caver.rpc.klay

caver.rpc.klay는 klay 네임 스페이스를 가진 JSON-RPC API를 호출합니다.

caver.rpc.klay.accountCreated

caver.rpc.klay.accountCreated(address [, blockNumber] [, callback])

입력된 주소의 계정이 Klaytn 블록체인 플랫폼(Klaytn)에 존재하는 경우 true를 반환합니다. It returns false otherwise.

Parameters

Name	Type	Description
address	string	네트워크에 존재하는지 확인하고 싶은 계정 주소입니다.
blockNumber	number \	string
callback	function	(선택 사항) 선택적 콜백(callback)은 오류 객체를 첫 번째 매개 변수로, 결과를 두 번째 매개 변수로 반환합니다.

Return Value

Promise는 boolean을 반환합니다.

Type	Description
boolean	입력으로 받은 주소가 Klaytn에 존재하는지 여부를 반환합니다.

Example

> caver.rpc.klay.accountCreated('0x{address in hex}').then(console.log)
true

caver.rpc.klay.getAccount

caver.rpc.klay.getAccount(address [, blockNumber] [, callback])

입력으로 받은 Klaytn 계정 주소의 계정 정보를 반환합니다. Klaytn 계정 타입에 관한 자세한 내용은 Klaytn Account Types를 확인하십시오.

참고 caver.rpc.klay.getAccount 는 계정이 Klaytn에 있는 경우에만 계정을 반환하므로 주소와 일치하는 계정이 Klaytn 상에 존재하지 않으면 null 이 반환됩니다.

Parameters

Name	Type	Description
address	string	계정 정보를 알고 싶은 계정 주소입니다.
blockNumber	number \	string
callback	function	(optional) Optional callback, returns an error object as the first parameter and the result as the second.

Return Value

Promise returns object

Type	Description
object	계정 정보를 담고 있는 객체입니다. Each account type has different attributes.

Example

// Get account with EOA
> caver.rpc.klay.getAccount('0x{address in hex}').then(console.log)
{
    accType: 1,
    account: {
        nonce: 0,
        balance: '0x',
        humanReadable: false,
        key: { keyType: 1, key: {} }
    }
}

// Get account with SCA
> caver.rpc.klay.getAccount('0x{address in hex}').then(console.log)
{
    accType: 2,
    account: {
        nonce: 1,
        balance: '0x0',
        humanReadable: false,
        key: { keyType: 3, key: {} },
        storageRoot: '0xd0ce6b9ba63cf727d48833bcaf69f398bb353e9a5b6235ac5bb3a8e95ff90ecf',
        codeHash: '7pemrmP8fcguH/ut/SYHJoUSecfUIcUyeCpMf0sBYVI=',
        codeFormat: 0
    }
}

caver.rpc.klay.getAccountKey

caver.rpc.klay.getAccountKey(address [, blockNumber] [, callback])

주어진 주소의 AccountKey를 반환합니다. 입력으로 받은 주소 계정이 AccountKeyLegacy를 AccountKey로 갖고 있거나 계정이 스마트 컨트랙트 계정이면 빈 키 값을 반환합니다. 더 자세한 내용은 Account Key를 확인하십시오.

참고 caver.rpc.klay.getAccountKey는 각 AccountKey 타입에 따라 다른 객체를 반환합니다. 주어진 주소를 가진 계정이 Klaytn에 존재하지 않는다면 null을 반환합니다.

Parameters

Name	Type	Description
address	string	Klaytn 계정 주소입니다. 이 메서드를 실행하면 이 계정 주소의 AccountKey 정보가 담긴 객체를 얻습니다.
blockNumber	number \	string
callback	function	(optional) Optional callback, returns an error object as the first parameter and the result as the second.

Return Value

Promise returns object

Type	Description
object	AccountKey 정보를 담고 있는 객체입니다. AccountKey 유형에 따라 다른 속성을 반환합니다.

Example

// AccountKey type: AccountKeyLegacy
> caver.rpc.klay.getAccountKey('0x{address in hex}').then(console.log)
{ keyType: 1, key: {} }

// AccountKey type: AccountKeyPublic
> caver.rpc.klay.getAccountKey('0x{address in hex}').then(console.log)
{
    keyType: 2,
    key: { x:'0xb9a4b...', y:'0x7a285...' }
}

// AccountKey type: AccountKeyFail
> caver.rpc.klay.getAccountKey('0x{address in hex}').then(console.log)
{ keyType: 3, key:{} }

// AccountKey type: AccountKeyWeightedMultiSig
> caver.rpc.klay.getAccountKey('0x{address in hex}').then(console.log)
{
    keyType: 4,
    key: {
        threshold: 2,
        keys: [
            {
                weight: 1,
                key: { x: '0xae6b7...', y: '0x79ddf...' }
            },
            {
                weight: 1,
                key: { x: '0xd4256...', y: '0xfc5e7...' }
            },
            {
                weight: 1,
                key: { x: '0xd653e...', y: '0xe974e...' }
            }
        ]
    }
}

// AccountKey type: AccountKeyRoleBased
> caver.rpc.klay.getAccountKey('0x{address in hex}').then(console.log)
{
    keyType: 5,
    key: [
            {
                key: { x: '0x81965...', y: '0x18242...' },
                keyType: 2
            },
            {
                key: { x: '0x73363...', y: '0xfc3e3...' },
                keyType: 2
            },
            {
                key: { x: '0x95c92...', y: '0xef783...' },
                keyType: 2
            }
    ]
}

caver.rpc.klay.encodeAccountKey

caver.rpc.klay.encodeAccountKey(accountKey [, callback])

AccountKey 정보를 담고 있는 객체를 RLP(Recursive Length Prefix)로 인코딩합니다. account.getRLPEncodingAccountKey를 사용해도 RLP 인코딩된 AccountKey를 얻습니다.

Parameters

Name	Type	Description
accountKey	object	An object defines keyType and key inside or an instance of AccountKey (AccountKeyLegacy, AccountKeyPublic, AccountKeyFail, AccountKeyWeightedMultiSig or AccountKeyRoleBased).
callback	function	(optional) Optional callback, returns an error object as the first parameter and the result as the second.

Return Value

Promise returns string

Type	Description
string	RLP로 인코딩된 AccountKey.

Example

// AccountKey type: AccountKeyLegacy
> caver.rpc.klay.encodeAccountKey({ keyType: 1, key: {} }).then(console.log)
0x01c0

// AccountKey type: AccountKeyPublic
> caver.rpc.klay.encodeAccountKey({
        keyType: 2,
        key: {
            x: '0xdbac81e8486d68eac4e6ef9db617f7fbd79a04a3b323c982a09cdfc61f0ae0e8',
            y: '0x906d7170ba349c86879fb8006134cbf57bda9db9214a90b607b6b4ab57fc026e',
        },
    }).then(console.log)
0x02a102dbac81e8486d68eac4e6ef9db617f7fbd79a04a3b323c982a09cdfc61f0ae0e8

// AccountKey type: AccountKeyFail
> caver.rpc.klay.encodeAccountKey({ keyType: 3, key: {} }).then(console.log)
0x03c0

// AccountKey type: AccountKeyWeightedMultiSig
> caver.rpc.klay.encodeAccountKey({
        keyType: 4,
        key: {
            threshold: 2,
            keys: [
                {
                    weight: 1,
                    key: {
                        x: '0xc734b50ddb229be5e929fc4aa8080ae8240a802d23d3290e5e6156ce029b110e',
                        y: '0x61a443ac3ffff164d1fb3617875f07641014cf17af6b7dc38e429fe838763712',
                    },
                },
                {
                    weight: 1,
                    key: {
                        x: '0x12d45f1cc56fbd6cd8fc877ab63b5092ac77db907a8a42c41dad3e98d7c64dfb',
                        y: '0x8ef355a8d524eb444eba507f236309ce08370debaa136cb91b2f445774bff842',
                    },
                },
            ],
        },
    }).then(console.log)
0x04f84b02f848e301a102c734b50ddb229be5e929fc4aa8080ae8240a802d23d3290e5e6156ce029b110ee301a10212d45f1cc56fbd6cd8fc877ab63b5092ac77db907a8a42c41dad3e98d7c64dfb

// AccountKey type: AccountKeyRoleBased
> caver.rpc.klay.encodeAccountKey({
        keyType: 5,
        key: [
            {
                keyType: 2,
                key: {
                    x: '0xe4a01407460c1c03ac0c82fd84f303a699b210c0b054f4aff72ff7dcdf01512d',
                    y: '0xa5735a23ce1654b14680054a993441eae7c261983a56f8e0da61280758b5919',
                },
            },
            {
                keyType: 4,
                key: {
                    threshold: 2,
                    keys: [
                        {
                            weight: 1,
                            key: {
                                x: '0xe4a01407460c1c03ac0c82fd84f303a699b210c0b054f4aff72ff7dcdf01512d',
                                y: '0xa5735a23ce1654b14680054a993441eae7c261983a56f8e0da61280758b5919',
                            },
                        },
                        {
                            weight: 1,
                            key: {
                                x: '0x36f6355f5b532c3c1606f18fa2be7a16ae200c5159c8031dd25bfa389a4c9c06',
                                y: '0x6fdf9fc87a16ac359e66d9761445d5ccbb417fb7757a3f5209d713824596a50d',
                            },
                        },
                    ],
                },
            },
            {
                keyType: 2,
                key: {
                    x: '0xc8785266510368d9372badd4c7f4a94b692e82ba74e0b5e26b34558b0f081447',
                    y: '0x94c27901465af0a703859ab47f8ae17e54aaba453b7cde5a6a9e4a32d45d72b2',
                },
            },
        ],
    }).then(console.log)
0x05f898a302a103e4a01407460c1c03ac0c82fd84f303a699b210c0b054f4aff72ff7dcdf01512db84e04f84b02f848e301a103e4a01407460c1c03ac0c82fd84f303a699b210c0b054f4aff72ff7dcdf01512de301a10336f6355f5b532c3c160

// Use an AccountKey instance
> const accountKey = caver.account.create('0x{address in hex}', '0xf1d2e...').accountKey
> caver.rpc.klay.encodeAccountKey(accountKey).then(console.log)
0x02a102f1d2e558cfa07151534cd406b1ac5c25d99e9c1cf925328d14fd15c6fe50df27

caver.rpc.klay.decodeAccountKey

caver.rpc.klay.decodeAccountKey(encodedKey [, callback])

RLP 인코딩된 AccountKey를 디코딩 합니다. caver.account.accountKey.decode를 사용해도 RLP 인코딩된 AccountKey를 디코딩합니다.

Parameters

Name	Type	Description
encodedKey	string	A RLP-encoded AccountKey.
callback	function	(optional) Optional callback, returns an error object as the first parameter and the result as the second.

Return Value

Promise returns object

Type	Description
object	내부에 keyType과 key가 정의된 객체입니다.

Example

// AccountKey type: AccountKeyLegacy
> caver.rpc.klay.decodeAccountKey('0x01c0').then(console.log)
{ keyType: 1, key: {} }

// AccountKey type: AccountKeyPublic
> caver.rpc.klay.decodeAccountKey('0x02a102dbac81e8486d68eac4e6ef9db617f7fbd79a04a3b323c982a09cdfc61f0ae0e8').then(console.log)
{
    keyType: 2,
    key: {
        x: '0xdbac81e8486d68eac4e6ef9db617f7fbd79a04a3b323c982a09cdfc61f0ae0e8',
        y: '0x906d7170ba349c86879fb8006134cbf57bda9db9214a90b607b6b4ab57fc026e',
    },
}

// AccountKey type: AccountKeyFail
> caver.rpc.klay.decodeAccountKey('0x03c0').then(console.log)
{ keyType: 3, key: {} }

// AccountKey type: AccountKeyWeightedMultiSig
> caver.rpc.klay.decodeAccountKey('0x04f84b02f848e301a102c734b50ddb229be5e929fc4aa8080ae8240a802d23d3290e5e6156ce029b110ee301a10212d45f1cc56fbd6cd8fc877ab63b5092ac77db907a8a42c41dad3e98d7c64dfb').then(console.log)
{
    keyType: 4,
    key: {
        threshold: 2,
        keys: [
            {
                weight: 1,
                key: {
                    x: '0xc734b50ddb229be5e929fc4aa8080ae8240a802d23d3290e5e6156ce029b110e',
                    y: '0x61a443ac3ffff164d1fb3617875f07641014cf17af6b7dc38e429fe838763712',
                },
            },
            {
                weight: 1,
                key: {
                    x: '0x12d45f1cc56fbd6cd8fc877ab63b5092ac77db907a8a42c41dad3e98d7c64dfb',
                    y: '0x8ef355a8d524eb444eba507f236309ce08370debaa136cb91b2f445774bff842',
                },
            },
        ],
    },
}


// AccountKey type: AccountKeyRoleBased
> caver.rpc.klay.decodeAccountKey('0x05f898a302a103e4a01407460c1c03ac0c82fd84f303a699b210c0b054f4aff72ff7dcdf01512db84e04f84b02f848e301a103e4a01407460c1c03ac0c82fd84f303a699b210c0b054f4aff72ff7dcdf01512de301a10336f6355f5b532c3c160').then(console.log)
{
    keyType: 5,
    key: [
        {
            keyType: 2,
            key: {
                x: '0xe4a01407460c1c03ac0c82fd84f303a699b210c0b054f4aff72ff7dcdf01512d',
                y: '0xa5735a23ce1654b14680054a993441eae7c261983a56f8e0da61280758b5919',
            },
        },
        {
            keyType: 4,
            key: {
                threshold: 2,
                keys: [
                    {
                        weight: 1,
                        key: {
                            x: '0xe4a01407460c1c03ac0c82fd84f303a699b210c0b054f4aff72ff7dcdf01512d',
                            y: '0xa5735a23ce1654b14680054a993441eae7c261983a56f8e0da61280758b5919',
                        },
                    },
                    {
                        weight: 1,
                        key: {
                            x: '0x36f6355f5b532c3c1606f18fa2be7a16ae200c5159c8031dd25bfa389a4c9c06',
                            y: '0x6fdf9fc87a16ac359e66d9761445d5ccbb417fb7757a3f5209d713824596a50d',
                        },
                    },
                ],
            },
        },
        {
            keyType: 2,
            key: {
                x: '0xc8785266510368d9372badd4c7f4a94b692e82ba74e0b5e26b34558b0f081447',
                y: '0x94c27901465af0a703859ab47f8ae17e54aaba453b7cde5a6a9e4a32d45d72b2',
            },
        },
    ],
}

caver.rpc.klay.getBalance

caver.rpc.klay.getBalance(address [, blockNumber] [, callback])

입력으로 받은 Klaytn 계정 주소의 잔액을 반환합니다.

Parameters

Name	Type	Description
address	string	잔액을 확인할 계정 주소입니다.
blockNumber	number \	string
callback	function	(optional) Optional callback, returns an error object as the first parameter and the result as the second.

Return Value

Promise returns string

Type	Description
string	주어진 주소의 peb 단위 현재 잔액입니다.

Example

> caver.rpc.klay.getBalance('0x{address in hex}').then(console.log)
0xde0b6b3a7640000

caver.rpc.klay.getCode

caver.rpc.klay.getCode(address [, blockNumber] [, callback])

Returns code at a given address.

Parameters

Name	Type	Description
address	string	코드를 알고 싶은 주소입니다.
blockNumber	number \	string
callback	function	(optional) Optional callback, returns an error object as the first parameter and the result as the second.

Return Value

Promise returns string

Type	Description
string	The code from the given address.

Example

> caver.rpc.klay.getCode('0x{address in hex}').then(console.log)
0x60806...

caver.rpc.klay.getTransactionCount

caver.rpc.klay.getTransactionCount(address [, blockNumber] [, callback])

어떤 주소의 계정에서 발신된 트랜잭션의 총 개수를 반환합니다.

Parameters

Name	Type	Description
address	string	발신한 트랜잭션 개수를 확인할 주소입니다.
blockNumber	number \	string
callback	function	(optional) Optional callback, returns an error object as the first parameter and the result as the second.

Return Value

Promise returns string

Type	Description
string	주어진 주소에서 발신된 트랜잭션의 개수입니다. 이 값은 16진수입니다.

Example

> caver.rpc.klay.getTransactionCount('0x{address in hex}').then(console.log)
0x5f

caver.rpc.klay.isContractAccount

caver.rpc.klay.isContractAccount(address [, blockNumber] [, callback])

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. 더 자세한 내용은 Smart Contract Account를 확인하십시오.

Parameters

Name	Type	Description
address	string	isContractAccount로 확인할 주소입니다.
blockNumber	number \	string
callback	function	(optional) Optional callback, returns an error object as the first parameter and the result as the second.

Return Value

Promise returns boolean

Type	Description
boolean	true면 파라미터가 스마트 컨트랙트 계정의 주소입니다.

Example

> caver.rpc.klay.isContractAccount('0x{address in hex}').then(console.log)
false

> caver.rpc.klay.isContractAccount('0x{address in hex}').then(console.log)
true

caver.rpc.klay.sign

caver.rpc.klay.sign(address, message [, blockNumber] [, callback])

Klaytn에서 사용하는 서명된 데이터를 생성합니다. Refer to Klaytn Platform API - klay_sign to know how the signature is generated.

NOTE: This API provides the function to sign a message using an imported account in your Klaytn node. The imported account in your node must be unlocked to sign the message. To sign a transaction with imported account in your Klaytn node, use caver.rpc.klay.signTransaction.

Parameters

Name	Type	Description
address	String	메시지에 서명할 불러온 계정 주소입니다.
message	String	서명하려는 메시지입니다.
blockNumber	number \	string
callback	function	(optional) Optional callback, returns an error object as the first parameter and the result as the second.

Return Value

Promise returns string

Type	Description
string	노드에 불러온 계정이 만든 서명입니다.

Example

> caver.rpc.klay.sign('0x{address in hex}', '0xdeadbeaf').then(console.log)
0x1066e052c4be821daa4d0a0cd1e9e75ccb200bb4001c2e38853ba41b712a5a226da2acd67c86a13b266e0d75d0a6e7d1551c8924af413267615a5948617c746c1c

caver.rpc.klay.getAccounts

caver.rpc.klay.getAccounts([callback])

Klaytn 노드가 가진 주소 목록을 반환합니다.

Parameters

Name	Type	Description
callback	function	(optional) Optional callback, returns an error object as the first parameter and the result as the second.

Return Value

Promise returns Array

Type	Description
Array	Klaytn 노드가 가진 주소 목록입니다.

Example

> caver.rpc.klay.getAccounts().then(console.log)
[
    '0xe1531e916857d1b3a7db92f9187b96a7b43813bf',
    '0x75331c25535052157ff5110ba7d0cf940d3a9ca6'
]

caver.rpc.klay.getBlockNumber

caver.rpc.klay.getBlockNumber([callback])

Returns the number of the most recent block.

Parameters

Name	Type	Description
callback	function	(optional) Optional callback, returns an error object as the first parameter and the result as the second.

Return Value

Promise returns string

Type	Description
string	가장 최근의 블록 번호입니다. 이 값은 16진수 값입니다.

Example

> caver.rpc.klay.getBlockNumber().then(console.log)
0x5d39

caver.rpc.klay.getHeader

caver.rpc.klay.getHeader(blockNumberOrHash [, callback])

Returns a block header by block hash or block number. If the user passes the block hash as a parameter, caver.rpc.klay.getHeaderByHash is called, and if the block number is called as a parameter, caver.rpc.klay.getHeaderByNumber is called.

Parameters

Name	Type	Description
blockNumberOrHash	number \	string
callback	function	(optional) Optional callback, returns an error object as the first parameter and the result as the second.

Return Value

Promise returns object

Type	Description
object	A block header object. For a detailed description of the return value, please refer to caver.rpc.klay.getHeaderByHash.

Example

> caver.rpc.klay.getHeader(1).then(console.log)
{
  baseFeePerGas: '0x0',
  blockScore: '0x1',
  extraData: '0xd8830...',
  gasUsed: '0x0',
  governanceData: '0x',
  hash: '0x1b6582f0908add2221317288482aada596551e9f9d779a2aebc55d81d3149ba3',
  logsBloom: '0x00000...',
  number: '0xbacd3',
  parentHash: '0xd6e36611a6722b94b8e4bb4d164755445409cf43aa5db0a5d4ae01e621c81ce7',
  receiptsRoot: '0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470',
  reward: '0x30be91c80566da777d30e659b6746174ecc61576',
  stateRoot: '0xe75d808889451b1dac3d209e8cfbb2159ea6b2a080ce6081be775fb426f047a8',
  timestamp: '0x62201975',
  timestampFoS: '0x0',
  transactionsRoot: '0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470'
}

caver.rpc.klay.getHeaderByNumber

caver.rpc.klay.getHeaderByNumber(blockNumber [, returnTransactionObjects] [, callback])

Returns a block header by block number.

Parameters

Name	Type	Description
blockNumber	number \	string
callback	function	(optional) Optional callback, returns an error object as the first parameter and the result as the second.

Return Value

Promise returns object

Type	Description
object	A block header object. For a detailed description of the return value, please refer to caver.rpc.klay.getHeaderByHash.

Example

> caver.rpc.klay.getHeaderByNumber(765139).then(console.log)
{
  baseFeePerGas: '0x0',
  blockScore: '0x1',
  extraData: '0xd8830...',
  gasUsed: '0x0',
  governanceData: '0x',
  hash: '0x1b6582f0908add2221317288482aada596551e9f9d779a2aebc55d81d3149ba3',
  logsBloom: '0x00000...',
  number: '0xbacd3',
  parentHash: '0xd6e36611a6722b94b8e4bb4d164755445409cf43aa5db0a5d4ae01e621c81ce7',
  receiptsRoot: '0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470',
  reward: '0x30be91c80566da777d30e659b6746174ecc61576',
  stateRoot: '0xe75d808889451b1dac3d209e8cfbb2159ea6b2a080ce6081be775fb426f047a8',
  timestamp: '0x62201975',
  timestampFoS: '0x0',
  transactionsRoot: '0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470'
}

caver.rpc.klay.getHeaderByHash

caver.rpc.klay.getHeaderByHash(blockHash [, returnTransactionObjects] [, callback])

blockHash를 사용해 가장 최근의 블록 번호를 반환합니다.

Parameters

Name	Type	Description
blockHash	string	블록 해시입니다.
callback	function	(optional) Optional callback, returns an error object as the first parameter and the result as the second.

Return Value

Promise returns object - An object includes the block header:

Name	Type	Description
baseFeePerGas	string	The base fee per gas. This value is returned only when EthTxTypeCompatibleBlock is activated for that block number.
blockScore	string	블록체인 네트워크의 채굴 난이도입니다. blockScore 사용은 네트워크 합의에 따라 다릅니다. BFT 합의 엔진에서는 항상 1입니다.
extraData	string	The "extra data" field of this block.
gasUsed	string	이 블록에 있는 모든 트랜잭션에서 사용된 가스양의 총합입니다.
governanceData	string	RLP encoded governance configuration
hash	string	Hash of the block. null when it is a pending block.
logsBloom	string	The bloom filter for the logs of the block. null when it is a pending block.
number	string	The block number. null when it is a pending block.
parentHash	string	Hash of the parent block.
receiptsRoot	string	The root of the receipts trie of the block.
reward	string	The address of the beneficiary to whom the block rewards were given.
stateRoot	string	The root of the final state trie of the block.
timestamp	string	블록이 생성되었을 때의 Unix 타임스탬프입니다.
timestampFoS	string	The fraction of a second of the timestamp for when the block was collated.
transactionsRoot	string	The root of the transaction trie of the block.

Example

> caver.rpc.klay.getHeaderByHash('0x1b6582f0908add2221317288482aada596551e9f9d779a2aebc55d81d3149ba3').then(console.log)
{
  baseFeePerGas: '0x0',
  blockScore: '0x1',
  extraData: '0xd8830...',
  gasUsed: '0x0',
  governanceData: '0x',
  hash: '0x1b6582f0908add2221317288482aada596551e9f9d779a2aebc55d81d3149ba3',
  logsBloom: '0x00000...',
  number: '0xbacd3',
  parentHash: '0xd6e36611a6722b94b8e4bb4d164755445409cf43aa5db0a5d4ae01e621c81ce7',
  receiptsRoot: '0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470',
  reward: '0x30be91c80566da777d30e659b6746174ecc61576',
  stateRoot: '0xe75d808889451b1dac3d209e8cfbb2159ea6b2a080ce6081be775fb426f047a8',
  timestamp: '0x62201975',
  timestampFoS: '0x0',
  transactionsRoot: '0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470'
}

caver.rpc.klay.getBlock

caver.rpc.klay.getBlock(blockNumberOrHash [, returnTransactionObjects] [, callback])

Returns information about a block by block hash or block number. If the user passes the block hash as a parameter, caver.rpc.klay.getBlockByHash is called, and if the block number is called as a parameter, caver.rpc.klay.getBlockByNumber is called.

Parameters

Name	Type	Description
blockNumberOrHash	number \	string
returnTransactionObjects	boolean	(선택 사항, 기본값은 false) true이면, 반환된 블록은 모든 트랜잭션 객체를 가집니다. false이면, 반환된 블록은 트랜잭션 해시만을 가집니다.
callback	function	(optional) Optional callback, returns an error object as the first parameter and the result as the second.

Return Value

Promise returns object

Type	Description
object	블록 객체입니다. For a detailed description of the return value, please refer to caver.rpc.klay.getBlockByHash.

Example

> caver.rpc.klay.getBlock(1).then(console.log)
{
    baseFeePerGas: '0x0',
    blockscore: '0x1',
    extraData: '0xd8830...',
    gasUsed: '0x0',
    governanceData: '0x',
    hash: '0x58482921af951cf42a069436ac9338de50fd963bdbea40e396f416f9ac96a08b',
    logsBloom: '0x00000...',
    number: '0x1',
    parentHash: '0x6b7c0a49f445d39b6d7dc9ba5b593b326f3a953e75ff1fcf64b9a5fa51c2725b',
    receiptsRoot: '0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470',
    reward: '0xddc2002b729676dfd906484d35bb02a8634d7040',
    size: '0x285',
    stateRoot: '0xb88b6110e6f73b732714bb346e6ff24beb480c0dc901a55be24e38ad1c6d5fa9',
    timestamp: '0x5ee7fe9f',
    timestampFoS: '0xd',
    totalBlockScore: '0x2',
    transactions: [],
    transactionsRoot: '0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470',
    voteData: '0x',
}

caver.rpc.klay.getBlockByNumber

caver.rpc.klay.getBlockByNumber(blockNumber [, returnTransactionObjects] [, callback])

Returns information about a block by block number.

Parameters

Name	Type	Description
blockNumber	number \	string
returnTransactionObjects	boolean	(optional, default false) If true, the returned block will contain all transactions as objects, and if false, it will only contain the transaction hashes.
callback	function	(optional) Optional callback, returns an error object as the first parameter and the result as the second.

Return Value

Promise returns object

Type	Description
object	A block object. For detailed description of return value, please refer to caver.rpc.klay.getBlockByHash.

Example

> caver.rpc.klay.getBlockByNumber(1).then(console.log)
{
    baseFeePerGas: '0x0',
    blockscore: '0x1',
    extraData: '0xd8830...',
    gasUsed: '0x0',
    governanceData: '0x',
    hash: '0x58482921af951cf42a069436ac9338de50fd963bdbea40e396f416f9ac96a08b',
    logsBloom: '0x00000...',
    number: '0x1',
    parentHash: '0x6b7c0a49f445d39b6d7dc9ba5b593b326f3a953e75ff1fcf64b9a5fa51c2725b',
    receiptsRoot: '0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470',
    reward: '0xddc2002b729676dfd906484d35bb02a8634d7040',
    size: '0x285',
    stateRoot: '0xb88b6110e6f73b732714bb346e6ff24beb480c0dc901a55be24e38ad1c6d5fa9',
    timestamp: '0x5ee7fe9f',
    timestampFoS: '0xd',
    totalBlockScore: '0x2',
    transactions: [],
    transactionsRoot: '0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470',
    voteData: '0x'
}

caver.rpc.klay.getBlockByHash

caver.rpc.klay.getBlockByHash(blockHash [, returnTransactionObjects] [, callback])

Returns the block number of the most recent block by using blockHash.

Parameters

Name	Type	Description
blockHash	string	The block hash.
returnTransactionObjects	boolean	(optional, default false) If true, the returned block will contain all transactions as objects, and if false, it will only contain the transaction hashes.
callback	function	(optional) Optional callback, returns an error object as the first parameter and the result as the second.

Return Value

Promise는 object를 반환 - 블록을 포함하는 객체입니다.

Name	Type	Description
baseFeePerGas	string	The base fee per gas. This value is returned only when EthTxTypeCompatibleBlock is activated for that block number.
blockScore	string	The difficulty of mining in the blockchain network. The use of blockScore differs from the consensus of the network. Always 1 in the BFT consensus engine.
extraData	string	The "extra data" field of this block.
gasUsed	string	The gas in total that was used by all transactions in this block.
governanceData	string	RLP encoded governance configuration
hash	string	Hash of the block. null when it is a pending block.
logsBloom	string	The bloom filter for the logs of the block. null when it is a pending block.
number	string	The block number. null when it is a pending block.
parentHash	string	Hash of the parent block.
receiptsRoot	string	The root of the receipts trie of the block.
reward	string	The address of the beneficiary to whom the block rewards were given.
size	string	Integer the size of this block in bytes.
stateRoot	string	The root of the final state trie of the block.
timestamp	string	The unix timestamp for when the block was collated.
timestampFoS	string	The fraction of a second of the timestamp for when the block was collated.
totalBlockScore	string	Integer of the total blockScore of the chain until this block.
transactions	Array	트랜잭션 객체의 배열이거나 또는 returnTransactionObjects 매개변수에 따라 32바이트 크기의 트랜잭션 해시입니다.
transactionsRoot	string	The root of the transaction trie of the block.
voteData	string	제안자의 RLP 인코딩된 거버넌스 투표입니다.

Example

> caver.rpc.klay.getBlockByHash('0x58482921af951cf42a069436ac9338de50fd963bdbea40e396f416f9ac96a08b').then(console.log)
{
    baseFeePerGas: '0x0',
    blockscore: '0x1',
    extraData: '0xd8830...',
    gasUsed: '0x0',
    governanceData: '0x',
    hash: '0x58482921af951cf42a069436ac9338de50fd963bdbea40e396f416f9ac96a08b',
    logsBloom: '0x00000...',
    number: '0x1',
    parentHash: '0x6b7c0a49f445d39b6d7dc9ba5b593b326f3a953e75ff1fcf64b9a5fa51c2725b',
    receiptsRoot: '0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470',
    reward: '0xddc2002b729676dfd906484d35bb02a8634d7040',
    size: '0x285',
    stateRoot: '0xb88b6110e6f73b732714bb346e6ff24beb480c0dc901a55be24e38ad1c6d5fa9',
    timestamp: '0x5ee7fe9f',
    timestampFoS: '0xd',
    totalBlockScore: '0x2',
    transactions: [],
    transactionsRoot: '0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470',
    voteData: '0x'
}

caver.rpc.klay.getBlockReceipts

caver.rpc.klay.getBlockReceipts(blockHash [, callback])

블록 해시로 조회한 블록에 포함된 영수증을 반환합니다.

Parameters

Name	Type	Description
blockHash	string	The block hash.
callback	function	(optional) Optional callback, returns an error object as the first parameter and the result as the second.

Return Value

Promise returns Array

Type	Description
Array	조회한 블록에 포함된 트랜잭션 영수증들입니다. 조회하고자 하는 블록이 트랜잭션을 담고 있지 않으면 빈 배열 []이 반환됩니다. For detailed description of transaction receipt, please refer to caver.rpc.klay.getTransactionReceipt.

Example

> caver.rpc.klay.getBlockReceipts('0x4584bea6b8b2abe7f024d1e63dd0571cfd28cd5157b4f6cb2ac4160a7b0057e0').then(console.log)
[ 
    {
        blockHash: '0x4584bea6b8b2abe7f024d1e63dd0571cfd28cd5157b4f6cb2ac4160a7b0057e0',
        blockNumber: '0x5301',
        contractAddress: null,
        from: '0xddc2002b729676dfd906484d35bb02a8634d7040',
        gas: '0x61a8',
        gasPrice: '0x5d21dba00',
        gasUsed: '0x5208',
        logs: [],
        logsBloom: '0x00000...',
        nonce: '0x5e',
        senderTxHash: '0x413f080a498ae3973490c2f80e75e6a492cfcdac8be8051220bb7a964768d28c',
        signatures: [
            { 
                V: '0x4e44',
                R: '0x98583ffa8d9a6d5f9e60e4daebb33f18e8ad4d32653c4a2fa7f12ce025af763d',
                S: '0x9b9e5257293e3b986842b6a203dd16ce46f16ed42dd3e9592fcaab9ea2696cb'
            }    
        ],
        status: '0x1',
        to: '0xc0aabc441129991dd3a9363a9a43b745527ea4e7',
        transactionHash: '0x413f080a498ae3973490c2f80e75e6a492cfcdac8be8051220bb7a964768d28c',
        transactionIndex: '0x0',
        type: 'TxTypeValueTransfer',
        typeInt: 8,
        value: '0xde0b6b3a7640000'
    }
]

caver.rpc.klay.getBlockTransactionCountByNumber

caver.rpc.klay.getBlockTransactionCountByNumber(blockNumber [, callback])

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

Parameters

Name	Type	Description
blockNumber	number \	string
callback	function	(optional) Optional callback, returns an error object as the first parameter and the result as the second.

Return Value

Promise returns string

Type	Description
string	주어진 블록에 기록된 트랜잭션의 개수입니다. 이 값은 16진수 값입니다.

Example

> caver.rpc.klay.getBlockTransactionCountByNumber(21249).then(console.log)
0x1

caver.rpc.klay.getBlockTransactionCountByHash

caver.rpc.klay.getBlockTransactionCountByHash(blockHash [, callback])

블록 해시로 조회한 블록에 담긴 트랜잭션의 개수를 반환합니다.

Parameters

Name	Type	Description
blockHash	string	The block hash.
callback	function	(optional) Optional callback, returns an error object as the first parameter and the result as the second.

Return Value

Promise returns string

Type	Description
string	The number of transactions in the given block in hex.

Example

> caver.rpc.klay.getBlockTransactionCountByHash('0x4584bea6b8b2abe7f024d1e63dd0571cfd28cd5157b4f6cb2ac4160a7b0057e0').then(console.log)
0x1

caver.rpc.klay.getBlockWithConsensusInfoByNumber

caver.rpc.klay.getBlockWithConsensusInfoByNumber(blockNumber [, callback])

블록 번호로 조회한 블록을 합의에 대한 정보와 함께 반환합니다.

Parameters

Name	Type	Description
blockNumber	number \	string
callback	function	(optional) Optional callback, returns an error object as the first parameter and the result as the second.

Return Value

Promise returns object

Type	Description
string	합의 정보를 포함해 블록 정보를 담고 있는 객체입니다. For detailed description of return value, please refer to caver.rpc.klay.getBlockWithConsensusInfoByHash.

Example

> caver.rpc.klay.getBlockWithConsensusInfoByNumber(21249).then(console.log)
{
    blockscore: '0x1',