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Supported JSON-RPC Methods

Here are the supported JSON-RPC Methods.

For a full description, see the JSON RPC Method details.

ModuleMethodSupportedComments
web3web3_clientVersionYES
web3web3_sha3YES
ethnet_versionYESMainnet Chain Id = 30, Testnet Chain Id = 31
ethnet_peerCountYES
ethnet_peerListYES
ethnet_listeningYES
etheth_chainIdYESSame response as eth_protocolVersion
etheth_protocolVersionYES
etheth_syncingYES
etheth_coinbaseYES
etheth_miningYES
etheth_hashrateYES
etheth_gasPriceYES
etheth_accountsYES
etheth_blockNumberYES
etheth_getBalanceYES
etheth_getStorageAtYES
etheth_getTransactionCountYES
etheth_getBlockTransactionCountByHashYES
etheth_getBlockTransactionCountByNumberYES
etheth_getUncleCountByBlockHashYES
etheth_getUncleCountByBlockNumberPARTIALLYOption "pending" not yet supported.
etheth_getCodePARTIALLYOption "pending" not yet supported.
etheth_signYES
etheth_sendTransactionYES
etheth_sendRawTransactionYES
etheth_callYES
etheth_estimateGasYES
etheth_getBlockByHashYES
etheth_getBlockByNumberPARTIALLYOption "pending" not yet supported.
etheth_getTransactionByHashYES
etheth_getTransactionByBlockHashAndIndexYES
etheth_getTransactionByBlockNumberAndIndexPARTIALLYOption "pending" not yet supported.
etheth_getTransactionReceiptYES
etheth_pendingTransactionsYES
etheth_getUncleByBlockHashAndIndexYES
etheth_getUncleByBlockNumberAndIndexPARTIALLYOption "pending" not yet supported.
etheth_getCompilers-For security reasons, we've decided not to include compilers in node.
etheth_compileLLL-For security reasons, we've decided not to include compilers in node.
etheth_compileSolidity-For security reasons, we've decided not to include compilers in node.
etheth_compileSerpent-For security reasons, we've decided not to include compilers in node.
etheth_newFilterYES
etheth_newBlockFilterYES
etheth_newPendingTransactionFilterYES
etheth_uninstallFilterYES
etheth_getFilterChangesYES
etheth_getFilterLogsYES
etheth_getLogsYES
etheth_bridgeStateYES
etheth_netHashrateYES
dbdb_putString-Deprecated
dbdb_getString-Deprecated
dbdb_putHex-Deprecated
dbdb_getHex-Deprecated
debugdebug_traceTransactionYES
debugdebug_traceBlockByHashYES
debugdebug_wireProtocolQueueSizeYES
evmevm_increaseTimeYES
evmevm_mineYES
evmevm_resetYES
evmevm_revertYES
evmevm_snapshotYES
evmevm_startMiningYES
evmevm_stopMiningYES
mnrmnr_submitBitcoinBlockYES
mnrmnr_submitBitcoinBlockTransactionsYES
mnrmnr_submitBitcoinBlockPartialMerkleYES
mnrmnr_getWorkYES
personalpersonal_dumpRawKeyYES
personalpersonal_importRawKeyYES
personalpersonal_listAccountsYES
personalpersonal_lockAccountYES
personalpersonal_newAccountWithSeedYES
personalpersonal_newAccountYES
personalpersonal_sendTransactionYES
personalpersonal_unlockAccountYES
rskrsk_getRawTransactionReceiptByHashYES
rskrsk_getTransactionReceiptNodesByHashYES
rskrsk_getRawBlockHeaderByHashYES
rskrsk_getRawBlockHeaderByNumberYES
rskrsk_protocolVersionYES
tracetrace_transactionYES
tracetrace_blockYES
tracetrace_filterYES
txpooltxpool_contentYES
txpooltxpool_inspectYES
txpooltxpool_statusYES
scosco_banAddressYES
scosco_unbanAddressYES
scosco_peerListYES
scosco_bannedAddressesYES
scosco_reputationSummaryYES
shhshh_post-Whisper protocol not supported.
shhshh_version-Whisper protocol not supported.
shhshh_newIdentity-Whisper protocol not supported.
shhshh_hasIdentity-Whisper protocol not supported.
shhshh_newGroup-Whisper protocol not supported.
shhshh_addToGroup-Whisper protocol not supported.
shhshh_newFilter-Whisper protocol not supported.
shhshh_uninstallFilter-Whisper protocol not supported.
shhshh_getFilterChanges-Whisper protocol not supported.
shhshh_getMessages-Whisper protocol not supported.

JSON RPC method details​

These descriptions are taken from Ethereum's JSON RPC documentation.

web3_clientVersion​

Returns the current client version.

Parameters​

none

Returns​

String - The current client version.

Example​
// Request
curl -X POST --data '{"jsonrpc":"2.0","method":"web3_clientVersion","params":[],"id":67}'

// Result
{
  "id":67,
  "jsonrpc":"2.0",
  "result": "Mist/v0.9.3/darwin/go1.4.1"
}

web3_sha3​

Returns Keccak-256 (not the standardized SHA3-256) of the given data.

Parameters​
  1. DATA - the data to convert into a SHA3 hash.
Example Parameters​
params: ["0x68656c6c6f20776f726c64"];
Returns​

DATA - The SHA3 result of the given string.

Example​
// Request
curl -X POST --data '{"jsonrpc":"2.0","method":"web3_sha3","params":["0x68656c6c6f20776f726c64"],"id":64}'

// Result
{
  "id":64,
  "jsonrpc": "2.0",
  "result": "0x47173285a8d7341e5e972fc677286384f802f8ef42a5ec5f03bbfa254cb01fad"
}

net_version​

Returns the current network id.

Parameters​

none

Returns​

String - The current network id.

  • "30": RSK Mainnet
  • "31": Ethercamp test network
  • "32": Developer network
  • "33": RSK created local network

Example

// Request
curl -X POST --data '{"jsonrpc":"2.0","method":"net_version","params":[],"id":67}'

// Result
{
  "id":67,
  "jsonrpc": "2.0",
  "result": "3"
}

net_listening​

Returns true if client is actively listening for network connections.

Parameters​

none

Returns​

Boolean - true when listening, otherwise false.

Example​
// Request
curl -X POST --data '{"jsonrpc":"2.0","method":"net_listening","params":[],"id":67}'

// Result
{
  "id":67,
  "jsonrpc":"2.0",
  "result":true
}

net_peerCount​

Returns number of peers currently connected to the client.

Parameters​

none

Returns​

QUANTITY - integer of the number of connected peers.

Example​
// Request
curl -X POST --data '{"jsonrpc":"2.0","method":"net_peerCount","params":[],"id":74}'

// Result
{
  "id":74,
  "jsonrpc": "2.0",
  "result": "0x2" // 2
}

net_peerList​

Returns list of peers known to the client.

Parameters​

none

Returns​

Array - The list of peers.

Example​
// Request
curl -X POST --data '{"jsonrpc":"2.0","method":"net_peerList","params":[],"id":1}'


// Result
{
  "jsonrpc":"2.0",
  "id":1,
  "result": [
    "3fd44f66 | ec2-52-15-37-171.us-east-2.compute.amazonaws.com/52.15.37.171:5050",
    "50517861 | bootstrap14.rsk.co/54.169.136.187:5050",
    "434f8932 | bootstrap07.rsk.co/54.169.12.15:5050"]
}

eth_chainId​

Returns the currently configured chain id, a value used in replay-protected transaction signing as introduced by EIP-155.

Parameters​

none

Returns​

String - The current chainId.

Example​
// Request
curl -X POST --data '{"jsonrpc":"2.0","method":"eth_chainId","params":[],"id":67}'

// Result
{
  "id":67,
  "jsonrpc": "2.0",
  "result": "0x1e"
}

eth_protocolVersion​

Returns the current ethereum protocol version.

Parameters​

none

Returns​

String - The current ethereum protocol version.

Example​
// Request
curl -X POST --data '{"jsonrpc":"2.0","method":"eth_protocolVersion","params":[],"id":67}'

// Result
{
  "id":67,
  "jsonrpc": "2.0",
  "result": "0x54"
}

eth_syncing​

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

Parameters​

none

Returns​

Object|Boolean, An object with sync status data or FALSE, when not syncing:

  • 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 eth_blockNumber
  • highestBlock: QUANTITY - The estimated highest block
Example​
// Request
curl -X POST --data '{"jsonrpc":"2.0","method":"eth_syncing","params":[],"id":1}'

// Result
{
  "id":1,
  "jsonrpc": "2.0",
  "result": {
    startingBlock: '0x384',
    currentBlock: '0x386',
    highestBlock: '0x454'
  }
}
// Or when not syncing
{
  "id":1,
  "jsonrpc": "2.0",
  "result": false
}

eth_coinbase​

Returns the client coinbase address.

Parameters​

none

Returns​

DATA, 20 bytes - the current coinbase address.

Example​
// Request
curl -X POST --data '{"jsonrpc":"2.0","method":"eth_coinbase","params":[],"id":64}'

// Result
{
  "id":64,
  "jsonrpc": "2.0",
  "result": "0xc94770007dda54cF92009BFF0dE90c06F603a09f"
}

eth_mining​

Returns true if client is actively mining new blocks.

Parameters​

none

Returns​

Boolean - returns true of the client is mining, otherwise false.

Example​
// Request
curl -X POST --data '{"jsonrpc":"2.0","method":"eth_mining","params":[],"id":71}'

// Result
{
  "id":71,
  "jsonrpc": "2.0",
  "result": true
}

eth_hashrate​

Returns the number of hashes per second that the node is mining with.

Parameters​

none

Returns​

QUANTITY - number of hashes per second.

Example​
// Request
curl -X POST --data '{"jsonrpc":"2.0","method":"eth_hashrate","params":[],"id":71}'

// Result
{
  "id":71,
  "jsonrpc": "2.0",
  "result": "0x38a"
}

eth_gasPrice​

Returns the current price per gas in wei.

Parameters​

none

Returns​

QUANTITY - integer of the current gas price in wei.

Example​
// Request
curl -X POST --data '{"jsonrpc":"2.0","method":"eth_gasPrice","params":[],"id":73}'

// Result
{
  "id":73,
  "jsonrpc": "2.0",
  "result": "0x09184e72a000" // 10000000000000
}

eth_accounts​

Returns a list of addresses owned by client.

Parameters​

none

Returns​

Array of DATA, 20 Bytes - addresses owned by the client.

Example​
// Request
curl -X POST --data '{"jsonrpc":"2.0","method":"eth_accounts","params":[],"id":1}'

// Result
{
  "id":1,
  "jsonrpc": "2.0",
  "result": ["0xc94770007dda54cF92009BFF0dE90c06F603a09f"]
}

eth_blockNumber​

Returns the number of most recent block.

Parameters​

none

Returns​

QUANTITY - integer of the current block number the client is on.

Example​
// Request
curl -X POST --data '{"jsonrpc":"2.0","method":"eth_blockNumber","params":[],"id":1}'

// Result
{
  "id":83,
  "jsonrpc": "2.0",
  "result": "0xc94" // 1207
}

eth_getBalance​

Returns the balance of the account of given address.

Parameters​
  1. DATA, 20 Bytes - address to check for balance.
  2. QUANTITY|TAG|MAP - integer block number, or the string "latest", "earliest" or "pending", see the default block parameter, or a map containing a block hash string, under the key "blockHash" or a string hexadecimal number, under the key "blockNumber".
Example Parameters​
params: ["0xc94770007dda54cF92009BFF0dE90c06F603a09f", "latest"];
Returns​

QUANTITY - integer of the current balance in wei.

Example​
// Request
curl -X POST --data '{"jsonrpc":"2.0","method":"eth_getBalance","params":["0xc94770007dda54cF92009BFF0dE90c06F603a09f", "latest"],"id":1}'

// Result
{
  "id":1,
  "jsonrpc": "2.0",
  "result": "0x0234c8a3397aab58" // 158972490234375000
}

eth_getStorageAt​

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

Parameters​
  1. DATA, 20 Bytes - address of the storage.
  2. QUANTITY - integer of the position in the storage.
  3. QUANTITY|TAG|MAP - integer block number, or the string "latest", "earliest" or "pending", see the default block parameter, or a map containing a block hash string, under the key "blockHash" or a string hexadecimal number, under the key "blockNumber".
Returns​

DATA - the value at this storage position (A 32-byte zero value is returned for non-existing keys).

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:

curl -X POST --data '{"jsonrpc":"2.0", "method": "eth_getStorageAt", "params": ["0x295a70b2de5e3953354a6a8344e616ed314d7251", "0x0", "latest"], "id": 1}' localhost:8545

{"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:

keccack(LeftPad32(key, 0), LeftPad32(map position, 0))

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

keccak(
  decodeHex(
    "000000000000000000000000391694e7e0b0cce554cb130d723a9d27458f9298" +
      "0000000000000000000000000000000000000000000000000000000000000001"
  )
);

The geth console which comes with the web3 library can be used to make the calculation:

> var key = "000000000000000000000000391694e7e0b0cce554cb130d723a9d27458f9298" + "0000000000000000000000000000000000000000000000000000000000000001"
undefined
> web3.sha3(key, {"encoding": "hex"})
"0x6661e9d6d8b923d5bbaab1b96e1dd51ff6ea2a93520fdc9eb75d059238b8c5e9"

Now to fetch the storage:

curl -X POST --data '{"jsonrpc":"2.0", "method": "eth_getStorageAt", "params": ["0x295a70b2de5e3953354a6a8344e616ed314d7251", "0x6661e9d6d8b923d5bbaab1b96e1dd51ff6ea2a93520fdc9eb75d059238b8c5e9", "latest"], "id": 1}' localhost:8545

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

eth_getTransactionCount​

Returns the number of transactions sent from an address.

Parameters​
  1. DATA, 20 Bytes - address.
  2. QUANTITY|TAG|MAP - integer block number, or the string "latest", "earliest" or "pending", see the default block parameter, or a map containing a block hash string, under the key "blockHash" or a string hexadecimal number, under the key "blockNumber".
Example Parameters​
params: [
  "0xc94770007dda54cF92009BFF0dE90c06F603a09f",
  "latest", // state at the latest block
];
Returns​

QUANTITY - integer of the number of transactions send from this address.

Example​
// Request
curl -X POST --data '{"jsonrpc":"2.0","method":"eth_getTransactionCount","params":["0xc94770007dda54cF92009BFF0dE90c06F603a09f","latest"],"id":1}'

// Result
{
  "id":1,
  "jsonrpc": "2.0",
  "result": "0x1" // 1
}

eth_getBlockTransactionCountByHash​

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

Parameters​
  1. DATA, 32 Bytes - hash of a block.
Example Parameters​
params: ["0xb903239f8543d04b5dc1ba6579132b143087c68db1b2168786408fcbce568238"];
Returns​

QUANTITY - integer of the number of transactions in this block, or null when no block was found.

Example​
// Request
curl -X POST --data '{"jsonrpc":"2.0","method":"eth_getBlockTransactionCountByHash","params":["0xc94770007dda54cF92009BFF0dE90c06F603a09f"],"id":1}'

// Result
{
  "id":1,
  "jsonrpc": "2.0",
  "result": "0xc" // 11
}

eth_getBlockTransactionCountByNumber​

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

Parameters​
  1. QUANTITY|TAG - integer of a block number, or the string "earliest", "latest" or "pending", as in the default block parameter.
Example Parameters​
params: [
  "0xe8", // 232
];
Returns​

QUANTITY - integer of the number of transactions in this block.

Example​
// Request
curl -X POST --data '{"jsonrpc":"2.0","method":"eth_getBlockTransactionCountByNumber","params":["0xe8"],"id":1}'

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

eth_getUncleCountByBlockHash​

Returns the number of uncles in a block from a block matching the given block hash.

Parameters​
  1. DATA, 32 Bytes - hash of a block.
Example Parameters​
params: ["0xc94770007dda54cF92009BFF0dE90c06F603a09f"];
Returns​

QUANTITY - integer of the number of uncles in this block.

Example​
// Request
curl -X POST --data '{"jsonrpc":"2.0","method":"eth_getUncleCountByBlockHash","params":["0xc94770007dda54cF92009BFF0dE90c06F603a09f"],"id":1}'

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

eth_getUncleCountByBlockNumber​

Returns the number of uncles in a block from a block matching the given block number.

Parameters​
  1. QUANTITY|TAG - integer of a block number, or the string "latest", "earliest" or "pending", see the default block parameter.
params: [
  "0xe8", // 232
];
Returns​

QUANTITY - integer of the number of uncles in this block.

Example​
// Request
curl -X POST --data '{"jsonrpc":"2.0","method":"eth_getUncleCountByBlockNumber","params":["0xe8"],"id":1}'

// Result
{
  "id":1,
  "jsonrpc": "2.0",
  "result": "0x1" // 1
}

eth_getCode​

Returns code at a given address.

Parameters​
  1. DATA, 20 Bytes - address.
  2. QUANTITY|TAG|MAP - integer block number, or the string "latest", "earliest" or "pending", see the default block parameter, or a map containing a block hash string, under the key "blockHash" or a string hexadecimal number, under the key "blockNumber".
Example Parameters​
params: [
  "0xa94f5374fce5edbc8e2a8697c15331677e6ebf0b",
  "0x2", // 2
];
Returns​

DATA - the code from the given address.

Example​
// Request
curl -X POST --data '{"jsonrpc":"2.0","method":"eth_getCode","params":["0xa94f5374fce5edbc8e2a8697c15331677e6ebf0b", "0x2"],"id":1}'

// Result
{
  "id":1,
  "jsonrpc": "2.0",
  "result": "0x600160008035811a818181146012578301005b601b6001356025565b8060005260206000f25b600060078202905091905056"
}

eth_sign​

The sign method calculates an Ethereum specific signature with: sign(keccak256("\x19Ethereum Signed Message:\n" + len(message) + message))).

By adding a prefix to the message makes the calculated signature recognisable as an Ethereum specific signature. This prevents misuse where a malicious DApp can sign arbitrary data (e.g. transaction) and use the signature to impersonate the victim.

Note the address to sign with must be unlocked.

Parameters​

account, message

  1. DATA, 20 Bytes - address.
  2. DATA, N Bytes - message to sign.
Returns​

DATA: Signature

Example​
// Request
curl -X POST --data '{"jsonrpc":"2.0","method":"eth_sign","params":["0x9b2055d370f73ec7d8a03e965129118dc8f5bf83", "0xdeadbeaf"],"id":1}'

// Result
{
  "id":1,
  "jsonrpc": "2.0",
  "result": "0xa3f20717a250c2b0b729b7e5becbff67fdaef7e0699da4de7ca5895b02a170a12d887fd3b17bfdce3481f10bea41f45ba9f709d39ce8325427b57afcfc994cee1b"
}

eth_sendTransaction​

Creates new message call transaction or a contract creation, if the data field contains code.

Parameters​
  1. Object - The transaction object
  • from: DATA, 20 Bytes - The address the transaction is sent from.
  • to: DATA, 20 Bytes - (optional when creating new contract) The address the transaction is sent to.
  • gas: QUANTITY - (optional, default: 90000) Integer of the gas provided for the transaction execution. It will return unused gas.
  • gasPrice: QUANTITY - (optional, default: 0) Integer of the gasPrice used for each paid gas
  • value: QUANTITY - (optional) Integer of the value sent with this transaction
  • data: DATA - The compiled code of a contract OR the hash of the invoked method signature and encoded parameters. For details see Ethereum Contract ABI
  • nonce: QUANTITY - (optional) Integer of a nonce. This allows to overwrite your own pending transactions that use the same nonce.
Example Parameters​
params: [
  {
    from: "0xb60e8dd61c5d32be8058bb8eb970870f07233155",
    to: "0xd46e8dd67c5d32be8058bb8eb970870f07244567",
    gas: "0x76c0", // 30400
    gasPrice: "0x9184e72a000", // 10000000000000
    value: "0x9184e72a", // 2441406250
    data: "0xd46e8dd67c5d32be8d46e8dd67c5d32be8058bb8eb970870f072445675058bb8eb970870f072445675",
  },
];
Returns​

DATA, 32 Bytes - the transaction hash, or the zero hash if the transaction is not yet available.

Use eth_getTransactionReceipt to get the contract address, after the transaction was mined, when you created a contract.

Example​
// Request
curl -X POST --data '{"jsonrpc":"2.0","method":"eth_sendTransaction","params":[{see above}],"id":1}'

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

eth_sendRawTransaction​

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

Parameters​
  1. DATA, The signed transaction data.
Example Parameters​
params: [
  "0xd46e8dd67c5d32be8d46e8dd67c5d32be8058bb8eb970870f072445675058bb8eb970870f072445675",
];
Returns​

DATA, 32 Bytes - the transaction hash, or the zero hash if the transaction is not yet available.

Use eth_getTransactionReceipt to get the contract address, after the transaction was mined, when you created a contract.

Example​
// Request
curl -X POST --data '{"jsonrpc":"2.0","method":"eth_sendRawTransaction","params":[{see above}],"id":1}'

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

eth_call​

Executes a new message call immediately without creating a transaction on the block chain.

Parameters​
  1. Object - The transaction call object
  • from: DATA, 20 Bytes - (optional) The address the transaction is sent from.
  • to: DATA, 20 Bytes - The address the transaction is directed to.
  • gas: QUANTITY - (optional) Integer of the gas provided for the transaction execution. eth_call consumes zero gas, but this parameter may be needed by some executions.
  • gasPrice: QUANTITY - (optional) Integer of the gasPrice used for each paid gas
  • value: QUANTITY - (optional) Integer of the value sent with this transaction
  • data|input: DATA - (optional) Hash of the method signature and encoded parameters. For details see Ethereum Contract ABI in the Solidity documentation
  1. QUANTITY|TAG - integer block number, or the string "latest", "earliest" or "pending", see the default block parameter
Example Parameters​
params: [
  {
    from: "0xb60e8dd61c5d32be8058bb8eb970870f07233155",
    to: "0xd46e8dd67c5d32be8058bb8eb970870f07244567",
  },
  "latest",
];
Returns​

DATA - the return value of executed contract.

Example​
// Request
curl -X POST --data '{"jsonrpc":"2.0","method":"eth_call","params":[{see above}],"id":1}'

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

// In case of REVERT error
{
   "jsonrpc":"2.0",
   "id":1,
   "error":{
      "code":-32015,
      "message":"VM Exception while processing transaction: revert reason",
      "data":"0x08c379a..."
   }
}

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.

Note that when eth_estimateGas is called, the node simulates the transaction execution without broadcasting it to the network. The simulation runs through the entire transaction process as if it were being executed, including checking for sufficient balance, contract code execution, etc. During the simulation, the method calculates the exact amount of gas that would be consumed by the transaction if it were to be executed on the blockchain. The estimated gas amount is returned, helping users set an appropriate gas limit for the actual transaction.

There is a difference in Rootstock compared to Ethereum, and it is that if one of the steps of the simulated transaction fails, the node will return the gas estimation needed for the transaction, while on Ethereum, the node will return an error instead of the gas estimation.

You can see this behavior on the following example, where we call eth_estimateGas for a transaction that would be executed from an address without enough balance.

Example:

{
    "jsonrpc":"2.0",
    "method":"eth_estimateGas",
    "params":[
        {"from": "0xb60e8dd61c5d32be8058bb8eb970870f07233155",
        "to": "0xd46e8dd67c5d32be8058bb8eb970870f07244567",
        "gas": "0x76c0",
        "gasPrice": "0x9184e72a000",
        "value": "0x9184e72a",
        "data": "0xd46e8dd67c5d32be8d46e8dd67c5d32be8058bb8eb970870f072445675058bb8eb970870f072445675"},
        "latest"
    ],
    "id":0
}

Response on Rootstock:

{
    "jsonrpc": "2.0",
    "id": 0,
    "result": "0x5498"
}

Response on Ethereum:

{
    "jsonrpc": "2.0",
    "id": 0,
    "error": {
        "code": -32000,
        "message": "insufficient funds for transfer"
    }
}
Parameters​

See eth_call parameters, expect that all properties are optional. If no gas limit is specified geth uses the block gas limit from the pending block as an upper bound. As a result the returned estimate might not be enough to executed the call/transaction when the amount of gas is higher than the pending block gas limit.

Returns​

QUANTITY - the amount of gas used.

Example​
// Request
curl -X POST --data '{"jsonrpc":"2.0","method":"eth_estimateGas","params":[{see above}],"id":1}'

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

eth_getBlockByHash​

Returns information about a block by hash.

Parameters​
  1. DATA, 32 Bytes - Hash of a block.
  2. Boolean - If true it returns the full transaction objects, if false only the hashes of the transactions.
Example Parameters​
params: [
  "0xe670ec64341771606e55d6b4ca35a1a6b75ee3d5145a99d05921026d1527331",
  true,
];
Returns​

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

  • number: QUANTITY - the block number. null when its pending block.
  • hash: DATA, 32 Bytes - hash of the block. null when its pending block.
  • parentHash: DATA, 32 Bytes - hash of the parent block.
  • nonce: DATA, 8 Bytes - hash of the generated proof-of-work. null when its pending block.
  • sha3Uncles: DATA, 32 Bytes - SHA3 of the uncles data in the block.
  • logsBloom: DATA, 256 Bytes - the bloom filter for the logs of the block. null when its pending block.
  • transactionsRoot: DATA, 32 Bytes - the root of the transaction trie of the block.
  • stateRoot: DATA, 32 Bytes - the root of the final state trie of the block.
  • receiptsRoot: DATA, 32 Bytes - the root of the receipts trie of the block.
  • miner: DATA, 20 Bytes - the address of the beneficiary to whom the mining rewards were given.
  • difficulty: QUANTITY - integer of the difficulty for this block.
  • cumulativeDifficulty: QUANTITY - integer of the difficulty for this block plus its uncles' difficulties.
  • totalDifficulty: QUANTITY - integer of the total difficulty of the chain until this block.
  • extraData: DATA - the "extra data" field of this block.
  • size: QUANTITY - integer the size of this block in bytes.
  • gasLimit: QUANTITY - the maximum gas allowed in 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.
  • transactions: Array - Array of transaction objects, or 32 Bytes transaction hashes depending on the last given parameter.
  • uncles: Array - Array of uncle hashes.
Example​
// Request
curl -X POST --data '{"jsonrpc":"2.0","method":"eth_getBlockByHash","params":["0xe670ec64341771606e55d6b4ca35a1a6b75ee3d5145a99d05921026d1527331", true],"id":1}'

// Result
{
"id":1,
"jsonrpc":"2.0",
"result": {
    "number": "0x1b4", // 436
    "hash": "0xe670ec64341771606e55d6b4ca35a1a6b75ee3d5145a99d05921026d1527331",
    "parentHash": "0x9646252be9520f6e71339a8df9c55e4d7619deeb018d2a3f2d21fc165dde5eb5",
    "nonce": "0xe04d296d2460cfb8472af2c5fd05b5a214109c25688d3704aed5484f9a7792f2",
    "sha3Uncles": "0x1dcc4de8dec75d7aab85b567b6ccd41ad312451b948a7413f0a142fd40d49347",
    "logsBloom": "0xe670ec64341771606e55d6b4ca35a1a6b75ee3d5145a99d05921026d1527331",
    "transactionsRoot": "0x56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421",
    "stateRoot": "0xd5855eb08b3387c0af375e9cdb6acfc05eb8f519e419b874b6ff2ffda7ed1dff",
    "miner": "0x4e65fda2159562a496f9f3522f89122a3088497a",
    "difficulty": "0x027f07", // 163591
    "cumulativeDifficulty": "0x027f07", // 163591
    "totalDifficulty":  "0x027f07", // 163591
    "extraData": "0x0000000000000000000000000000000000000000000000000000000000000000",
    "size":  "0x027f07", // 163591
    "gasLimit": "0x9f759", // 653145
    "gasUsed": "0x9f759", // 653145
    "timestamp": "0x54e34e8e" // 1424182926
    "transactions": [{...},{ ... }]
    "uncles": ["0x1606e5...", "0xd5145a9..."]
  }
}

eth_getBlockByNumber​

Returns information about a block by block number.

Parameters​
  1. QUANTITY|TAG - integer of a block number, or the string "earliest", "latest" or "pending", as in the default block parameter.
  2. Boolean - If true it returns the full transaction objects, if false only the hashes of the transactions.
Example Parameters​
params: [
  "0x1b4", // 436
  true,
];
Returns​

See eth_getBlockByHash

Example​
// Request
curl -X POST --data '{"jsonrpc":"2.0","method":"eth_getBlockByNumber","params":["0x1b4", true],"id":1}'

Result see eth_getBlockByHash

eth_getTransactionByHash​

Returns the information about a transaction requested by transaction hash.

Parameters​
  1. DATA, 32 Bytes - hash of a transaction
Example Parameters​
params: ["0x88df016429689c079f3b2f6ad39fa052532c56795b733da78a91ebe6a713944b"];
Returns​

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

  • blockHash: DATA, 32 Bytes - hash of the block where this transaction was in. null when its pending.
  • blockNumber: QUANTITY - block number where this transaction was in. null when its pending.
  • from: DATA, 20 Bytes - address of the sender.
  • gas: QUANTITY - gas provided by the sender.
  • gasPrice: QUANTITY - gas price provided by the sender in Wei.
  • hash: DATA, 32 Bytes - hash of the transaction.
  • input: DATA - the data send along with the transaction.
  • nonce: QUANTITY - the number of transactions made by the sender prior to this one.
  • to: DATA, 20 Bytes - address of the receiver. null when its a contract creation transaction.
  • transactionIndex: QUANTITY - integer of the transaction's index position in the block. null when its pending.
  • value: QUANTITY - value transferred in Wei.
  • v: QUANTITY - ECDSA recovery id
  • r: QUANTITY - ECDSA signature r
  • s: QUANTITY - ECDSA signature s
Example​
// Request
curl -X POST --data '{"jsonrpc":"2.0","method":"eth_getTransactionByHash","params":["0x88df016429689c079f3b2f6ad39fa052532c56795b733da78a91ebe6a713944b"],"id":1}'

// Result
{
  "jsonrpc":"2.0",
  "id":1,
  "result":{
    "blockHash":"0x1d59ff54b1eb26b013ce3cb5fc9dab3705b415a67127a003c3e61eb445bb8df2",
    "blockNumber":"0x5daf3b", // 6139707
    "from":"0xa7d9ddbe1f17865597fbd27ec712455208b6b76d",
    "gas":"0xc350", // 50000
    "gasPrice":"0x4a817c800", // 20000000000
    "hash":"0x88df016429689c079f3b2f6ad39fa052532c56795b733da78a91ebe6a713944b",
    "input":"0x68656c6c6f21",
    "nonce":"0x15", // 21
    "to":"0xf02c1c8e6114b1dbe8937a39260b5b0a374432bb",
    "transactionIndex":"0x41", // 65
    "value":"0xf3dbb76162000", // 4290000000000000
    "v":"0x25", // 37
    "r":"0x1b5e176d927f8e9ab405058b2d2457392da3e20f328b16ddabcebc33eaac5fea",
    "s":"0x4ba69724e8f69de52f0125ad8b3c5c2cef33019bac3249e2c0a2192766d1721c"
  }
}

eth_getTransactionByBlockHashAndIndex​

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

Parameters​
  1. DATA, 32 Bytes - hash of a block.
  2. QUANTITY - integer of the transaction index position.
Example Parameters​
params: [
  "0xe670ec64341771606e55d6b4ca35a1a6b75ee3d5145a99d05921026d1527331",
  "0x0", // 0
];
Returns​

See eth_getTransactionByHash

Example​
// Request
curl -X POST --data '{"jsonrpc":"2.0","method":"eth_getTransactionByBlockHashAndIndex","params":["0xc6ef2fc5426d6ad6fd9e2a26abeab0aa2411b7ab17f30a99d3cb96aed1d1055b", "0x0"],"id":1}'

Result see eth_getTransactionByHash

eth_getTransactionByBlockNumberAndIndex​

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

Parameters​
  1. QUANTITY|TAG - a block number, or the string "earliest", "latest" or "pending", as in the default block parameter.
  2. QUANTITY - the transaction index position.
Example Parameters​
params: [
  "0x29c", // 668
  "0x0", // 0
];
Returns​

See eth_getTransactionByHash

Example​
// Request
curl -X POST --data '{"jsonrpc":"2.0","method":"eth_getTransactionByBlockNumberAndIndex","params":["0x29c", "0x0"],"id":1}'

Result see eth_getTransactionByHash

eth_getTransactionReceipt​

Returns the receipt of a transaction by transaction hash.

Note That the receipt is not available for pending transactions.

Parameters​
  1. DATA, 32 Bytes - hash of a transaction
Example Parameters​
params: ["0xb903239f8543d04b5dc1ba6579132b143087c68db1b2168786408fcbce568238"];
Returns​

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

  • transactionHash : DATA, 32 Bytes - hash of the transaction.
  • transactionIndex: QUANTITY - integer of the transaction's index position in the block.
  • blockHash: DATA, 32 Bytes - hash of the block where this transaction was in.
  • blockNumber: QUANTITY - block number where this transaction was in.
  • from: DATA, 20 Bytes - address of the sender.
  • to: DATA, 20 Bytes - address of the receiver. null when it's a contract creation transaction.
  • cumulativeGasUsed : QUANTITY - The total amount of gas used when this transaction was executed in the block.
  • gasUsed : QUANTITY - The amount of gas used by this specific transaction alone.
  • contractAddress : DATA, 20 Bytes - The contract address created, if the transaction was a contract creation, otherwise null.
  • logs: Array - Array of log objects, which this transaction generated.
  • logsBloom: DATA, 256 Bytes - Bloom filter for light clients to quickly retrieve related logs.

It also returns either :

  • root : DATA 32 bytes of post-transaction stateroot (pre Byzantium)
  • status: QUANTITY either 1 (success) or 0 (failure)
Example​
// Request
curl -X POST --data '{"jsonrpc":"2.0","method":"eth_getTransactionReceipt","params":["0xb903239f8543d04b5dc1ba6579132b143087c68db1b2168786408fcbce568238"],"id":1}'

// Result
{
"id":1,
"jsonrpc":"2.0",
"result": {
     transactionHash: '0xb903239f8543d04b5dc1ba6579132b143087c68db1b2168786408fcbce568238',
     transactionIndex:  '0x1', // 1
     blockNumber: '0xb', // 11
     blockHash: '0xc6ef2fc5426d6ad6fd9e2a26abeab0aa2411b7ab17f30a99d3cb96aed1d1055b',
     cumulativeGasUsed: '0x33bc', // 13244
     gasUsed: '0x4dc', // 1244
     contractAddress: '0xb60e8dd61c5d32be8058bb8eb970870f07233155', // or null, if none was created
     logs: [{
         // logs as returned by getFilterLogs, etc.
     }, ...],
     logsBloom: "0x00...0", // 256 byte bloom filter
     status: '0x1'
  }
}

eth_pendingTransactions​

Returns the pending transactions submitted by the node operator.

Parameters​

none

Returns​

Array - A list of pending transactions submitted by the node operator.

Example​
// Request
curl -X POST --data '{"jsonrpc":"2.0","method":"eth_pendingTransactions","params":[],"id":1}'

// Result
{
"id":1,
"jsonrpc":"2.0",
"result": [{
    blockHash: '0x0000000000000000000000000000000000000000000000000000000000000000',
    blockNumber: null,
    from: '0x28bdb9c230f4d5e45435e4d006326ee32e46cb31',
    gas: '0x204734',
    gasPrice: '0x4a817c800',
    hash: '0x8dfa6a59307a490d672494a171feee09db511f05e9c097e098edc2881f9ca4f6',
    input: '0x6080604052600',
    nonce: '0x12',
    to: null,
    transactionIndex: '0x0',
    value: '0x0',
    v: '0x3d',
    r: '0xaabc9ddafffb2ae0bac4107697547d22d9383667d9e97f5409dd6881ce08f13f',
    s: '0x69e43116be8f842dcd4a0b2f760043737a59534430b762317db21d9ac8c5034',
    type: '0x0'
   },....,{
    blockHash: '0x0000000000000000000000000000000000000000000000000000000000000000',
    blockNumber: null,
    from: '0x28bdb9c230f4d5e45435e4d006326ee32e487b31',
    gas: '0x205940',
    gasPrice: '0x4a817c800',
    hash: '0x8e4340ea3983d86e4b6c44249362f716ec9e09849ef9b6e3321140581d2e4dac',
    input: '0xe4b6c4424936',
    nonce: '0x14',
    to: null,
    transactionIndex: '0x0',
    value: '0x0',
    v: '0x3d',
    r: '0x1ec191ef20b0e9628c4397665977cbe7a53a263c04f6f185132b77fa0fd5ca44',
    s: '0x8a58e00c63e05cfeae4f1cf19f05ce82079dc4d5857e2cc281b7797d58b5faf',
    type: '0x0'
   }]
}

eth_getUncleByBlockHashAndIndex​

Returns information about an uncle of a block by hash and the uncle index position.

Parameters​
  1. DATA, 32 Bytes - hash a block.
  2. QUANTITY - the uncle's index position.
params: [
  "0xc6ef2fc5426d6ad6fd9e2a26abeab0aa2411b7ab17f30a99d3cb96aed1d1055b",
  "0x0", // 0
];
Returns​

See eth_getBlockByHash

Example​
// Request
curl -X POST --data '{"jsonrpc":"2.0","method":"eth_getUncleByBlockHashAndIndex","params":["0xc6ef2fc5426d6ad6fd9e2a26abeab0aa2411b7ab17f30a99d3cb96aed1d1055b", "0x0"],"id":1}'

Result see eth_getBlockByHash

Note: An uncle doesn't contain individual transactions.

eth_getUncleByBlockNumberAndIndex​

Returns information about a uncle of a block by number and uncle index position.

Parameters​
  1. QUANTITY|TAG - a block number, or the string "earliest", "latest" or "pending", as in the default block parameter.
  2. QUANTITY - the uncle's index position.
Example Parameters​
params: [
  "0x29c", // 668
  "0x0", // 0
];
Returns​

See eth_getBlockByHash

Note: An uncle doesn't contain individual transactions.

Example​
// Request
curl -X POST --data '{"jsonrpc":"2.0","method":"eth_getUncleByBlockNumberAndIndex","params":["0x29c", "0x0"],"id":1}'

Result see eth_getBlockByHash

eth_newFilter​

Creates a filter object, based on filter options, to notify when the state changes (logs). To check if the state has changed, call eth_getFilterChanges.

A note on specifying topic filters:​

Topics are order-dependent. A transaction with a log with topics [A, B] will be matched by the following topic filters:

  • [] "anything"
  • [A] "A in first position (and anything after)"
  • [null, B] "anything in first position AND B in second position (and anything after)"
  • [A, B] "A in first position AND B in second position (and anything after)"
  • [[A, B], [A, B]] "(A OR B) in first position AND (A OR B) in second position (and anything after)"
Parameters​
  1. Object - The filter options:
  • fromBlock: QUANTITY|TAG - (optional, default: "latest") Integer block number, or "latest" for the last mined block or "pending", "earliest" for not yet mined transactions.
  • toBlock: QUANTITY|TAG - (optional, default: "latest") Integer block number, or "latest" for the last mined block or "pending", "earliest" for not yet mined transactions.
  • address: DATA|Array, 20 Bytes - (optional) Contract address or a list of addresses from which logs should originate.
  • topics: Array of DATA, - (optional) Array of 32 Bytes DATA topics. Topics are order-dependent. Each topic can also be an array of DATA with "or" options.
Example Parameters​
params: [
  {
    fromBlock: "0x1",
    toBlock: "0x2",
    address: "0x8888f1f195afa192cfee860698584c030f4c9db1",
    topics: [
      "0x000000000000000000000000a94f5374fce5edbc8e2a8697c15331677e6ebf0b",
      null,
      [
        "0x000000000000000000000000a94f5374fce5edbc8e2a8697c15331677e6ebf0b",
        "0x0000000000000000000000000aff3454fce5edbc8cca8697c15331677e6ebccc",
      ],
    ],
  },
];
Returns​

QUANTITY - A filter id.

Example​
// Request
curl -X POST --data '{"jsonrpc":"2.0","method":"eth_newFilter","params":[{"topics":["0x0000000000000000000000000000000000000000000000000000000012341234"]}],"id":73}'

// Result
{
  "id":1,
  "jsonrpc": "2.0",
  "result": "0x1" // 1
}

eth_newBlockFilter​

Creates a filter in the node, to notify when a new block arrives. To check if the state has changed, call eth_getFilterChanges.

Parameters​

None

Returns​

QUANTITY - A filter id.

Example​
// Request
curl -X POST --data '{"jsonrpc":"2.0","method":"eth_newBlockFilter","params":[],"id":73}'

// Result
{
  "id":1,
  "jsonrpc":  "2.0",
  "result": "0x1" // 1
}

eth_newPendingTransactionFilter​

Creates a filter in the node, to notify when new pending transactions arrive. To check if the state has changed, call eth_getFilterChanges.

Parameters​

None

Returns​

QUANTITY - A filter id.

Example​
// Request
curl -X POST --data '{"jsonrpc":"2.0","method":"eth_newPendingTransactionFilter","params":[],"id":73}'

// Result
{
  "id":1,
  "jsonrpc":  "2.0",
  "result": "0x1" // 1
}

eth_uninstallFilter​

Uninstalls a filter with given id. Should always be called when watch is no longer needed. Additonally Filters timeout when they aren't requested with eth_getFilterChanges for a period of time.

Parameters​
  1. QUANTITY - The filter id.
Example Parameters​
params: [
  "0xb", // 11
];
Returns​

Boolean - true if the filter was successfully uninstalled, otherwise false.

Example​
// Request
curl -X POST --data '{"jsonrpc":"2.0","method":"eth_uninstallFilter","params":["0xb"],"id":73}'

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

eth_getFilterChanges​

Polling method for a filter, which returns an array of logs which occurred since last poll.

Parameters​
  1. QUANTITY - the filter id.
Example Parameters​
params: [
  "0x16", // 22
];
Returns​

Array - Array of log objects, or an empty array if nothing has changed since last poll.

  • For filters created with eth_newBlockFilter the return are block hashes (DATA, 32 Bytes), e.g. ["0x3454645634534..."].

  • For filters created with eth_newPendingTransactionFilter the return are transaction hashes (DATA, 32 Bytes), e.g. ["0x6345343454645..."].

  • For filters created with eth_newFilter logs are objects with following params:

    • removed: TAG - true when the log was removed, due to a chain reorganization. false if its a valid log.
    • logIndex: QUANTITY - integer of the log index position in the block. null when its pending log.
    • transactionIndex: QUANTITY - integer of the transactions index position log was created from. null when its pending log.
    • transactionHash: DATA, 32 Bytes - hash of the transactions this log was created from. null when its pending log.
    • blockHash: DATA, 32 Bytes - hash of the block where this log was in. null when its pending. null when its pending log.
    • blockNumber: QUANTITY - the block number where this log was in. null when its pending. null when its pending log.
    • address: DATA, 20 Bytes - address from which this log originated.
    • data: DATA - contains the non-indexed arguments of the log.
    • topics: Array of DATA - Array of 0 to 4 32 Bytes DATA of indexed log arguments. (In solidity: The first topic is the hash of the signature of the event (e.g. Deposit(address,bytes32,uint256)), except you declared the event with the anonymous specifier.)
Example​
// Request
curl -X POST --data '{"jsonrpc":"2.0","method":"eth_getFilterChanges","params":["0x16"],"id":73}'

// Result
{
  "id":1,
  "jsonrpc":"2.0",
  "result": [{
    "logIndex": "0x1", // 1
    "blockNumber":"0x1b4", // 436
    "blockHash": "0x8216c5785ac562ff41e2dcfdf5785ac562ff41e2dcfdf829c5a142f1fccd7d",
    "transactionHash":  "0xdf829c5a142f1fccd7d8216c5785ac562ff41e2dcfdf5785ac562ff41e2dcf",
    "transactionIndex": "0x0", // 0
    "address": "0x16c5785ac562ff41e2dcfdf829c5a142f1fccd7d",
    "data":"0x0000000000000000000000000000000000000000000000000000000000000000",
    "topics": ["0x59ebeb90bc63057b6515673c3ecf9438e5058bca0f92585014eced636878c9a5"]
    },{
      ...
    }]
}

eth_getFilterLogs​

Returns an array of all logs matching filter with given id.

Parameters​
  1. QUANTITY - The filter id.
Example Parameters​
params: [
  "0x16", // 22
];
Returns​

See eth_getFilterChanges

Example​
// Request
curl -X POST --data '{"jsonrpc":"2.0","method":"eth_getFilterLogs","params":["0x16"],"id":74}'

Result see eth_getFilterChanges

eth_getLogs​

Returns an array of all logs matching a given filter object.

Parameters​
  1. Object - The filter options:
  • fromBlock: QUANTITY|TAG - (optional, default: "latest") Integer block number, or "latest" for the last mined block or "pending", "earliest" for not yet mined transactions.
  • toBlock: QUANTITY|TAG - (optional, default: "latest") Integer block number, or "latest" for the last mined block or "pending", "earliest" for not yet mined transactions.
  • address: DATA|Array, 20 Bytes - (optional) Contract address or a list of addresses from which logs should originate.
  • topics: Array of DATA, - (optional) Array of 32 Bytes DATA topics. Topics are order-dependent. Each topic can also be an array of DATA with "or" options.
  • blockhash: DATA, 32 Bytes - (optional) With the addition of EIP-234 (Geth >= v1.8.13 or Parity >= v2.1.0), blockHash is a new filter option which restricts the logs returned to the single block with the 32-byte hash blockHash. Using blockHash is equivalent to fromBlock = toBlock = the block number with hash blockHash. If blockHash is present in the filter criteria, then neither fromBlock nor toBlock are allowed.
Example Parameters​
params: [
  {
    topics: [
      "0x000000000000000000000000a94f5374fce5edbc8e2a8697c15331677e6ebf0b",
    ],
  },
];
Returns​

See eth_getFilterChanges

Example​
// Request
curl -X POST --data '{"jsonrpc":"2.0","method":"eth_getLogs","params":[{"topics":["0x000000000000000000000000a94f5374fce5edbc8e2a8697c15331677e6ebf0b"]}],"id":74}'

Result see eth_getFilterChanges

eth_getWork​

Returns the hash of the current block, the seedHash, and the boundary condition to be met ("target").

Parameters​

none

Returns​

Array - Array with the following properties:

  1. DATA, 32 Bytes - current block header pow-hash
  2. DATA, 32 Bytes - the seed hash used for the DAG.
  3. DATA, 32 Bytes - the boundary condition ("target"), 2^256 / difficulty.
Example​
// Request
curl -X POST --data '{"jsonrpc":"2.0","method":"eth_getWork","params":[],"id":73}'

// Result
{
  "id":1,
  "jsonrpc":"2.0",
  "result": [
      "0x1234567890abcdef1234567890abcdef1234567890abcdef1234567890abcdef",
      "0x5EED00000000000000000000000000005EED0000000000000000000000000000",
      "0xd1ff1c01710000000000000000000000d1ff1c01710000000000000000000000"
    ]
}

eth_submitWork​

Used for submitting a proof-of-work solution.

Parameters​
  1. DATA, 8 Bytes - The nonce found (64 bits)
  2. DATA, 32 Bytes - The header's pow-hash (256 bits)
  3. DATA, 32 Bytes - The mix digest (256 bits)
Example Parameters​
params: [
  "0x0000000000000001",
  "0x1234567890abcdef1234567890abcdef1234567890abcdef1234567890abcdef",
  "0xD1FE5700000000000000000000000000D1FE5700000000000000000000000000",
];
Returns​

Boolean - returns true if the provided solution is valid, otherwise false.

Example​
// Request
curl -X POST --data '{"jsonrpc":"2.0", "method":"eth_submitWork", "params":["0x0000000000000001", "0x1234567890abcdef1234567890abcdef1234567890abcdef1234567890abcdef", "0xD1GE5700000000000000000000000000D1GE5700000000000000000000000000"],"id":73}'

// Result
{
  "id":73,
  "jsonrpc":"2.0",
  "result": true
}

eth_submitHashrate​

Used for submitting mining hashrate.

Parameters​
  1. Hashrate, a hexadecimal string representation (32 bytes) of the hash rate
  2. ID, String - A random hexadecimal(32 bytes) ID identifying the client
Example Parameters​
params: [
  "0x0000000000000000000000000000000000000000000000000000000000500000",
  "0x59daa26581d0acd1fce254fb7e85952f4c09d0915afd33d3886cd914bc7d283c",
];
Returns​

Boolean - returns true if submitting went through succesfully and false otherwise.

Example​
// Request
curl -X POST --data '{"jsonrpc":"2.0", "method":"eth_submitHashrate", "params":["0x0000000000000000000000000000000000000000000000000000000000500000", "0x59daa26581d0acd1fce254fb7e85952f4c09d0915afd33d3886cd914bc7d283c"],"id":73}'

// Result
{
  "id":73,
  "jsonrpc":"2.0",
  "result": true
}

eth_getProof​

Returns the account- and storage-values of the specified account including the Merkle-proof.

Parameters​
  1. DATA, 20 bytes - address of the account or contract
  2. ARRAY, 32 Bytes - array of storage-keys which should be proofed and included. See eth_getStorageAt
  3. QUANTITY|TAG - integer block number, or the string "latest" or "earliest", see the default block parameter
Example Parameters​
params: ["0x1234567890123456789012345678901234567890",["0x0000000000000000000000000000000000000000000000000000000000000000","0x0000000000000000000000000000000000000000000000000000000000000001"],"latest"]
Returns​

Returns Object - A account object:

balance: QUANTITY - the balance of the account. See eth_getBalance

codeHash: DATA, 32 Bytes - hash of the code of the account. For a simple Account without code it will return "0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470"

nonce: QUANTITY, - nonce of the account. See eth_getTransactionCount

storageHash: DATA, 32 Bytes - SHA3 of the StorageRoot. All storage will deliver a MerkleProof starting with this rootHash.

accountProof: ARRAY - Array of rlp-serialized MerkleTree-Nodes, starting with the stateRoot-Node, following the path of the SHA3 (address) as key.

storageProof: ARRAY - Array of storage-entries as requested. Each entry is a object with these properties:

key: QUANTITY - the requested storage key value: QUANTITY - the storage value proof: ARRAY - Array of rlp-serialized MerkleTree-Nodes, starting with the storageHash-Node, following the path of the SHA3 (key) as path.

Example​
// Request
curl -X POST --data '{"jsonrpc":"2.0","method":"eth_getProof","params":["0x1234567890123456789012345678901234567890",["0x0000000000000000000000000000000000000000000000000000000000000000","0x0000000000000000000000000000000000000000000000000000000000000001"],"latest"],"id":1}' -H "Content-type:application/json" http://localhost:8545

// Result
{
  "jsonrpc": "2.0",
  "id": 1,
  "result": {
    "address": "0x1234567890123456789012345678901234567890",
    "accountProof": [
      "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",
      "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",
      "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",
      "0xf851808080a009833150c367df138f1538689984b8a84fc55692d3d41fe4d1e5720ff5483a6980808080808080808080a0a319c1c415b271afc0adcb664e67738d103ac168e0bc0b7bd2da7966165cb9518080"
    ],
    "balance": "0x0",
    "codeHash": "0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470",
    "nonce": "0x0",
    "storageHash": "0x56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421",
    "storageProof": [
      {
        "key": "0x0000000000000000000000000000000000000000000000000000000000000000",
        "value": "0x0",
        "proof": []
      },
      {
        "key": "0x0000000000000000000000000000000000000000000000000000000000000001",
        "value": "0x0",
        "proof": []
      }
    ]
  }
}
Last updated on by Owanate Amachree

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