etd_protocolVersion#

Returns the current etdereum protocol version.

Parameters#

none

Returns#

String - The current etdereum protocol version

Example#

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

// Result
{
  "id":67,
  "jsonrpc": "2.0",
  "result": "54"
}

etd_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 etd_blockNumber
• highestBlock: QUANTITY - The estimated highest block

Example#

// Request
curl -X POST --data '{"jsonrpc":"2.0","method":"etd_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
}

etd_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":"etd_coinbase","params":[],"id":64}'

// Result
{
  "id":64,
  "jsonrpc": "2.0",
  "result": "0x407d73d8a49eeb85d32cf465507dd71d507100c1"
}

etd_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":"etd_mining","params":[],"id":71}'

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

etd_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":"etd_hashrate","params":[],"id":71}'

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

etd_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":"etd_gasPrice","params":[],"id":73}'

// Result
{
  "id":73,
  "jsonrpc": "2.0",
  "result": "0x1dfd14000" // 8049999872 Wei
}

etd_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":"etd_accounts","params":[],"id":1}'

// Result
{
  "id":1,
  "jsonrpc": "2.0",
  "result": ["0x407d73d8a49eeb85d32cf465507dd71d507100c1"]
}

etd_getBalance#

Returns the balance of the account of given address.

Parameters#

1. DATA, 20 Bytes - address to check for balance.
2. QUANTITY|TAG - integer block number, or the string "latest", "earliest" or "pending", see the default block parameter

params: [
   '0x407d73d8a49eeb85d32cf465507dd71d507100c1',
   'latest'
]

Returns#

QUANTITY - integer of the current balance in wei.

Example#

// Request
curl -X POST --data '{"jsonrpc":"2.0","method":"etd_getBalance","params":["0x407d73d8a49eeb85d32cf465507dd71d507100c1", "latest"],"id":1}'

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

etd_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 - integer block number, or the string "latest", "earliest" or "pending", see the default block parameter

Returns#

DATA - the value at this storage position.

Example#

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

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

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

Retrieving the value of pos0 is straight forward:

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

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

etd_getTransactionCount#

Returns the number of transactions sent from an address.

Parameters#

1. DATA, 20 Bytes - address.
2. QUANTITY|TAG - integer block number, or the string "latest", "earliest" or "pending", see the default block parameter

params: [
   '0x407d73d8a49eeb85d32cf465507dd71d507100c1',
   '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":"etd_getTransactionCount","params":["0x407d73d8a49eeb85d32cf465507dd71d507100c1","latest"],"id":1}'

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

etd_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

params: [
   '0xb903239f8543d04b5dc1ba6579132b143087c68db1b2168786408fcbce568238'
]

Returns#

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

Example#

// Request
curl -X POST --data '{"jsonrpc":"2.0","method":"etd_getBlockTransactionCountByHash","params":["0xb903239f8543d04b5dc1ba6579132b143087c68db1b2168786408fcbce568238"],"id":1}'

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

etd_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", see the default block parameter

params: [
   '0xe8', // 232
]

Returns#

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

Example#

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

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

etd_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

params: [
   '0xb903239f8543d04b5dc1ba6579132b143087c68db1b2168786408fcbce568238'
]

Returns#

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

Example#

// Request
curl -X POST --data '{"jsonrpc":"2.0","method":"etd_getUncleCountByBlockHash","params":["0xb903239f8543d04b5dc1ba6579132b143087c68db1b2168786408fcbce568238"],"id":1}'

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

etd_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":"etd_getUncleCountByBlockNumber","params":["0xe8"],"id":1}'

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

etd_getCode#

Returns code at a given address.

Parameters#

1. DATA, 20 Bytes - address
2. QUANTITY|TAG - integer block number, or the string "latest", "earliest" or "pending", see the default block parameter

params: [
   '0xa94f5374fce5edbc8e2a8697c15331677e6ebf0b',
   '0x2'  // 2
]

Returns#

DATA - the code from the given address.

Example#

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

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

etd_sign#

The sign method calculates an etdereum specific signature with: sign(keccak256("\x19etdereum Signed Message:\n" + len(message) + message))).

By adding a prefix to the message makes the calculated signature recognisable as an etdereum 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":"etd_sign","params":["0x9b2055d370f73ec7d8a03e965129118dc8f5bf83", "0xdeadbeaf"],"id":1}'

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

An example how to use solidity ecrecover to verify the signature calculated with etd_sign can be found here. The contract is deployed on the testnet Ropsten and Rinkeby.

etd_signTransaction#

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

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 directed to.
   *gas: QUANTITY - (optional, default: 90000) Integer of the gas provided for the transaction execution. It will return unused gas.
   *gasPrice: QUANTITY - (optional, default: To-Be-Determined) Integer of the gasPrice used for each paid gas, in Wei.
   *value: QUANTITY - (optional) Integer of the value sent with this transaction, in Wei.
   *data: DATA - The compiled code of a contract OR the hash of the invoked method signature and encoded parameters. For details see etdereum Contract ABI.
   *nonce: QUANTITY - (optional) Integer of a nonce. This allows to overwrite your own pending transactions that use the same nonce.

params: [{
  "from": "0xb60e8dd61c5d32be8058bb8eb970870f07233155",
  "to": "0xd46e8dd67c5d32be8058bb8eb970870f07244567",
  "gas": "0x76c0", // 30400
  "gasPrice": "0x9184e72a000", // 10000000000000
  "value": "0x9184e72a", // 2441406250
  "data": "0xd46e8dd67c5d32be8d46e8dd67c5d32be8058bb8eb970870f072445675058bb8eb970870f072445675"
}]

Returns#

DATA, The signed transaction object.

Example#

// Request
curl -X POST --data '{
    "id": 1,
    "jsonrpc": "2.0",
    "method": "etd_signTransaction",
    "params": [{
        "data": "0xd46e8dd67c5d32be8d46e8dd67c5d32be8058bb8eb970870f072445675058bb8eb970870f072445675",
        "from": "0xb60e8dd61c5d32be8058bb8eb970870f07233155",
        "gas": "0x76c0",
        "gasPrice": "0x9184e72a000",
        "to": "0xd46e8dd67c5d32be8058bb8eb970870f07244567",
        "value": "0x9184e72a"
    }]
}'

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

etd_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 send from.
   • to: DATA, 20 Bytes - (optional when creating new contract) The address the transaction is directed to.
   • gas: QUANTITY - (optional, default: 90000) Integer of the gas provided for the transaction execution. It will return unused gas.
   • gasPrice: QUANTITY - (optional, default: To-Be-Determined) 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 etdereum Contract ABI.
   • nonce: QUANTITY - (optional) Integer of a nonce. This allows to overwrite your own pending transactions that use the same nonce.

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 etd_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":"etd_sendTransaction","params":[{see above}],"id":1}'

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

etd_sendRawTransaction#

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

Parameters#

DATA, The signed transaction data.

params: ["0xd46e8dd67c5d32be8d46e8dd67c5d32be8058bb8eb970870f072445675058bb8eb970870f072445675"]

Returns#

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

Use etd_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":"etd_sendRawTransaction","params":[{see above}],"id":1}'

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

etd_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. etd_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: DATA - (optional) Hash of the method signature and encoded parameters. For details see etdereum Contract ABI in the Solidity documentation.
2. QUANTITY|TAG - integer block number, or the string "latest", "earliest" or "pending", see the default block parameter.

Returns#

DATA - the return value of executed contract.

Example#

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

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

etd_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#

See etd_call parameters, expect that all properties are optional. If no gas limit is specified getd 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":"etd_estimateGas","params":[{see above}],"id":1}'

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

etd_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.

params: [
   '0xdc0818cf78f21a8e70579cb46a43643f78291264dda342ae31049421c82d21ae',
   false
]

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.
• 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":"etd_getBlockByHash","params":["0xdc0818cf78f21a8e70579cb46a43643f78291264dda342ae31049421c82d21ae", false],"id":1}'

// Result
{
{
  "jsonrpc": "2.0",
  "id": 1,
  "result": {
    "difficulty": "0x4ea3f27bc",
    "extraData": "0x476574682f4c5649562f76312e302e302f6c696e75782f676f312e342e32",
    "gasLimit": "0x1388",
    "gasUsed": "0x0",
    "hash": "0xdc0818cf78f21a8e70579cb46a43643f78291264dda342ae31049421c82d21ae",
    "logsBloom": "0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
    "miner": "0xbb7b8287f3f0a933474a79eae42cbca977791171",
    "mixHash": "0x4fffe9ae21f1c9e15207b1f472d5bbdd68c9595d461666602f2be20daf5e7843",
    "nonce": "0x689056015818adbe",
    "number": "0x1b4",
    "parentHash": "0xe99e022112df268087ea7eafaf4790497fd21dbeeb6bd7a1721df161a6657a54",
    "receiptsRoot": "0x56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421",
    "sha3Uncles": "0x1dcc4de8dec75d7aab85b567b6ccd41ad312451b948a7413f0a142fd40d49347",
    "size": "0x220",
    "stateRoot": "0xddc8b0234c2e0cad087c8b389aa7ef01f7d79b2570bccb77ce48648aa61c904d",
    "timestamp": "0x55ba467c",
    "totalDifficulty": "0x78ed983323d",
    "transactions": [
    ],
    "transactionsRoot": "0x56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421",
    "uncles": [
    ]
  }
}

etd_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.

params: [
   '0x1b4', // 436
   true
]

Returns

See etd_getBlockByHash

Example#

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

Result see etd_getBlockByHash

etd_getTransactionByHash#

Returns the information about a transaction requested by transaction hash.

Parameters#

1. DATA, 32 Bytes - hash of a transaction

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 transactions index position in the block. null when its pending.
• value: QUANTITY - value transferred in Wei.
• v: QUANTITY - ECDSA recovery id
• r: DATA, 32 Bytes - ECDSA signature r
• s: DATA, 32 Bytes - ECDSA signature s

Example#

// Request
curl -X POST --data '{"jsonrpc":"2.0","method":"etd_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"
  }
}

etd_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.

params: [
   '0xe670ec64341771606e55d6b4ca35a1a6b75ee3d5145a99d05921026d1527331',
   '0x0' // 0
]

Returns#

See etd_getTransactionByHash

Example#

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

Result see etd_getTransactionByHash

etd_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.

params: [
   '0x29c', // 668
   '0x0' // 0
]

Returns#

See etd_getTransactionByHash

Example#

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

Result see etd_getTransactionByHash

etd_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

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 transactions 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 its 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":"etd_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'
  }
}

etd_getUncleByBlockHashAndIndex#

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

Parameters#

1. DATA, 32 Bytes - The hash of a block.
2. QUANTITY - The uncle’s index position.

params: [
   '0xc6ef2fc5426d6ad6fd9e2a26abeab0aa2411b7ab17f30a99d3cb96aed1d1055b',
   '0x0' // 0
]

Returns#

See etd_getTransactionByHash

Example#

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

Result see etd_getTransactionByHash

Note: An uncle doesn’t contain individual transactions.

etd_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.

params: [
   '0x29c', // 668
   '0x0' // 0
]

Returns#

See etd_getTransactionByHash

Note: An uncle doesn’t contain individual transactions.

Example#

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

Result see etd_getTransactionByHash

etd_getCompilers#

Returns a list of available compilers in the client.

Parameters#

none

Returns#

Array - Array of available compilers.

Example#

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

// Result
{
  "id":1,
  "jsonrpc": "2.0",
  "result": ["solidity", "lll", "serpent"]
}

etd_compileSolidity#

Returns compiled solidity code.

Parameters#

String - The source code.

params: [
   "contract test { function multiply(uint a) returns(uint d) {   return a * 7;   } }",
]

Returns#

DATA - The compiled source code.

Example#

// Request
curl -X POST --data '{"jsonrpc":"2.0","method":"etd_compileSolidity","params":["contract test { function multiply(uint a) returns(uint d) {   return a * 7;   } }"],"id":1}'

// Result
{
  "id":1,
  "jsonrpc": "2.0",
  "result": {
      "code": "0x605880600c6000396000f3006000357c010000000000000000000000000000000000000000000000000000000090048063c6888fa114602e57005b603d6004803590602001506047565b8060005260206000f35b60006007820290506053565b91905056",
      "info": {
        "source": "contract test {\n   function multiply(uint a) constant returns(uint d) {\n       return a * 7;\n   }\n}\n",
        "language": "Solidity",
        "languageVersion": "0",
        "compilerVersion": "0.9.19",
        "abiDefinition": [
          {
            "constant": true,
            "inputs": [
              {
                "name": "a",
                "type": "uint256"
              }
            ],
            "name": "multiply",
            "outputs": [
              {
                "name": "d",
                "type": "uint256"
              }
            ],
            "type": "function"
          }
        ],
        "userDoc": {
          "methods": {}
        },
        "developerDoc": {
          "methods": {}
        }
      }

}

etd_compileLLL#

Returns compiled LLL code.

Parameters#

1. String - The source code.

params: [
   "(returnlll (suicide (caller)))",
]

Returns#

DATA - The compiled source code.

Example#

// Request
curl -X POST --data '{"jsonrpc":"2.0","method":"etd_compileLLL","params":["(returnlll (suicide (caller)))"],"id":1}'

// Result
{
  "id":1,
  "jsonrpc": "2.0",
  "result": "0x603880600c6000396000f3006001600060e060020a600035048063c6888fa114601857005b6021600435602b565b8060005260206000f35b600081600702905091905056" // the compiled source code
}

etd_compileSerpent#

Returns compiled serpent code.

Parameters#

1. String - The source code.

params: [
   "/* some serpent */",
]

Returns#

DATA - The compiled source code.

Example#

// Request
curl -X POST --data '{"jsonrpc":"2.0","method":"etd_compileSerpent","params":["/* some serpent */"],"id":1}'

// Result
{
  "id":1,
  "jsonrpc": "2.0",
  "result": "0x603880600c6000396000f3006001600060e060020a600035048063c6888fa114601857005b6021600435602b565b8060005260206000f35b600081600702905091905056" // the compiled source code
}

etd_newFilter#

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

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":"etd_newFilter","params":[{"topics":["0x12341234"]}],"id":73}'

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

etd_newBlockFilter#

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

Parameters#

None

Returns#

QUANTITY - A filter id.

Example#

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

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

etd_newPendingTransactionFilter#

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

Parameters#

None

Returns#

QUANTITY - A filter id.

Example#

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

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

etd_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 etd_getFilterChanges. for a period of time.

Parameters#

QUANTITY - The filter id.

params: [
  "0xb" // 11
]

Returns#

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

Example#

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

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

etd_getFilterChanges#

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

Parameters#

1. QUANTITY - the filter id.

params: [
  "0x16" // 22
]

Returns#

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

• For filters created with etd_newBlockFilter the return are block hashes (DATA, 32 Bytes), e.g. ["0x3454645634534..."].
• For filters created with etd_newPendingTransactionFilter the return are transaction hashes (DATA, 32 Bytes), e.g. ["0x6345343454645..."].
• For filters created with etd_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 one or more 32 Bytes 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":"etd_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"]
    },{
      ...
    }]
}

etd_getFilterLogs#

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

Parameters#

1. QUANTITY - The filter id.

params: [
  "0x16" // 22
]

Returns#

See etd_getFilterChanges.

Example#

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

Result see etd_getFilterChanges.

etd_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, future) With the addition of EIP-234, blockHash will be 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 in the filter criteria, then neither fromBlock nor toBlock are allowed.

params: [{
  "topics": ["0x000000000000000000000000a94f5374fce5edbc8e2a8697c15331677e6ebf0b"]
}]

Returns#

See etd_getFilterChanges.

Example#

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

Result see etd_getFilterChanges.

etd_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":"etd_getWork","params":[],"id":73}'

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

etd_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)

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":"etd_submitWork", "params":["0x0000000000000001", "0x1234567890abcdef1234567890abcdef1234567890abcdef1234567890abcdef", "0xD1GE5700000000000000000000000000D1GE5700000000000000000000000000"],"id":73}'

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

etd_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

params: [
  "0x0000000000000000000000000000000000000000000000000000000000500000",
  "0x59daa26581d0acd1fce254fb7e85952f4c09d0915afd33d3886cd914bc7d283c"
]

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

### Example

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

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