# Block

### The Default Block Parameter <a href="#the-default-block-parameter" id="the-default-block-parameter"></a>

Klaytn 상태 상에서 어떤 행위에 대한 요청이 있을 때 마지막의 기본 블록 매개변수가 블록의 번호를 결정합니다.

The following options are possible for the `defaultBlock` parameter:

* `HEX String` - an integer block number
* `String "earliest"` for the earliest/genesis block
* `String "latest"` - for the latest mined block
* `"pending" 문자열` - 보류 중인 상태/트랜잭션입니다.

### klay\_blockNumber <a href="#klay_blocknumber" id="klay_blocknumber"></a>

가장 최근의 블록 번호를 반환합니다.

**Parameters**

None

**Return Value**

| Type     | Description                                           |
| -------- | ----------------------------------------------------- |
| QUANTITY | Integer of the current block number the client is on. |

**Example**

```shell
// Request
curl -H "Content-Type: application/json" --data '{"jsonrpc":"2.0","method":"klay_blockNumber","params":[],"id":83}' https://public-en-baobab.klaytn.net

// Result
{
  "jsonrpc": "2.0",
  "id":83,
  "result": "0xc94"
}
```

### klay\_getHeaderByNumber <a href="#klay_getheaderbynumber" id="klay_getheaderbynumber"></a>

**참고**: 이 API는 Klaytn v1.7.0.부터 지원됩니다.

Returns information about a header by number. 이 API는 RPC 호출로만 작동하며 자바스크립트 콘솔을 통해서는 작동하지 않습니다.

**Parameters**

| Type            | Description                                                                                                                                                   |
| --------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| QUANTITY \| TAG | Integer or hexadecimal block number, or the string `"earliest"`, `"latest"` or `"pending"` as in the [default block parameter](#the-default-block-parameter). |

**Return Value**

[klay\_getBlockByHash](#klay_getheaderbyhash)를 참고하세요.

**Example**

```shell
// Request
curl -H "Content-Type: application/json" --data '{"jsonrpc":"2.0","method":"klay_getHeaderByNumber","params":["0x1b4"],"id":1}' https://public-en-baobab.klaytn.net
// Result
{
  "jsonrpc":"2.0",
  "id":1,
  "result":{
    "baseFeePerGas":"0x5d21dba00",
    "blockScore":"0x1",
    "extraData":"0xda83010800846b6c617989676f312e31362e31338664617277696e0000000000f89ed5949712f943b296758aaae79944ec975884188d3a96b841ddfdf7e2cb0a93538f757f87f23a93ee35df703c781c6f15e31e4978ecdfb3501fc00924372b9a01df2bc452f2a924c242d83580183d131c47e49a25b78f625201f843b841b9b6034d5a8c5f5b057274cda4f427614cd1f448ee781f4c4322861d1361d09d47d6030f2b69a26cb426db984f54e71f8c112fbf882930ccd715d595e8d8307500",
    "gasUsed":"0x0",
    "governanceData":"0x",
    "hash":"0xe882d7a16f38126dc0c507f990b3fe18fa2d3a380002538581327abe96ca6edc",
    "logsBloom":"0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
    "number":"0x1e67",
    "parentHash":"0x28b1c054346c3bd083741c757a750dcabf94b6d50c7f87158753544e96e73550",
    "receiptsRoot":"0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470",
    "reward":"0x4b2c736fd05c2e2da3ccbd001a395a444f16a861",
    "stateRoot":"0xdf9885621c9e6e75912ca94d6987bcb1b54fef0e4a99cbec5e68f1ffc7468a78",
    "timestamp":"0x62130beb",
    "timestampFoS":"0x0",
    "transactionsRoot":"0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470"
  }

}
```

### klay\_getHeaderByHash <a href="#klay_getheaderbyhash" id="klay_getheaderbyhash"></a>

**NOTE**: This API is supported from Klaytn v1.7.0.

Returns information about a header by hash. This API works only on RPC call, not on JavaScript console.

**Parameters**

| Type         | Description |
| ------------ | ----------- |
| 32-byte DATA | 블록의 해시입니다.  |

**Return Value**

`객체` - 헤더 객체, 또는 블록이 없는 경우 `error`를 반환합니다.

| Name             | Type          | Description                                                                                                 |
| ---------------- | ------------- | ----------------------------------------------------------------------------------------------------------- |
| number           | QUANTITY      | The block number. `null` when it is pending block.                                                          |
| parentHash       | 32-byte DATA  | The hash of the parent block.                                                                               |
| logsBloom        | 256-byte DATA | The bloom filter for the logs of the block. `null` when it is pending block.                                |
| transactionsRoot | 32-byte DATA  | The root of the transaction trie of the block.                                                              |
| stateRoot        | 32-byte DATA  | The root of the final state trie of the block.                                                              |
| receiptsRoot     | 32-byte DATA  | The root of the receipts trie of the block.                                                                 |
| reward           | 20-byte DATA  | 블록 보상을 받을 수혜자의 주소입니다.                                                                                       |
| blockScore       | QUANTITY      | 이전 난이도입니다. BFT 합의 엔진에서는 항상 1입니다.                                                                            |
| extraData        | DATA          | The "extra data" field of this block.                                                                       |
| gasUsed          | QUANTITY      | The total used gas by all transactions in this block.                                                       |
| timestamp        | QUANTITY      | The Unix timestamp for when the block was collated.                                                         |
| timestampFoS     | QUANTITY      | 블록이 생성되었을 때의 타임스탬프 중 초 단위 부분입니다.                                                                            |
| governanceData   | DATA          | RLP 인코딩된 거버넌스 설정입니다.                                                                                        |
| voteData         | DATA          | 제안자의 RLP 인코딩된 거버넌스 투표입니다.                                                                                   |
| baseFeePerGas    | QUANTITY      | The base fee per gas. It has a meaningful value when EthTxTypeCompatible and Magma hardforks are activated. |

**Example**

```shell
// Request
curl -H "Content-Type: application/json" --data '{"jsonrpc":"2.0","method":"klay_getHeaderByHash","params":["0xb8deae63002d2b6aa33247c8ef545383ee0fd2282ac9b49dbbb74114389ddb5c"],"id":1}' https://public-en-baobab.klaytn.net
// Result
{
  "jsonrpc":"2.0",
  "id":1,
  "result":{
    "baseFeePerGas":"0x5d21dba00",
    "blockScore":"0x1",
    "extraData":"0xda83010800846b6c617989676f312e31362e31338664617277696e0000000000f89ed5949712f943b296758aaae79944ec975884188d3a96b841ddfdf7e2cb0a93538f757f87f23a93ee35df703c781c6f15e31e4978ecdfb3501fc00924372b9a01df2bc452f2a924c242d83580183d131c47e49a25b78f625201f843b841b9b6034d5a8c5f5b057274cda4f427614cd1f448ee781f4c4322861d1361d09d47d6030f2b69a26cb426db984f54e71f8c112fbf882930ccd715d595e8d8307500",
    "gasUsed":"0x0",
    "governanceData":"0x",
    "hash":"0xe882d7a16f38126dc0c507f990b3fe18fa2d3a380002538581327abe96ca6edc",
    "logsBloom":"0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
    "number":"0x1e67",
    "parentHash":"0x28b1c054346c3bd083741c757a750dcabf94b6d50c7f87158753544e96e73550",
    "receiptsRoot":"0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470",
    "reward":"0x4b2c736fd05c2e2da3ccbd001a395a444f16a861",
    "stateRoot":"0xdf9885621c9e6e75912ca94d6987bcb1b54fef0e4a99cbec5e68f1ffc7468a78",
    "timestamp":"0x62130beb",
    "timestampFoS":"0x0",
    "transactionsRoot":"0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470"
  }

}
```

### klay\_getBlockByNumber <a href="#klay_getblockbynumber" id="klay_getblockbynumber"></a>

Returns information about a block by block number. This API works only on RPC call, not on JavaScript console.

**Parameters**

| Type            | Description                                                                                                                                                   |
| --------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| QUANTITY \| TAG | Integer or hexadecimal block number, or the string `"earliest"`, `"latest"` or `"pending"` as in the [default block parameter](#the-default-block-parameter). |
| Boolean         | If `true` it returns the full transaction objects, if `false` only the hashes of the transactions.                                                            |

{% hint style="success" %}
NOTE: In versions earlier than Klaytn v1.7.0, only integer block number, the string `"earliest"` and `"latest"` are available.
{% endhint %}

**Return Value**

See [klay\_getBlockByHash](#klay_getblockbyhash)

**Example**

```shell
// Request
curl -H "Content-Type: application/json" --data '{"jsonrpc":"2.0","method":"klay_getBlockByNumber","params":["0x1b4", true],"id":1}' https://public-en-baobab.klaytn.net

// Result
{
  "jsonrpc":"2.0",
  "id":1,
  "result":{
    "baseFeePerGas":"0x5d21dba00",
    "blockscore":"0x1",
    "extraData":"0xda83010800846b6c617989676f312e31362e31338664617277696e0000000000f89ed5949712f943b296758aaae79944ec975884188d3a96b841ddfdf7e2cb0a93538f757f87f23a93ee35df703c781c6f15e31e4978ecdfb3501fc00924372b9a01df2bc452f2a924c242d83580183d131c47e49a25b78f625201f843b841b9b6034d5a8c5f5b057274cda4f427614cd1f448ee781f4c4322861d1361d09d47d6030f2b69a26cb426db984f54e71f8c112fbf882930ccd715d595e8d8307500",
    "gasUsed":"0x0",
    "governanceData":"0x",
    "hash":"0xe882d7a16f38126dc0c507f990b3fe18fa2d3a380002538581327abe96ca6edc",
    "logsBloom":"0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
    "number":"0x1e67",
    "parentHash":"0x28b1c054346c3bd083741c757a750dcabf94b6d50c7f87158753544e96e73550",
    "receiptsRoot":"0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470",
    "reward":"0x4b2c736fd05c2e2da3ccbd001a395a444f16a861",
    "size":"0x272",
    "stateRoot":"0xdf9885621c9e6e75912ca94d6987bcb1b54fef0e4a99cbec5e68f1ffc7468a78",
    "timestamp":"0x62130beb",
    "timestampFoS":"0x0",
    "totalBlockScore":"0x1e68",
    "transactions":[],
    "transactionsRoot":"0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470",
    "voteData":"0x"
  }
}
```

### klay\_getBlockByHash <a href="#klay_getblockbyhash" id="klay_getblockbyhash"></a>

Returns information about a block by hash. This API works only on RPC call, not on JavaScript console.

**Parameters**

| Type         | Description                                                                                        |
| ------------ | -------------------------------------------------------------------------------------------------- |
| 32-byte DATA | Hash of a block.                                                                                   |
| Boolean      | If `true` it returns the full transaction objects, if `false` only the hashes of the transactions. |

**Return Value**

`Object` - A block object, or `error` when no block was found:

| Name             | Type          | Description                                                                                                 |
| ---------------- | ------------- | ----------------------------------------------------------------------------------------------------------- |
| number           | QUANTITY      | The block number. `null` when it is pending block.                                                          |
| hash             | 32-byte DATA  | Hash of the block. `null` when it is pending block.                                                         |
| parentHash       | 32-byte DATA  | Hash of the parent block.                                                                                   |
| logsBloom        | 256-byte DATA | The bloom filter for the logs of the block. `null` when it is pending block.                                |
| transactionsRoot | 32-byte DATA  | The root of the transaction trie of the block.                                                              |
| stateRoot        | 32-byte DATA  | The root of the final state trie of the block.                                                              |
| receiptsRoot     | 32-byte DATA  | The root of the receipts trie of the block.                                                                 |
| reward           | 20-byte DATA  | The address of the beneficiary to whom the block rewards were given.                                        |
| blockScore       | QUANTITY      | Former difficulty. Always 1 in the BFT consensus engine                                                     |
| totalBlockScore  | QUANTITY      | 본 블록까지 체인 내 모든 블록의 blockScore 값의 합입니다.                                                                      |
| extraData        | DATA          | The "extra data" field of this block.                                                                       |
| size             | QUANTITY      | 블록의 바이트 크기의 정수 형태입니다.                                                                                       |
| gasUsed          | QUANTITY      | The total used gas by all transactions in this block.                                                       |
| timestamp        | QUANTITY      | The Unix timestamp for when the block was collated.                                                         |
| timestampFoS     | QUANTITY      | The fraction of a second of the timestamp for when the block was collated.                                  |
| transactions     | Array         | Array of transaction objects, or 32-byte transaction hashes depending on the last given parameter.          |
| governanceData   | DATA          | RLP encoded governance configuration                                                                        |
| voteData         | DATA          | RLP encoded governance vote of the proposer                                                                 |
| baseFeePerGas    | QUANTITY      | The base fee per gas. It has a meaningful value when EthTxTypeCompatible and Magma hardforks are activated. |

**Example**

```shell
// Request
curl -H "Content-Type: application/json" --data '{"jsonrpc":"2.0","method":"klay_getBlockByHash","params":["0xb8deae63002d2b6aa33247c8ef545383ee0fd2282ac9b49dbbb74114389ddb5c", true],"id":1}' https://public-en-baobab.klaytn.net

// Result
{
  "jsonrpc":"2.0",
  "id":1,
  "result":{
    "baseFeePerGas":"0x0",
    "blockscore":"0x1",
    "extraData":"0xda83010800846b6c617989676f312e31362e31338664617277696e0000000000f89ed5949712f943b296758aaae79944ec975884188d3a96b841ddfdf7e2cb0a93538f757f87f23a93ee35df703c781c6f15e31e4978ecdfb3501fc00924372b9a01df2bc452f2a924c242d83580183d131c47e49a25b78f625201f843b841b9b6034d5a8c5f5b057274cda4f427614cd1f448ee781f4c4322861d1361d09d47d6030f2b69a26cb426db984f54e71f8c112fbf882930ccd715d595e8d8307500",
    "gasUsed":"0x0",
    "governanceData":"0x",
    "hash":"0xe882d7a16f38126dc0c507f990b3fe18fa2d3a380002538581327abe96ca6edc",
    "logsBloom":"0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
    "number":"0x1e67",
    "parentHash":"0x28b1c054346c3bd083741c757a750dcabf94b6d50c7f87158753544e96e73550",
    "receiptsRoot":"0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470",
    "reward":"0x4b2c736fd05c2e2da3ccbd001a395a444f16a861",
    "size":"0x272",
    "stateRoot":"0xdf9885621c9e6e75912ca94d6987bcb1b54fef0e4a99cbec5e68f1ffc7468a78",
    "timestamp":"0x62130beb",
    "timestampFoS":"0x0",
    "totalBlockScore":"0x1e68",
    "transactions":[],
    "transactionsRoot":"0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470",
    "voteData":"0x"
  }
}
```

### klay\_getBlockReceipts <a href="#klay_getblockreceipts" id="klay_getblockreceipts"></a>

Returns receipts included in a block identified by block hash.

**Parameters**

| Type         | Description |
| ------------ | ----------- |
| 32-byte DATA | Block hash  |

**Return Value**

Receipts included in a block. If the target block contains no transaction, an empty array `[]` is returned.

**Example**

```shell
// Request
curl -X POST -H "Content-Type: application/json" --data '{"jsonrpc":"2.0", "method":"klay_getBlockReceipts", "params":["0xdc762ed0274496e2a42278e2648d910d82468687b5415bb5eb058a96a0b93c30"],"id":73}' https://public-en-baobab.klaytn.net

// Result
{
  "jsonrpc":"2.0",
  "id":73,
  "result":[{
    "blockHash":"0xdc762ed0274496e2a42278e2648d910d82468687b5415bb5eb058a96a0b93c30",
    "blockNumber":"0x3ba38",
    "contractAddress":null,
    "effectiveGasPrice":"0x5d21dba00",
    "from":"0x16b11cf9c2186a117b0da38315b42b1eaa03bbe5",
    "gas":"0x30d40",
    "gasPrice":"0xba43b7400",
    "gasUsed":"0x1886c",
    "logs":[],
    "logsBloom":"0x00000000000000000000000000000000008000000000000000000000000000080000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000080000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000004000000000000040000080000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
    "nonce":"0x58e",
    "senderTxHash":"0x234469b3d3222657c98904deaba7ec6613161ea9405275025f4784a4d9918af5",
    "signatures":["0x7f6","0x50b2b0f95b8a6d7018369b1933d6cebb52ef119463d1840a6181d05bf8fc29d8","0x329630f88d9d06c5f1bd7644dbf6bd6b92e4ab0e3d47122972f8294c9289e7bb"],
    "status":"0x1",
    "to":"0xdbb98c72e9818ad2c93a09e35ad43ada0d4223f0",
    "transactionHash":"0x234469b3d3222657c98904deaba7ec6613161ea9405275025f4784a4d9918af5",
    "transactionIndex":"0x0",
    "type":"TxTypeValueTransfer",
    "typeInt":8,
    "value":"0x21e19e0c9bab2400000"
  }
}
```

### klay\_getBlockTransactionCountByNumber <a href="#klay_getblocktransactioncountbynumber" id="klay_getblocktransactioncountbynumber"></a>

Returns the number of transactions in a block matching the given block number.

**Parameters**

| Type            | Description                                                                                                                                      |
| --------------- | ------------------------------------------------------------------------------------------------------------------------------------------------ |
| QUANTITY \| TAG | 정수 형태의 블록 번호 또는 `"earliest"`, `"latest"`, `"pending"`과 같이 상태를 나타내는 문자열입니다. 이 매개변수에 대한 자세한 설명은 [기본 블록 매개변수](#the-default-block-parameter)를 참고하세요. |

{% hint style="success" %}
NOTE: In versions earlier than Klaytn v1.7.0, only integer block number, the string `"earliest"` and `"latest"` are available.
{% endhint %}

**Return Value**

| Type     | Description                                          |
| -------- | ---------------------------------------------------- |
| QUANTITY | Integer of the number of transactions in this block. |

**Example**

```shell
// Request
curl -H "Content-Type: application/json" --data '{"jsonrpc":"2.0","method":"klay_getBlockTransactionCountByNumber","params":["0xe8"],"id":1}' https://public-en-baobab.klaytn.net

// Result
{
  "jsonrpc": "2.0",
  "id":1,
  "result": "0xa" // 10
}
```

### klay\_getBlockTransactionCountByHash <a href="#klay_getblocktransactioncountbyhash" id="klay_getblocktransactioncountbyhash"></a>

Returns the number of transactions in a block from a block that matches the given hash.

**Parameters**

| Type         | Description     |
| ------------ | --------------- |
| 32-byte DATA | Hash of a block |

**Return Value**

| Type     | Description                                          |
| -------- | ---------------------------------------------------- |
| QUANTITY | Integer of the number of transactions in this block. |

**Example**

```shell
// Request
curl -H "Content-Type: application/json" --data '{"jsonrpc":"2.0","method":"klay_getBlockTransactionCountByHash","params":["0x0c11803ab36110db993e7520908b9ba9336cca2f2dcc9b6130c481a3ccdc2621"],"id":1}' https://public-en-baobab.klaytn.net

// Result
{
  "jsonrpc": "2.0",
  "id":1,
  "result": "0x0"
}
```

### klay\_getBlockWithConsensusInfoByNumber <a href="#klay_getblockwithconsensusinfobynumber" id="klay_getblockwithconsensusinfobynumber"></a>

Returns a block with consensus information that matches the given block number.

**Parameters**

| Type            | Description                                                                                                                                      |
| --------------- | ------------------------------------------------------------------------------------------------------------------------------------------------ |
| QUANTITY \| TAG | Integer or hexadecimal block number, or the string `"earliest"` or `"latest"` as in the [default block parameter](#the-default-block-parameter). |

{% hint style="success" %}
NOTE: In versions earlier than Klaytn v1.7.0, only integer block number, the string `"earliest"` and `"latest"` are available.
{% endhint %}

**Return Value**

See [klay\_getBlockWithConsensusInfoByHash](#klay_getblockwithconsensusinfobyhash)

**Example**

```shell
// Request
curl -X POST -H "Content-Type: application/json" --data '{"jsonrpc":"2.0", "method":"klay_getBlockWithConsensusInfoByNumber", "params":["0x6e0431"],"id":73}' https://public-en-baobab.klaytn.net

// Result
{
  "jsonrpc": "2.0",
  "id": 73,
  "result": {
    "baseFeePerGas":"0x5d21dba00",
    "blockscore": "0x1",
    "committee": ["0xe783fc94fddaeebef7293d6c5864cff280f121e1", "0x8a88a093c05376886754a9b70b0d0a826a5e64be", "0xf113ec8c22765d485309cf1d025d1b975245b9f8", "0xe3d92072d8b9a59a0427485a1b5f459271df457c", "0xa2ba8f7798649a778a1fd66d3035904949fec555", "0x2bdd279522b8a0843831fbb94cfbb24a913597c5", "0x9419fa2e3b9eb1158de31be66c586a52f49c5de7", "0xc032c34cb9fe064fe435199e1078dd8756a166b5", "0x56e8c1463c341abf8b168c3079ea41ce8a387e18", "0x6873352021fe9226884616dc6f189f289aeb0cc5", "0xe93a890fb7ec5e993b1a7fd77b0d13a0763eff3d", "0xbca8ffa45cc8e30bbc0522cdf1a1e0ebf540dfe2", "0x386ca3cb8bb13f48d1a6adc1fb8df09e7bb7f9c8", "0x1782834bf8847e235f21f2c1f13fca4d5dff6621", "0x6f6770f1f67f44fb15b335b49581ad6b935d963a", "0x0b59cae1f03534209fdb9ddf5ea65b310cd7060c", "0xb9456fd65a6810b19df24832c50b2e61a41867f8", "0x16c192585a0ab24b552783b4bf7d8dc9f6855c35", "0xec6c1cede510be308f0fdbbc8dbdf238829bdb34", "0xf8c9c61c5e7f2b6219d1c28b94e5cb3cdc802594", "0x5e59db28cef098d5a2e877f84127aed10d7378f2", "0x52d41ca72af615a1ac3301b0a93efa222ecc7541"],
    "extraData": "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",
    "gasUsed": "0x1d065",
    "governanceData": "0x",
    "hash": "0x7d68d09a7a571cdf8a3b6a5ef6e037265b3e3093cf145b0954d22bde5c1d4f61",
    "logsBloom": "0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
    "number": "0x6e0431",
    "parentHash": "0xa76ef625874a4d2126eb3fd1ebb5c1a8d0deb360a12b4f8edf30fb417d82b5a1",
    "proposer": "0xe783fc94fddaeebef7293d6c5864cff280f121e1",
    "receiptsRoot": "0x56734b337c3daab6766104bb51bd2ca408cf4537f5528ab3362536c57e65ba67",
    "reward": "0x79f83dbb81f6f706be3e8491b14790c30d03e659",
    "size": "0x947",
    "stateRoot": "0xf685dce2cbef004cb041cf23959aea65e8aa86911fac55739ae1971f7d1dacd4",
    "timestamp": "0x5d801768",
    "timestampFoS": "0x4",
    "totalBlockScore": "0x6e0432",
    "transactions": [
      {
        "blockHash": "0x7d68d09a7a571cdf8a3b6a5ef6e037265b3e3093cf145b0954d22bde5c1d4f61",
        "blockNumber": "0x6e0431",
        "contractAddress": null,
        "feePayer": "0x08260736c18bd8612bee2b21beedf4e97c0bc6b9",
        "feePayerSignatures": [
          {
            "V": "0x4055",
            "R": "0xd3fdd58e18e5a96d1f9af3d1aff31601d8e543a8085c78edfc8602db4c91b3c6",
            "S": "0x19d937e315472a188f11a6bb87f47e66a30b44ba907b5f01fcd47dab8d99f3f0"
          }
        ],
        "from": "0x84b605b268e89ccdf591974db82deaa48bce59dc",
        "gas": "0x419ce0",
        "gasPrice": "0x5d21dba00",
        "gasUsed": "0x1d065",
        "input": "0x50716652000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000000000000000000000000000000000013416c50000000000000000000000000000000000000000000000000000000000001f3f000000000000000000000000000000000000000000000000000000003b9af23c",
        "logs": [],
        "logsBloom": "0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
        "nonce": "0x8",
        "senderTxHash": "0x5fe7485db56c0c2b0eb54dd46e584a413193ad66b40e69281f44dadfa7409b2e",
        "signatures": [
          {
            "V": "0x4056",
            "R": "0xca32239c38e1080f3a394504e2a0bb9811cda0a87d25b750cbbab265d581074d",
            "S": "0x584ab136a483e755d9d458f9965ca0d514724c7b45f6123d19323f6fa7ccdb5f"
          }
        ],
        "status": "0x1",
        "to": "0x1db1b93447328dd904152f798ead97987844f7b7",
        "transactionHash": "0x020a2156bb4b29dc84f26887efae79e07a3d738b2856a66bbaab8aee18d507b5",
        "transactionIndex": "0x0",
        "type": "TxTypeFeeDelegatedSmartContractExecution",
        "typeInt": 49,
        "value": "0x0"
      }
    ],
    "transactionsRoot": "0x020a2156bb4b29dc84f26887efae79e07a3d738b2856a66bbaab8aee18d507b5",
    "voteData": "0x"
  }
}
```

### klay\_getBlockWithConsensusInfoByHash <a href="#klay_getblockwithconsensusinfobyhash" id="klay_getblockwithconsensusinfobyhash"></a>

Returns a block with consensus information that matches the given hash.

**Parameters**

| Type         | Description      |
| ------------ | ---------------- |
| 32-byte DATA | Hash of a block. |

**Return Value**

`Object` - A block object with consensus information (a proposer and a list of committee members), or `error` when no block was found:

| Name             | Type         | Description                                                                                                                                           |
| ---------------- | ------------ | ----------------------------------------------------------------------------------------------------------------------------------------------------- |
| blockScore       | QUANTITY     | Former difficulty. Always 1 in the BFT consensus engine                                                                                               |
| totalBlockScore  | QUANTITY     | Integer of the total blockScore of the chain until this block.                                                                                        |
| committee        | Array        | Array of addresses of committee members of this block. The committee is a subset of validators participated in the consensus protocol for this block. |
| gasUsed          | QUANTITY     | The total used gas by all transactions in this block.                                                                                                 |
| hash             | 32-byte DATA | Hash of the block. `null` when it is pending block.                                                                                                   |
| number           | QUANTITY     | The block number. `null` when it is pending block.                                                                                                    |
| parentHash       | 32-byte DATA | Hash of the parent block.                                                                                                                             |
| proposer         | 20-byte DATA | The address of the block proposer.                                                                                                                    |
| receiptsRoot     | 32-byte DATA | The root of the receipts trie of the block.                                                                                                           |
| size             | QUANTITY     | Integer the size of this block in bytes.                                                                                                              |
| stateRoot        | 32-byte DATA | The root of the final state trie of the block.                                                                                                        |
| timestamp        | QUANTITY     | The Unix timestamp for when the block was collated.                                                                                                   |
| timestampFoS     | QUANTITY     | The fraction of a second of the timestamp for when the block was collated.                                                                            |
| transactions     | Array        | Array of transaction objects.                                                                                                                         |
| transactionsRoot | 32-byte DATA | The root of the transaction trie of the block.                                                                                                        |
| baseFeePerGas    | QUANTITY     | The base fee per gas. It has a meaningful value when EthTxTypeCompatible and Magma hardforks are activated.                                           |

**Example**

```shell
// Request
curl -X POST -H "Content-Type: application/json" --data '{"jsonrpc":"2.0", "method":"klay_getBlockWithConsensusInfoByHash", "params":["0x7d68d09a7a571cdf8a3b6a5ef6e037265b3e3093cf145b0954d22bde5c1d4f61"],"id":73}' https://public-en-baobab.klaytn.net

// Result
{
  "jsonrpc": "2.0",
  "id": 73,
  "result": {
    "baseFeePerGas":"0x5d21dba00",
    "blockscore": "0x1",
    "committee": ["0xe783fc94fddaeebef7293d6c5864cff280f121e1", "0x8a88a093c05376886754a9b70b0d0a826a5e64be", "0xf113ec8c22765d485309cf1d025d1b975245b9f8", "0xe3d92072d8b9a59a0427485a1b5f459271df457c", "0xa2ba8f7798649a778a1fd66d3035904949fec555", "0x2bdd279522b8a0843831fbb94cfbb24a913597c5", "0x9419fa2e3b9eb1158de31be66c586a52f49c5de7", "0xc032c34cb9fe064fe435199e1078dd8756a166b5", "0x56e8c1463c341abf8b168c3079ea41ce8a387e18", "0x6873352021fe9226884616dc6f189f289aeb0cc5", "0xe93a890fb7ec5e993b1a7fd77b0d13a0763eff3d", "0xbca8ffa45cc8e30bbc0522cdf1a1e0ebf540dfe2", "0x386ca3cb8bb13f48d1a6adc1fb8df09e7bb7f9c8", "0x1782834bf8847e235f21f2c1f13fca4d5dff6621", "0x6f6770f1f67f44fb15b335b49581ad6b935d963a", "0x0b59cae1f03534209fdb9ddf5ea65b310cd7060c", "0xb9456fd65a6810b19df24832c50b2e61a41867f8", "0x16c192585a0ab24b552783b4bf7d8dc9f6855c35", "0xec6c1cede510be308f0fdbbc8dbdf238829bdb34", "0xf8c9c61c5e7f2b6219d1c28b94e5cb3cdc802594", "0x5e59db28cef098d5a2e877f84127aed10d7378f2", "0x52d41ca72af615a1ac3301b0a93efa222ecc7541"],
    "extraData": "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",
    "gasUsed": "0x1d065",
    "governanceData": "0x",
    "hash": "0x7d68d09a7a571cdf8a3b6a5ef6e037265b3e3093cf145b0954d22bde5c1d4f61",
    "logsBloom": "0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
    "number": "0x6e0431",
    "parentHash": "0xa76ef625874a4d2126eb3fd1ebb5c1a8d0deb360a12b4f8edf30fb417d82b5a1",
    "proposer": "0xe783fc94fddaeebef7293d6c5864cff280f121e1",
    "receiptsRoot": "0x56734b337c3daab6766104bb51bd2ca408cf4537f5528ab3362536c57e65ba67",
    "reward": "0x79f83dbb81f6f706be3e8491b14790c30d03e659",
    "size": "0x947",
    "stateRoot": "0xf685dce2cbef004cb041cf23959aea65e8aa86911fac55739ae1971f7d1dacd4",
    "timestamp": "0x5d801768",
    "timestampFoS": "0x4",
    "totalBlockScore": "0x6e0432",
    "transactions": [
      {
        "blockHash": "0x7d68d09a7a571cdf8a3b6a5ef6e037265b3e3093cf145b0954d22bde5c1d4f61",
        "blockNumber": "0x6e0431",
        "contractAddress": null,
        "feePayer": "0x08260736c18bd8612bee2b21beedf4e97c0bc6b9",
        "feePayerSignatures": [
          {
            "V": "0x4055",
            "R": "0xd3fdd58e18e5a96d1f9af3d1aff31601d8e543a8085c78edfc8602db4c91b3c6",
            "S": "0x19d937e315472a188f11a6bb87f47e66a30b44ba907b5f01fcd47dab8d99f3f0"
          }
        ],
        "from": "0x84b605b268e89ccdf591974db82deaa48bce59dc",
        "gas": "0x419ce0",
        "gasPrice": "0x5d21dba00",
        "gasUsed": "0x1d065",
        "input": "0x50716652000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000000000000000000000000000000000013416c50000000000000000000000000000000000000000000000000000000000001f3f000000000000000000000000000000000000000000000000000000003b9af23c",
        "logs": [],
        "logsBloom": "0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
        "nonce": "0x8",
        "senderTxHash": "0x5fe7485db56c0c2b0eb54dd46e584a413193ad66b40e69281f44dadfa7409b2e",
        "signatures": [
          {
            "V": "0x4056",
            "R": "0xca32239c38e1080f3a394504e2a0bb9811cda0a87d25b750cbbab265d581074d",
            "S": "0x584ab136a483e755d9d458f9965ca0d514724c7b45f6123d19323f6fa7ccdb5f"
          }
        ],
        "status": "0x1",
        "to": "0x1db1b93447328dd904152f798ead97987844f7b7",
        "transactionHash": "0x020a2156bb4b29dc84f26887efae79e07a3d738b2856a66bbaab8aee18d507b5",
        "transactionIndex": "0x0",
        "type": "TxTypeFeeDelegatedSmartContractExecution",
        "typeInt": 49,
        "value": "0x0"
      }
    ],
    "transactionsRoot": "0x020a2156bb4b29dc84f26887efae79e07a3d738b2856a66bbaab8aee18d507b5",
    "voteData": "0x"
  }
}
```

### klay\_getCommittee <a href="#klay_getcommittee" id="klay_getcommittee"></a>

Returns a list of all validators in the committee at the specified block. If the parameter is not set, returns a list of all validators in the committee at the latest block.

**Parameters**

| Name            | Type         | Description                                                                                                                                                 |
| --------------- | ------------ | ----------------------------------------------------------------------------------------------------------------------------------------------------------- |
| QUANTITY \| TAG | block number | (optional) Integer or hexadecimal block number, or the string `"earliest"` or `"latest"` as in the [default block parameter](#the-default-block-parameter). |

{% hint style="success" %}
NOTE: In versions earlier than Klaytn v1.7.0, only integer block number, the string `"earliest"` and `"latest"` are available.
{% endhint %}

**Return Value**

`Array` - Array of addresses of all validators in the committee, or `null` when no committee was found:

| Type                  | Description                                   |
| --------------------- | --------------------------------------------- |
| Array of 20-byte DATA | Addresses of all validators in the committee. |

**Example**

```shell
// Request
curl -X POST -H "Content-Type: application/json" --data '{"jsonrpc":"2.0", "method":"klay_getCommittee", "params":["0x1b4"],"id":73}' https://public-en-baobab.klaytn.net
// Result
{
    "jsonrpc":"2.0",
    "id":73,
    "result":[
        "0x207e38864b45a538733741dc1ff92eff9d1a6159",
        "0x6d64bc82b93368a7f963d6c34483ca3893f405f6",
        "0xbc9c19f91878369776812039e4ebcdfa3c646716",
        "0xe3ed6fa287752b992f936b42360770c59731d9eb"
    ]
}
```

### klay\_getCommitteeSize <a href="#klay_getcommitteesize" id="klay_getcommitteesize"></a>

Returns the size of the committee at the specified block. If the parameter is not set, returns the size of the committee at the latest block.

**Parameters**

| Name            | Type         | Description                                                                                                                                                 |
| --------------- | ------------ | ----------------------------------------------------------------------------------------------------------------------------------------------------------- |
| QUANTITY \| TAG | block number | (optional) Integer or hexadecimal block number, or the string `"earliest"` or `"latest"` as in the [default block parameter](#the-default-block-parameter). |

{% hint style="success" %}
NOTE: In versions earlier than Klaytn v1.7.0, only integer block number, the string `"earliest"` and `"latest"` are available.
{% endhint %}

**Return Value**

`Integer` - The size of the committee, or `-1` when no committee was found:

| Type     | Description             |
| -------- | ----------------------- |
| QUANTITY | The size of the council |

**Example**

```shell
// Request
curl -X POST -H "Content-Type: application/json" --data '{"jsonrpc":"2.0", "method":"klay_getCommitteeSize", "params":["0x1b4"],"id":73}' https://public-en-baobab.klaytn.net
// Result
{
    "jsonrpc":"2.0",
    "id":73,
    "result":4
}
```

### klay\_getCouncil <a href="#klay_getcouncil" id="klay_getcouncil"></a>

Returns a list of all validators of the council at the specified block. If the parameter is not set, returns a list of all validators of the council at the latest block.

**NOTE**: `klay_getValidators` is replaced with this method and is not supported anymore.

**Parameters**

| Name            | Type         | Description                                                                                                                                                 |
| --------------- | ------------ | ----------------------------------------------------------------------------------------------------------------------------------------------------------- |
| QUANTITY \| TAG | block number | (optional) Integer or hexadecimal block number, or the string `"earliest"` or `"latest"` as in the [default block parameter](#the-default-block-parameter). |

{% hint style="success" %}
NOTE: In versions earlier than Klaytn v1.7.0, only integer block number, the string `"earliest"` and `"latest"` are available.
{% endhint %}

**Return Value**

`Array` - Array of validator addresses of the council, or `null` when no council was found:

| Type                  | Description                                 |
| --------------------- | ------------------------------------------- |
| Array of 20-byte DATA | Addresses of all validators of the council. |

**Example**

```shell
// Request
curl -X POST -H "Content-Type: application/json" --data '{"jsonrpc":"2.0", "method":"klay_getCouncil", "params":["0x1b4"],"id":73}' https://public-en-baobab.klaytn.net
// Result
{
    "jsonrpc":"2.0",
    "id":73,
    "result":[
        "0x207e38864b45a538733741dc1ff92eff9d1a6159",
        "0x6d64bc82b93368a7f963d6c34483ca3893f405f6",
        "0xbc9c19f91878369776812039e4ebcdfa3c646716",
        "0xe3ed6fa287752b992f936b42360770c59731d9eb"
    ]
}
```

### klay\_getCouncilSize <a href="#klay_getcouncilsize" id="klay_getcouncilsize"></a>

Returns the size of the council at the specified block. If the parameter is not set, returns the size of the council at the latest block.

**Parameters**

| Name            | Type         | Description                                                                                                                                                 |
| --------------- | ------------ | ----------------------------------------------------------------------------------------------------------------------------------------------------------- |
| QUANTITY \| TAG | block number | (optional) Integer or hexadecimal block number, or the string `"earliest"` or `"latest"` as in the [default block parameter](#the-default-block-parameter). |

{% hint style="success" %}
NOTE: In versions earlier than Klaytn v1.7.0, only integer block number, the string `"earliest"` and `"latest"` are available.
{% endhint %}

**Return Value**

`Integer` - The size of the council, or `-1` when no council was found:

| Type     | Description             |
| -------- | ----------------------- |
| QUANTITY | The size of the council |

**Example**

```shell
// Request
curl -X POST -H "Content-Type: application/json" --data '{"jsonrpc":"2.0", "method":"klay_getCouncilSize", "params":["0x1b4"],"id":73}' https://public-en-baobab.klaytn.net
// Result
{
    "jsonrpc":"2.0",
    "id":73,
    "result": 4
}
```

### klay\_getStorageAt <a href="#klay_getstorageat" id="klay_getstorageat"></a>

Returns the value from a storage position at a given address.

**Parameters**

| Type                    | Description                                                                                                                                                                  |
| ----------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| 20-byte DATA            | Address of the storage.                                                                                                                                                      |
| QUANTITY                | Integer of the position in the storage.                                                                                                                                      |
| QUANTITY \| TAG \| HASH | Integer or hexadecimal block number, or the string `"earliest"`, `"latest"` or `"pending"` as in the [default block parameter](#the-default-block-parameter), or block hash. |

{% hint style="success" %}
NOTE: In versions earlier than Klaytn v1.7.0, only integer block number, the string `"earliest"` and `"latest"` are available.
{% endhint %}

**Return Value**

| Type | Description                         |
| ---- | ----------------------------------- |
| DATA | The value at this storage position. |

**Example**

Calculating the correct position depends on the storage to retrieve. Consider the following contract deployed at `0x295a70b2de5e3953354a6a8344e616ed314d7251` by address `0x391694e7e0b0cce554cb130d723a9d27458f9298`.

```
contract Storage {
    uint pos0;
    mapping(address => uint) pos1;

    function Storage() {
        pos0 = 1234;
        pos1[msg.sender] = 5678;
    }
}
```

Retrieving the value of `pos0` is straight forward:

```shell
curl -H "Content-Type: application/json" --data '{"jsonrpc":"2.0", "method": "klay_getStorageAt", "params": ["0x295a70b2de5e3953354a6a8344e616ed314d7251", "0x0", "latest"], "id": 1}' https://public-en-baobab.klaytn.net

{"jsonrpc":"2.0","id":1,"result":"0x00000000000000000000000000000000000000000000000000000000000004d2"}
```

Retrieving an element of the map is harder. The position of an element in the map is calculated with:

```javascript
keccak(LeftPad32(key, 0), LeftPad32(map position, 0))
```

This means to retrieve the storage on `pos1["0x391694e7e0b0cce554cb130d723a9d27458f9298"]` we need to calculate the position with:

```javascript
keccak(decodeHex("000000000000000000000000391694e7e0b0cce554cb130d723a9d27458f9298" + "0000000000000000000000000000000000000000000000000000000000000001"))
```

The Klaytn console which comes with the `klay` library can be used to make the calculation

```javascript
> var key = "000000000000000000000000391694e7e0b0cce554cb130d723a9d27458f9298" + "0000000000000000000000000000000000000000000000000000000000000001"
undefined
> klay.sha3(key, {"encoding": "hex"})
"0x6661e9d6d8b923d5bbaab1b96e1dd51ff6ea2a93520fdc9eb75d059238b8c5e9"
```

Now to fetch the storage:

```shell
curl -H "Content-Type: application/json" --data '{"jsonrpc":"2.0", "method": "klay_getStorageAt", "params": ["0x295a70b2de5e3953354a6a8344e616ed314d7251", "0x6661e9d6d8b923d5bbaab1b96e1dd51ff6ea2a93520fdc9eb75d059238b8c5e9", "latest"], "id": 1}' https://public-en-baobab.klaytn.net

{"jsonrpc":"2.0","id":1,"result":"0x000000000000000000000000000000000000000000000000000000000000162e"}
```

### klay\_syncing <a href="#klay_syncing" id="klay_syncing"></a>

Returns an object with data about the sync status or `false`.

**Parameters**

None

**Return Value**

`Object|Boolean`, an object with sync status data or `false` when not syncing:

| Name          | Type     | Description                                                                                                       |
| ------------- | -------- | ----------------------------------------------------------------------------------------------------------------- |
| startingBlock | QUANTITY | The block at which the import started (will only be reset, after the sync reached his head).                      |
| currentBlock  | QUANTITY | The current block, same as `klay_blockNumber`.                                                                    |
| highestBlock  | QUANTITY | The estimated highest block.                                                                                      |
| pulledStates  | QUANTITY | The number of state entries processed until now. If the sync mode is not "fast", zero is returned.                |
| knownStates   | QUANTITY | The number of known state entries that still need to be pulled. If the sync mode is not "fast", zero is returned. |

**Example**

```shell
// Request
curl -H "Content-Type: application/json" --data '{"jsonrpc":"2.0","method":"klay_syncing","params":[],"id":1}' https://public-en-baobab.klaytn.net

// Result
{
  "jsonrpc": "2.0",
  "id":1,
  "result": {
    "currentBlock":"0x3e31e",
    "highestBlock":"0x827eef",
    "knownStates":"0x0",
    "pulledStates":"0x0",
    "startingBlock":"0x0"
  }
}
// Or when not syncing
{
  "jsonrpc": "2.0",
  "id":1,
  "result": false
}
```

### klay\_getRewards <a href="#klay_getrewards" id="klay_getrewards"></a>

Returns the reward distribution result about a block by block number, including the rewardees and their shares. If the parameter is not set, it returns the reward distribution at the latest block.

**Parameters**

| Type            | Description  |
| --------------- | ------------ |
| QUANTITY \| TAG | block number |

**Return Value**

| Type | Description                |
| ---- | -------------------------- |
| JSON | Reward distribution result |

```shell
// Request
curl -H "Content-Type: application/json" --data '{"jsonrpc":"2.0", "method": "klay_getRewards", "params": ["0x1000"], "id": 1}' https://public-en-baobab.klaytn.net

// Result
{
  "jsonrpc": "2.0",
  "id": 1,
  "result": {
    "minted": 6400000000000000000,
    "totalFee": 0,
    "burntFee": 0,
    "proposer": 640000000000000000,
    "stakers": 2560000000000000000,
    "kgf": 2560000000000000000,
    "kir": 640000000000000000,
    "rewards": {
      "0x0000000000000000000000000000000000008000": 512000000000000000,
      "0x0000000000000000000000000000000000008001": 512000000000000000,
      "0x0000000000000000000000000000000000008002": 512000000000000000,
      "0x0000000000000000000000000000000000008003": 512000000000000000,
      "0x0000000000000000000000000000000000008004": 512000000000000000,
      "0x241dabb87a018fb582cacebcaf74490a6d421a03": 640000000000000000,
      "0x271b57742f6ed1478eb767361f5a92dad2fa048f": 640000000000000000,
      "0xcdf3df6ad5cfc142c1477503aae5c5b0afaa5ccb": 2560000000000000000
    }
  }
}
```


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://archive-ko.docs.klaytn.foundation/content/dapp/json-rpc/api-references/klay/block.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.