}/klaytn/
Here is an example:
https://open-platform.nodereal.io/4c0a1c23661a4e26bcbcwed461e34ea9/klaytn/
Example
// Request
curl https://open-platform.nodereal.io/{{apiKey}}/klaytn/ \
-X POST \
-H "Content-Type: application/json" \
--data '{"jsonrpc":"2.0","method":"klay_isContractAccount","params":["0x2f07d5b3fa1051460099dc9ea0c2975b6ea67776", "latest"],"id":1}'
// Result
{
"jsonrpc":"2.0",
"id":1,
"result":true
}