Transaction

eth_call

Executes a new message call immediately, without creating a transaction on the block chain. The eth_call method can be used to query internal contract state, to execute validations coded into a contract or even to test what the effect of a transaction would be without running it live.

Parameters

Name	Type	Description
callObject	Object	The transaction call object. See the next table for the object's properties.
blockNumberOrTag	QUANTITY | TAG	Integer or hexadecimal block number, or the string "earliest", "latest" or "pending" as in default block parameter. The block number is mandatory and defines the context (state) against which the specified transaction should be executed.
stateOverrideSet	Object	The state override set is an optional address-to-state mapping, where each entry specifies some state to be ephemerally overridden prior to executing the call.

callObject has the following properties:

Name	Type	Description
from	20-byte DATA	(optional) Address the transaction is simulated to have been sent from. The 0x00..0 address is used if no address is specified.
to	20-byte DATA	(optional) Address the transaction is sent to.
gas	QUANTITY	(optional) Maximum gas allowance for the code execution to avoid infinite loops. Defaults to 2^63 or whatever value the node operator specified via --rpc.gascap.
gasPrice	QUANTITY	(optional) Number of peb to simulate paying for each unit of gas during execution. Defaults to 0 peb.
value	QUANTITY	(optional) Amount of peb to simulate sending along with the transaction. Defaults to 0.
input	DATA	(optional) Hash of the method signature and encoded parameter. It replaces data field, but data field is still supported for backward compatibility.

Example - callObject

{
  "from": "0xd9c9cd5f6779558b6e0ed4e6acf6b1947e7fa1f3",
  "to": "0xebe8efa441b9302a0d7eaecc277c09d20d684540",
  "gas": "0x1bd7c",
  "input": "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"
}

stateOverrideSet has the following properties:

Name	Type	Description
balance	Quantity	(optional) Fake balance to set for the account before executing the call.
nonce	Quantity	(optional) Fake nonce to set for the account before executing the call.
code	DATA	(optional) Fake EVM bytecode to inject into the account before executing the call.
state	Object	(optional) Fake key-value mapping to override all slots in the account storage before executing the call.
stateDiff	Object	(optional) Fake key-value mapping to override individual slots in the account storage before executing the call.

The goal of the state override set is manyfold:

• It can be used by DApps to reduce the amount of contract code needed to be deployed on chain. Code that simply returns internal state or does pre-defined validations can be kept off chain and fed to the node on-demand.

• It can be used for smart contract analysis by extending the code deployed on chain with custom methods and invoking them. This avoids having to download and reconstruct the entire state in a sandbox to run custom code against.

• It can be used to debug smart contracts in an already deployed large suite of contracts by selectively overriding some code or state and seeing how execution changes. Specialized tooling will probably be necessary.

Example - stateOverrideSet

{
  "0xd9c9cd5f6779558b6e0ed4e6acf6b1947e7fa1f3": {
    "balance": "0xde0b6b3a7640000"
  },
  "0xebe8efa441b9302a0d7eaecc277c09d20d684540": {
    "code": "0x...",
    "state": {
      "0ccfa7da0b3522161999fd723e497b1a3556598653325c2fe7f0b2a98c9d6aae": "c70447ca5ce4344e32ae8234c5e70a446e26b39a5b636b502983ea7a555ab21c"
    }
  }
}

Example

To test call in meaningful way, you need to setup test environment like below.

• Deploy KIP-7 Contract to test call or you can use it with already deployed one.

  • We will use KIP-7 contract function totalSupply to check whether call is working or not in this example.

  • To call totalSupply you should know about its function signature which is 0x18160ddd.

In this example:

• The address of KIP-7 contract: 0xbE3892d33620bE5aca8c75D39e7401871194d290 (You should use an existing contract address.)

• The address of caller: 0xca7a99380131e6c76cfa622396347107aeedca2d

curl -H "Content-Type: application/json" --data '{"jsonrpc":"2.0", "method": "eth_call", "params": [{"from": "0xca7a99380131e6c76cfa622396347107aeedca2d", "to": "0xbE3892d33620bE5aca8c75D39e7401871194d290", "input": "0x18160ddd"}, "latest"], "id": 1}' https://kaia.nownodes.io

{"jsonrpc":"2.0","id":1,"result":"0x0000000000000000000000000000000000000000000000000de0b6b3a7640000"}

Example - StateOverrides

Following the example above, let's test call using state overrides feature.

• We will replace the bytecode of 0xbE3892d33620bE5aca8c75D39e7401871194d290 which is the address of KIP-7 contract already deployed above (Check the above example).

• The bytecode to be replaced is 6080604052600436106049576000357c0100000000000000000000000000000000000000000000000000000000900463ffffffff1680632e64cec114604e5780636057361d146076575b600080fd5b348015605957600080fd5b50606060a0565b6040518082815260200191505060405180910390f35b348015608157600080fd5b50609e6004803603810190808035906020019092919050505060a9565b005b60008054905090565b80600081905550505600a165627a7a723058207783dba41884f73679e167576362b7277f88458815141651f48ca38c25b498f80029 .

  • The original source code of this bytecode is below.

pragma solidity ^0.4.24;

/**
 * @title Storage
 * @dev Store & retrieve value in a variable
 */
contract Storage {

    uint256 number;

    /**
     * @dev Store value in variable
     * @param num value to store
     */
    function store(uint256 num) public {
        number = num;
    }

    /**
     * @dev Return value 
     * @return value of 'number'
     */
    function retrieve() public view returns (uint256){
        return number;
    }
}

Now let's override the state of 0xbE3892d33620bE5aca8c75D39e7401871194d290 (KIP-7 contract) with another contract's byte code (Storage contract) and call retrieve (function signature: 0x2e64cec1) of Storage contract.

curl -H "Content-Type: application/json" --data '{"jsonrpc":"2.0", "method": "eth_call", "params": [{"from": "0xca7a99380131e6c76cfa622396347107aeedca2d", "to": "0xbE3892d33620bE5aca8c75D39e7401871194d290", "input": "0x2e64cec1"}, "latest", {"0xbE3892d33620bE5aca8c75D39e7401871194d290": {"code":"0x6080604052600436106049576000357c0100000000000000000000000000000000000000000000000000000000900463ffffffff1680632e64cec114604e5780636057361d146076575b600080fd5b348015605957600080fd5b50606060a0565b6040518082815260200191505060405180910390f35b348015608157600080fd5b50609e6004803603810190808035906020019092919050505060a9565b005b60008054905090565b80600081905550505600a165627a7a723058207783dba41884f73679e167576362b7277f88458815141651f48ca38c25b498f80029"}}], "id": 1}' https://kaia.nownodes.io

{"jsonrpc":"2.0","id":1,"result":"0x0000000000000000000000000000000000000000000000000000000000000000"}

eth_estimateGas

Generates and returns an estimate of how much gas is necessary to allow the transaction to complete. The transaction will not be added to the blockchain. Note that the estimate may be significantly more than the amount of gas actually used by the transaction, for a variety of reasons including EVM mechanics and node performance.

Parameters

Name	Type	Description
callObject	Object	The transaction call object. See the next table for the object's properties.

callObject has the following properties:

Name	Type	Description
from	20-byte DATA	(optional) Address the transaction is simulated to have been sent from. The 0x00..0 address is used if no address is specified.
to	20-byte DATA	(optional) Address the transaction is sent to.
gas	QUANTITY	(optional) Maximum gas allowance for the code execution to avoid infinite loops. Defaults to 2^63 or whatever value the node operator specified via --rpc.gascap.
gasPrice	QUANTITY	(optional) Number of peb to simulate paying for each unit of gas during execution. Defaults to 0 peb.
value	QUANTITY	(optional) Amount of peb to simulate sending along with the transaction. Defaults to 0.
input	DATA	(optional) Hash of the method signature and encoded parameter. It replaces data field, but data field is still supported for backward compatibility.

Example - callObject

{
  "from": "0xd9c9cd5f6779558b6e0ed4e6acf6b1947e7fa1f3",
  "to": "0xebe8efa441b9302a0d7eaecc277c09d20d684540",
  "gas": "0x1bd7c",
  "input": "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"
}

Return Value

Type	Description
QUANTITY	The amount of gas used.

Example

// Request
curl -H "Content-Type: application/json" --data '{"jsonrpc": "2.0", "method": "eth_estimateGas", "params": [{"from": "0x3f71029af4e252b25b9ab999f77182f0cd3bc085", "to": "0x87ac99835e67168d4f9a40580f8f5c33550ba88b", "gas": "0x100000", "gasPrice": "0x5d21dba00", "value": "0x0", "input": "0x8ada066e"}], "id": 1}' https://kaia.nownodes.io

// Result
{
  "jsonrpc": "2.0","id":1,
  "result": "0x5208" // 21000
}

eth_getTransactionByBlockHashAndIndex

Returns information about a transaction by block hash and transaction index position.

Please check the Caution-Transaction before using this API.

Parameters

Type	Description
32-byte DATA	Hash of a block.
QUANTITY	Integer of the transaction index position.

Return Value

See eth_getTransactionByHash

Example

To see examples of various transaction types, check eth_getTransactionByHash

// Request
curl -H "Content-Type: application/json" --data '{"jsonrpc":"2.0","method":"eth_getTransactionByBlockHashAndIndex","params":["0x451cafae98d61b7458b5cef54402830941432278184453e3ca490eb687317e68", "0x0"],"id":1}' https://kaia.nownodes.io

// Result
{
  "jsonrpc": "2.0",
  "id": 1,
  "result": {
    "blockHash": "0xd49c770e1c6fdf340e25aca6d2de0ddf3d10873582b62b7ad604ff5b291bdbe5",
    "blockNumber": "0xd017a7",
    "from": "0x46705dfff24256421a05d056c29e81bdc09723b8",
    "gas": "0x19a28",
    "gasPrice": "0x5d21dba00",
    "hash": "0x73af85890dd29691ff807b8d9e10c5a4d3349d28b6b143fa5e46db2c61b376e9",
    "input": "0xa9059cbb000000000000000000000000cad1d9c2ad1860d4d4fb53782720279c60ae4de8000000000000000000000000000000000000000000000000000000000cd0a3c0",
    "nonce": "0x1bea18",
    "r": "0x85d848276f22f8ce5aa17cd27ded21269e17cacc258ef2aaece296497803aa9",
    "s": "0x2d9ae07f349c66628b02db7033a8a35d18f6338c39f995d7e8336d635002df54",
    "to": "0xdac17f958d2ee523a2206206994597c13d831ec7",
    "transactionIndex": "0x3",
    "type": "0x0",
    "v": "0x25",
    "value": "0x0"
  }
}

eth_getTransactionByBlockNumberAndIndex

Returns information about a transaction by block number and transaction index position.

Please check the Caution-Transaction before using this API.

Parameters

Type	Description
QUANTITY | TAG	Integer or hexadecimal block number, or the string "earliest", "latest" or "pending" as in the default block parameter.
QUANTITY	The transaction index position.

Return Value

See eth_getTransactionByHash

Example

To see examples of various transaction types, check eth_getTransactionByHash

// Request
curl -H "Content-Type: application/json" --data '{"jsonrpc":"2.0","method":"eth_getTransactionByBlockNumberAndIndex","params":["0x27", "0x0"],"id":1}' https://kaia.nownodes.io

// Result
{
  "jsonrpc": "2.0",
  "id": 1,
  "result": {
    "blockHash": "0xd49c770e1c6fdf340e25aca6d2de0ddf3d10873582b62b7ad604ff5b291bdbe5",
    "blockNumber": "0xd017a7",
    "from": "0x46705dfff24256421a05d056c29e81bdc09723b8",
    "gas": "0x19a28",
    "gasPrice": "0x5d21dba00",
    "hash": "0x73af85890dd29691ff807b8d9e10c5a4d3349d28b6b143fa5e46db2c61b376e9",
    "input": "0xa9059cbb000000000000000000000000cad1d9c2ad1860d4d4fb53782720279c60ae4de8000000000000000000000000000000000000000000000000000000000cd0a3c0",
    "nonce": "0x1bea18",
    "r": "0x85d848276f22f8ce5aa17cd27ded21269e17cacc258ef2aaece296497803aa9",
    "s": "0x2d9ae07f349c66628b02db7033a8a35d18f6338c39f995d7e8336d635002df54",
    "to": "0xdac17f958d2ee523a2206206994597c13d831ec7",
    "transactionIndex": "0x3",
    "type": "0x0",
    "v": "0x25",
    "value": "0x0"
  }
}

eth_getTransactionByHash

Returns the information about a transaction requested by transaction hash.

Please check the Caution-Transaction before using this API.

Parameters

Type	Description
32-byte DATA	Hash of a transaction.

Return Value

Fields of transaction can be different based on transaction types. Currently, there are three types of transactions in Ethereum(Legacy, AccessList , DynamicFee).

Object - A transaction object, or null when no transaction was found:

Legacy Transaction

Name	Type	Description
blockHash	32-byte DATA	Hash of the block where this transaction was in. null when it is pending.
blockNumber	QUANTITY	Block number where this transaction was in. null when it is pending.
from	20-byte DATA	Address of the sender.
gas	QUANTITY	Gas provided by the sender.
gasPrice	QUANTITY	Gas price provided by the sender in peb.
hash	32-byte DATA	Hash of the transaction.
input	DATA	The data sent along with the transaction.
nonce	QUANTITY	The number of transactions made by the sender prior to this one.
to	20-byte DATA	Address of the receiver. null when it is a contract creation transaction.
value	QUANTITY	Integer of values sent with this transaction.
transactionIndex	QUANTITY	Integer of the transaction index position in the block. null when it is pending.
type	QUANTITY	An integer representing the type of the transaction.
v	QUANTITY	ECDSA recovery id.
r	32-byte DATA	ECDSA signature r.
s	32-byte DATA	ECDSA signature s.

Example - Legacy Transaction

// Request
curl -H "Content-Type: application/json" --data '{"jsonrpc":"2.0","method":"eth_getTransactionByHash","params":["0xaca5d9a1ed8b86b1ef61431b2bedfc99a66eaefc3a7e1cffdf9ff53653956a67"],"id":1}' https://kaia.nownodes.io

// Result
{
  "jsonrpc": "2.0",
  "id": 1,
  "result": {
    "blockHash": "0xd49c770e1c6fdf340e25aca6d2de0ddf3d10873582b62b7ad604ff5b291bdbe5",
    "blockNumber": "0xd017a7",
    "from": "0x46705dfff24256421a05d056c29e81bdc09723b8",
    "gas": "0x19a28",
    "gasPrice": "0x5d21dba00",
    "hash": "0x73af85890dd29691ff807b8d9e10c5a4d3349d28b6b143fa5e46db2c61b376e9",
    "input": "0xa9059cbb000000000000000000000000cad1d9c2ad1860d4d4fb53782720279c60ae4de8000000000000000000000000000000000000000000000000000000000cd0a3c0",
    "nonce": "0x1bea18",
    "r": "0x85d848276f22f8ce5aa17cd27ded21269e17cacc258ef2aaece296497803aa9",
    "s": "0x2d9ae07f349c66628b02db7033a8a35d18f6338c39f995d7e8336d635002df54",
    "to": "0xdac17f958d2ee523a2206206994597c13d831ec7",
    "transactionIndex": "0x3",
    "type": "0x0",
    "v": "0x25",
    "value": "0x0"
  }
}

AccessList Transaction

Name	Type	Description
blockHash	32-byte DATA	Hash of the block where this transaction was in. null when it is pending.
blockNumber	QUANTITY	Block number where this transaction was in. null when it is pending.
from	20-byte DATA	Address of the sender.
gas	QUANTITY	Gas provided by the sender.
gasPrice	QUANTITY	Gas price provided by the sender in peb.
hash	32-byte DATA	Hash of the transaction.
input	DATA	The data sent along with the transaction.
nonce	QUANTITY	The number of transactions made by the sender prior to this one.
to	20-byte DATA	Address of the receiver. null when it is a contract creation transaction.
value	QUANTITY	Integer of values sent with this transaction.
transactionIndex	QUANTITY	Integer of the transaction index position in the block. null when it is pending.
type	QUANTITY	An integer representing the type of the transaction.
accessList	Array	An array of accessList.
chainId	QUANTITY	Chain id set on the requested node.
v	QUANTITY	ECDSA recovery id.
r	32-byte DATA	ECDSA signature r.
s	32-byte DATA	ECDSA signature s.

Example - AccessList Transaction

// Request
curl -H "Content-Type: application/json" --data '{"jsonrpc":"2.0","method":"eth_getTransactionByHash","params":["0xfe134fa592b5acdd353fc3c25c3ba9979b8582fee3e5ac9740f418813b405038"],"id":1}' https://kaia.nownodes.io

// Result
{
  "jsonrpc": "2.0",
  "id": 1,
  "result": {
    "blockHash": "0x12bb73d1bfd0b8ec005839acc69926d5699005c7738455848b3438a549457457",
    "blockNumber": "0x3c",
    "from": "0x3753f5bf8cca929eeeb4b74f200dfc6375ad5444",
    "gas": "0x52080",
    "gasPrice": "0x99999",
    "hash": "0xfe134fa592b5acdd353fc3c25c3ba9979b8582fee3e5ac9740f418813b405038",
    "input": "0x",
    "nonce": "0x3",
    "to": "0xca7a99380131e6c76cfa622396347107aeedca2d",
    "transactionIndex": "0x0",
    "value": "0x1",
    "type": "0x1",
    "accessList": [
      {
        "address": "0xca7a99380131e6c76cfa622396347107aeedca2d",
        "storageKeys": [
          "0x0709c257577296fac29c739dad24e55b70a260497283cf9885ab67b4daa9b67f"
        ]
      }
    ],
    "chainId": "0x2edaf",
    "v": "0x0",
    "r": "0x7c2568b6970bc2a87f828ef10dbd83057369cb62cf7c9e2b21357f04c3685cf0",
    "s": "0x21a32ce836b06acadcf507748909e5d7efaf49825b6eafff583b1e751e0cd306"
  }
}

DynamicFee Transaction

Name	Type	Description
blockHash	32-byte DATA	Hash of the block where this transaction was in. null when it is pending.
blockNumber	QUANTITY	Block number where this transaction was in. null when it is pending.
from	20-byte DATA	Address of the sender.
gas	QUANTITY	Gas provided by the sender.
gasPrice	QUANTITY	Gas price provided by the sender in peb.
maxFeePerGas	QUANTITY	A maximum amount to pay for the transaction to execute.
maxPriorityFeePerGas	QUANTITY	Gas tip cap for dynamic fee transaction in peb.
hash	32-byte DATA	Hash of the transaction.
input	DATA	The data sent along with the transaction.
nonce	QUANTITY	The number of transactions made by the sender prior to this one.
to	20-byte DATA	Address of the receiver. null when it is a contract creation transaction.
value	QUANTITY	Integer of values sent with this transaction.
transactionIndex	QUANTITY	Integer of the transaction index position in the block. null when it is pending.
type	QUANTITY	An integer representing the type of the transaction.
accessList	Array	An array of accessList.
chainId	QUANTITY	Chain id set on the requested node.
v	QUANTITY	ECDSA recovery id.
r	32-byte DATA	ECDSA signature r.
s	32-byte DATA	ECDSA signature s.

Example - DynamicFee Transaction

// Request
curl -H "Content-Type: application/json" --data '{"jsonrpc":"2.0","method":"eth_getTransactionByHash","params":["0x40e64aac79b2e51b05d41adc005e45d4618ad5e8783f8fac9e3af63b4f6cf27d"],"id":1}' https://kaia.nownodes.io

// Result
{
  "jsonrpc": "2.0",
  "id": 1,
  "result": {
    "blockHash": "0x2228ad3dd7588af51060adbdd6b4ac8c50ef91d59bea5399b2fa439138720886",
    "blockNumber": "0x4a",
    "from": "0x3753f5bf8cca929eeeb4b74f200dfc6375ad5444",
    "gas": "0x52080",
    "gasPrice": "0xa6528",
    "maxFeePerGas": "0xb6adf",
    "maxPriorityFeePerGas": "0x99999",
    "hash": "0x40e64aac79b2e51b05d41adc005e45d4618ad5e8783f8fac9e3af63b4f6cf27d",
    "input": "0x",
    "nonce": "0x4",
    "to": "0xca7a99380131e6c76cfa622396347107aeedca2d",
    "transactionIndex": "0x0",
    "value": "0x1",
    "type": "0x2",
    "accessList": [
      {
        "address": "0xca7a99380131e6c76cfa622396347107aeedca2d",
        "storageKeys": [
          "0x0709c257577296fac29c739dad24e55b70a260497283cf9885ab67b4daa9b67f"
        ]
      }
    ],
    "chainId": "0x2edaf",
    "v": "0x0",
    "r": "0xf7de95e3d4893cdb53c88fd5f7ec37a32df24da6a390259e470a5192cbefba46",
    "s": "0x2ba8cecb1332088ffc017cd9a08e613dabc306d16e593a42cda6f57def901292"
  }
}

eth_getTransactionReceipt

Returns the receipt of a transaction by transaction hash.

NOTE: The receipt is not available for pending transactions.

Please check the Caution-TransactionReceipt before using this API.

Parameters

Name	Type	Description
Hash	32-byte DATA	Hash of a transaction.

Return Value

Object - A transaction receipt object, or null when no receipt was found

Name	Type	Description
blockHash	32-byte DATA	Hash of the block where this transaction was in.
blockNumber	QUANTITY	The block number where this transaction was in.
contractAddress	DATA	The contract address created, if the transaction was a contract creation, otherwise null.
cumulativeGasUsed	QUANTITY	The total amount of gas used when this transaction was executed in the block.
effectiveGasPrice	QUANTITY	The actual value per gas deducted from the senders account. Before EIP-1559, this is equal to the transaction's gas price. After, it is equal to baseFeePerGas + min(maxFeePerGas - baseFeePerGas, maxPriorityFeePerGas).
from	20-byte DATA	Address of the sender.
logs	Array	Array of log objects, which this transaction generated.
logsBloom	256-byte DATA	Bloom filter for light clients to quickly retrieve related logs.
status	QUANTITY	Either 1 (success) or 0 (failure).
to	20-byte DATA	Address of the receiver. null when it is a contract creation transaction.
transactionHash	32-byte DATA	Hash of the transaction.
transactionIndex	QUANTITY	Integer of the transaction index position in the block.
type	QUANTITY	An integer representing the type of the transaction.

Example

// Request
curl -H "Content-Type: application/json" --data '{"jsonrpc":"2.0","method":"eth_getTransactionReceipt","params":["0xaca5d9a1ed8b86b1ef61431b2bedfc99a66eaefc3a7e1cffdf9ff53653956a67"],"id":1}' https://kaia.nownodes.io

// Result
{
  "jsonrpc": "2.0",
  "id": 1,
  "result": {
    "blockHash": "0xd49c770e1c6fdf340e25aca6d2de0ddf3d10873582b62b7ad604ff5b291bdbe5",
    "blockNumber": "0xd017a7",
    "contractAddress": null,
    "cumulativeGasUsed": "0x8dc5d",
    "effectiveGasPrice": "0x315c2f4800",
    "from": "0x46705dfff24256421a05d056c29e81bdc09723b8",
    "gasUsed": "0xf6e9",
    "logs": [
      {
        "address": "0xdac17f958d2ee523a2206206994597c13d831ec7",
        "blockHash": "0xd49c770e1c6fdf340e25aca6d2de0ddf3d10873582b62b7ad604ff5b291bdbe5",
        "blockNumber": "0xd017a7",
        "data": "0x000000000000000000000000000000000000000000000000000000000cd0a3c0",
        "logIndex": "0x13",
        "removed": false,
        "topics": [
          "0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef",
          "0x00000000000000000000000046705dfff24256421a05d056c29e81bdc09723b8",
          "0x000000000000000000000000cad1d9c2ad1860d4d4fb53782720279c60ae4de8"
        ],
        "transactionHash": "0x73af85890dd29691ff807b8d9e10c5a4d3349d28b6b143fa5e46db2c61b376e9",
        "transactionIndex": "0x3"
      }
    ],
    "logsBloom": "0x00000000000010000000000000000000000000000000000000000000000000000000000000000000000000000000010000000000000000000000400000000000000000008000000000000008000000000000200000000000000000000000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000080000000000000000000000000000000000000000000000002000000000000000000000000000000000000000000000000000004000800000000000000000000000000000000000000000000000000000000000000",
    "status": "0x1",
    "to": "0xdac17f958d2ee523a2206206994597c13d831ec7",
    "transactionHash": "0x73af85890dd29691ff807b8d9e10c5a4d3349d28b6b143fa5e46db2c61b376e9",
    "transactionIndex": "0x3",
    "type": "0x0"
  }
}

eth_sendRawTransaction

Creates a new message call transaction or a contract creation for signed transactions.

Parameters

Type	Description
DATA	The signed transaction data.

Return Value

Type	Description
32-byte DATA	The transaction hash or the zero hash if the transaction is not yet available.

If you deployed a contract, use eth_getTransactionReceipt to get the contract address.

Example

params: ["0x02f8738203e982022980850ba43b740082f61894a2a8854b1802d8cd5de631e690817c253d6a9153888ac7230489e8000080c001a0493a13b7eb1ad33c0b9043e4de1f2a5e8736407c8f039dd91b8bcba847c6b21ca0060b8063e42f8acc2bcc7d9d2e454491666452f3683cbc0dd768604b27bce6e3"]

// Request
curl -H "Content-Type: application/json" --data '{"jsonrpc":"2.0","method":"eth_sendRawTransaction","params":[{see above}],"id":1}' https://kaia.nownodes.io

// Result
{
  "jsonrpc": "2.0",
  "id":1,
  "result": "0xe670ec64341771606e55d6b4ca35a1a6b75ee3d5145a99d05921026d1527331"
}

eth_sendTransaction

Constructs a transaction with given parameters, signs the transaction with a sender's private key and propagates the transaction to Klaytn network.

NOTE: The address to sign with must be unlocked.

Parameters:

Name	Type	Description
transactionArgs	Object	An object of transaction arguments. See the table below for the object's properties.

transactionArgs has the following properties:

Name	Type	Description
from	20-byte DATA	The address from which the transaction is sent.
to	20-byte DATA	(not required when creating a new contract) The address to which the transaction is directed.
gas	QUANTITY	(optional) The integer of the gas provided for the transaction's execution. It will return unused gas.
maxFeePerGas	QUANTITY	(optional) The maximum amount to pay for the transaction's execution.
maxPriorityFeePerGas	QUANTITY	(optional) Gas tip cap for dynamic fee transaction in peb.
input	DATA	(optional) The hash of the method signature and the encoded parameter. It replaces data field, but data field is still supported for backward compatibility.
value	QUANTITY	(optional) The integer of values sent with this transaction.
nonce	QUANTITY	(optional) The integer of a nonce.

Return Value

Type	Description
32-byte DATA	The transaction hash or the zero hash if the transaction is not yet available.

If you deployed a contract, use eth_getTransactionReceipt to get the contract address.

Example

// Request
curl -H "Content-Type: application/json" --data '{"jsonrpc":"2.0","method":"eth_sendTransaction","params":[{"from": "0xca7a99380131e6c76cfa622396347107aeedca2d", "to": "0x8c9f4468ae04fb3d79c80f6eacf0e4e1dd21deee", "value": "0x1", "gas": "0x9999", "maxFeePerGas": "0x5d21dba00", "maxPriorityPerGas": "0x5d21dba00"}],"id":1}' https://kaia.nownodes.io

// Result
{
  "jsonrpc": "2.0",
  "id":1,
  "result": "0xe670ec64341771606e55d6b4ca35a1a6b75ee3d5145a99d05921026d1527331"
}

eth_signTransaction

Signs a transaction that can be submitted to the network at a later time using with eth_sendRawTransaction.

NOTE: The address to sign with must be unlocked.

Parameters:

Name	Type	Description
transactionArgs	Object	An object of transaction arguments. See the table below for the object's properties.

transactionArgs has the following properties:

Name	Type	Description
from	20-byte DATA	The address from which the transaction is sent.
to	20-byte DATA	(not required when creating a new contract) The address to which the transaction is directed.
gas	QUANTITY	The integer of the gas provided for the transaction's execution. It will return unused gas.
maxFeePerGas	QUANTITY	The maximum amount to pay for the transaction's execution.
maxPriorityFeePerGas	QUANTITY	Gas tip cap for dynamic fee transaction in peb.
input	DATA	(optional) The hash of the method signature and the encoded parameter. It replaces data field, but data field is still supported for backward compatibility.
value	QUANTITY	(optional) The integer of values sent with this transaction.
nonce	QUANTITY	The integer of a nonce.

Return Value

Object - The signed transaction object.

Name	Type	Description
raw	DATA	A rawTransaction string (a RLP-encoded transaction string).
tx	Object	The transaction object. See the next table for the object's properties.

tx has the following properties:

Name	Type	Description
type	QUANTITY	An integer representing the type of the transaction.
nonce	QUANTITY	The block number where this transaction was in.
gasPrice	QUANTITY	Gas price provided by the sender in peb. null when it is not a legacy transaction.
maxFeePerGas	QUANTITY	A maximum amount to pay for the transaction to execute. null when it is a legacy transaction.
maxPriorityFeePerGas	QUANTITY	Gas tip cap for dynamic fee transaction in peb. null when it is a legacy transaction.
gas	QUANTITY	Gas provided by the sender.
value	QUANTITY	Integer of values sent with this transaction.
v	QUANTITY	ECDSA recovery id.
r	32-byte DATA	ECDSA signature r.
s	32-byte DATA	ECDSA signature s.
chainId	QUANTITY	Chain id set on the requested node.
accessList	Array	An array of accessList.
hash	32-byte DATA	Hash of the transaction.

Example

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": {
    "raw": "0x02f86f8302edaf048505d21dba008505d21dba00829999948c9f4468ae04fb3d79c80f6eacf0e4e1dd21deee0180c001a0b6e16781d247b505aa8eaf363a6ea61e7c23c77ad64846ffda28e73e31304884a05a296904cd009506cb5ed006af016d2c5dab255966af9ba6f8fc352f75e9b079",
    "tx": {
      "type": "0x2",
      "nonce": "0x4",
      "gasPrice": null,
      "maxPriorityFeePerGas": "0x5d21dba00",
      "maxFeePerGas": "0x5d21dba00",
      "gas": "0x9999",
      "value": "0x1",
      "input": "0x",
      "v": "0x1",
      "r": "0xb6e16781d247b505aa8eaf363a6ea61e7c23c77ad64846ffda28e73e31304884",
      "s": "0x5a296904cd009506cb5ed006af016d2c5dab255966af9ba6f8fc352f75e9b079",
      "to": "0x8c9f4468ae04fb3d79c80f6eacf0e4e1dd21deee",
      "chainId": "0x2edaf",
      "accessList": [],
      "hash": "0x9cfbea4942b334050660ec7207f3323ee13e3196b06279f922404384acbf7b47"
    }
  }
}

eth_fillTransaction

Fills the defaults (nonce, gas, gasPrice or 1559 fields) on a given unsigned transaction, and returns it to the caller for further processing (signing + broadcast).

Parameters:

Parameters are same with eth_sendTransaction. See eth_sendtransaction.

Return value

See eth_signTransaction.

Example

// Request
curl https://kaia.nownodes.io -H "Content-Type: application/json" --data '{"jsonrpc":"2.0","method":"eth_fillTransaction", "params":[{"from": "0xca7a99380131e6c76cfa622396347107aeedca2d", "to": "0x8c9f4468ae04fb3d79c80f6eacf0e4e1dd21deee", "value": "0x1", "gas": "0x9999", "maxFeePerGas": "0x5d21dba00"}],"id":1}'

// Result
{
  "jsonrpc": "2.0",
  "id": 1,
  "result": {
    "raw": "0x02ef8302edaf808505d21dba008505d21dba00829999948c9f4468ae04fb3d79c80f6eacf0e4e1dd21deee0180c0808080",
    "tx": {
      "type": "0x2",
      "nonce": "0x0",
      "gasPrice": null,
      "maxPriorityFeePerGas": "0x5d21dba00",
      "maxFeePerGas": "0x5d21dba00",
      "gas": "0x9999",
      "value": "0x1",
      "input": "0x",
      "v": "0x0",
      "r": "0x0",
      "s": "0x0",
      "to": "0x8c9f4468ae04fb3d79c80f6eacf0e4e1dd21deee",
      "chainId": "0x2edaf",
      "accessList": [],
      "hash": "0x83e382bfb39249dc0e2b4283702bc1c0685deffad1316d166546da9c4c14c59d"
    }
  }
}

eth_pendingTransactions

Returns the transactions that are in the transaction pool and have a from address that is one of the accounts this node manages.

Parameters:

None

Return value

Name	Type	Description
pendingTransactions	Array	An array of transactions. For the returned transaction object, See eth_signTransaction

Example

// Request
curl https://kaia.nownodes.io -H "Content-Type: application/json" --data '{"jsonrpc":"2.0","method":"eth_pendingTransactions", "params":[],"id":1}'

// Result
{
  "jsonrpc": "2.0",
  "id": 39,
  "result": [
    {
      "blockHash": null,
      "blockNumber": null,
      "from": "0xca7a99380131e6c76cfa622396347107aeedca2d",
      "gas": "0x5208",
      "gasPrice": "0x5d21dba00",
      "maxFeePerGas": "0x5d21dba00",
      "maxPriorityFeePerGas": "0x5d21dba00",
      "hash": "0xb5cd867ccc356b86634092919fb1acf4e315618d6c804df3ec3d30d66b6baba5",
      "input": "0x",
      "nonce": "0xdb",
      "to": "0x3e2ac308cd78ac2fe162f9522deb2b56d9da9499",
      "transactionIndex": null,
      "value": "0x1",
      "type": "0x2",
      "accessList": [],
      "chainId": "0x2edaf",
      "v": "0x1",
      "r": "0x73992e7c3b9f6cd73176969efa8509d8e9ae0739e24b03d514508f8ef03f19ef",
      "s": "0x7035dd8639e82ea3ba922ff02e1f21f4cff92d0de33050934f5c70908d61e8c3"
    }
  ]
}

eth_resend

Resends a transaction.

It will remove the given transaction from the pool and reinsert it with the new gas price and limit.

NOTE: The address to sign with must be unlocked.

Parameters:

Name	Type	Description
transactionArgs	Object	An object of transaction arguments. See the table below for the object's properties.
gas price	QUANTITY	Integer of the gasPrice to change
gas	QUANTITY	(optional) Integer of the gas to change

transactionArgs has the following properties:

Name	Type	Description
from	20-byte DATA	The address from which the transaction is sent.
to	20-byte DATA	The address to which the transaction is directed.
gas	QUANTITY	(optional) The integer of the gas provided for the transaction's execution. It will return unused gas.
maxFeePerGas	QUANTITY	(optional) The maximum amount to pay for the transaction's execution.
maxPriorityFeePerGas	QUANTITY	(optional) Gas tip cap for dynamic fee transaction in peb.
input	DATA	(optional) The hash of the method signature and the encoded parameter. It replaces data field, but data field is still supported for backward compatibility.
value	QUANTITY	(optional) The integer of values sent with this transaction.
nonce	QUANTITY	(optional) The integer of a nonce.

Return Value

Type	Description
32-byte DATA	The transaction hash

Example

> var tx = eth.pendingTransactions()[0]
> eth.resend(tx, 750000000000, 300000)