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JSON RPC API

Pchain JSON RPC API

JSON is a lightweight data-interchange format. It can represent numbers, strings, ordered sequences of values, and collections of name/value pairs. JSON RPC is a stateless, light-weight remote procedure call (RPC) protocol. Primarily this specification defines several data structures and the rules around their processing. It is transport agnostic in that the concepts can be used within the same process, over sockets, over HTTP, or in many various message passing environments. It uses JSON (RFC 4627) as data format.

JavaScript API

To talk to a pchain node from inside a JavaScript application, use the pweb3 library, which gives a convenient interface for the RPC methods. See the JavaScript API for more.

Java API

To talk to a pchain node from inside a Java application use the pweb3j library.

JSON RPC URL

Default JSON RPC URL

How To Open RPC

You can start pchain with flag –rpc

pchain --rpc

After this, if you want to check the main chain’s current block number, the command will look like this:

curl -X POST --data '{"jsonrpc":"2.0","method":"eth_blockNumber","params":[],"id":1}' localhost:6969/pchain

Or if you want to check the subchain’s current block number, the command will look like this:

curl -X POST --data '{"jsonrpc":"2.0","method":"eth_blockNumber","params":[],"id":1}' localhost:6969/child_0

You can also send requests by Postman, you will need to start pchain with the flag “–rpc –rpcaddr=0.0.0.0”. Be aware, opening your RPC to remote hosts is very dangerous if you keep your account information on your node.

Reference

Pchain Utility RPC

Chain RPC

Epoch RPC

Delegation RPC

Library

web3_clientVersion

Returns the latest software 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.

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.

  • "1": Pchain Mainnet

  • "2": Testnet

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
}

eth_protocolVersion

Returns the current pchain protocol version.

Parameters

none

Returns

String - The current pchain protocol version.

Example

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

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

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

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

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.

params: [
   '0xb903239f8543d04b5dc1ba6579132b143087c68db1b2168786408fcbce568238'
]

Returns

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

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.

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.

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 - 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":"eth_getCode","params":["0xa94f5374fce5edbc8e2a8697c15331677e6ebf0b", "0x2"],"id":1}'

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

eth_sign

The sign method calculates an pchain 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 pchain 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"
}

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

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 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 Pchain 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 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.

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: DATA - (optional) Hash of the method signature and encoded parameters. For details see Pchain Contract ABI

  1. 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":"eth_call","params":[{see above}],"id":1}'

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

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

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.

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.

  • 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
    "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.

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

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: DATA, 32 Bytes - ECDSA signature r

  • s: DATA, 32 Bytes - 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.

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.

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

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_getUncleByBlockHashAndIndex

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

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_getCompilers (DEPRECATED)

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":"eth_getCompilers","params":[],"id":1}'

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

eth_compileSolidity (DEPRECATED)

Returns compiled solidity code.

Parameters

  1. 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":"eth_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": {}
        }
      }

}

eth_compileLLL (DEPRECATED)

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":"eth_compileLLL","params":["(returnlll (suicide (caller)))"],"id":1}'

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

eth_compileSerpent (DEPRECATED)

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":"eth_compileSerpent","params":["/* some serpent */"],"id":1}'

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

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.

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.

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.

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.

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.

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)

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

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.

getProof-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

params: ["0x1234567890123456789012345678901234567890",["0x0000000000000000000000000000000000000000000000000000000000000000","0x0000000000000000000000000000000000000000000000000000000000000001"],"latest"]

getProof-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.

getProof-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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",
      "0xf90171a04ad705ea7bf04339fa36b124fa221379bd5a38ffe9a6112cb2d94be3a437b879a08e45b5f72e8149c01efcb71429841d6a8879d4bbe27335604a5bff8dfdf85dcea00313d9b2f7c03733d6549ea3b810e5262ed844ea12f70993d87d3e0f04e3979ea0b59e3cdd6750fa8b15164612a5cb6567cdfb386d4e0137fccee5f35ab55d0efda0fe6db56e42f2057a071c980a778d9a0b61038f269dd74a0e90155b3f40f14364a08538587f2378a0849f9608942cf481da4120c360f8391bbcc225d811823c6432a026eac94e755534e16f9552e73025d6d9c30d1d7682a4cb5bd7741ddabfd48c50a041557da9a74ca68da793e743e81e2029b2835e1cc16e9e25bd0c1e89d4ccad6980a041dda0a40a21ade3a20fcd1a4abb2a42b74e9a32b02424ff8db4ea708a5e0fb9a09aaf8326a51f613607a8685f57458329b41e938bb761131a5747e066b81a0a16808080a022e6cef138e16d2272ef58434ddf49260dc1de1f8ad6dfca3da5d2a92aaaadc58080",
      "0xf851808080a009833150c367df138f1538689984b8a84fc55692d3d41fe4d1e5720ff5483a6980808080808080808080a0a319c1c415b271afc0adcb664e67738d103ac168e0bc0b7bd2da7966165cb9518080"
    ],
    "balance": "0x0",
    "codeHash": "0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470",
    "nonce": "0x0",
    "storageHash": "0x56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421",
    "storageProof": [
      {
        "key": "0x0000000000000000000000000000000000000000000000000000000000000000",
        "value": "0x0",
        "proof": []
      },
      {
        "key": "0x0000000000000000000000000000000000000000000000000000000000000001",
        "value": "0x0",
        "proof": []
      }
    ]
  }
}

db_putString

Stores a string in the local database.

Note this function is deprecated and will be removed in the future.

Parameters

  1. String - Database name.

  2. String - Key name.

  3. String - String to store.

params: [
  "testDB",
  "myKey",
  "myString"
]

Returns

Boolean - returns true if the value was stored, otherwise false.

Example

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

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

db_getString

Returns string from the local database.

Note this function is deprecated and will be removed in the future.

Parameters

  1. String - Database name.

  2. String - Key name.

params: [
  "testDB",
  "myKey",
]

Returns

String - The previously stored string.

Example

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

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

db_putHex

Stores binary data in the local database.

Note this function is deprecated and will be removed in the future.

Parameters

  1. String - Database name.

  2. String - Key name.

  3. DATA - The data to store.

params: [
  "testDB",
  "myKey",
  "0x68656c6c6f20776f726c64"
]

Returns

Boolean - returns true if the value was stored, otherwise false.

Example

// Request
curl -X POST --data '{"jsonrpc":"2.0","method":"db_putHex","params":["testDB","myKey","0x68656c6c6f20776f726c64"],"id":73}'

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

db_getHex

Returns binary data from the local database.

Note this function is deprecated and will be removed in the future.

Parameters

  1. String - Database name.

  2. String - Key name.

params: [
  "testDB",
  "myKey",
]

Returns

DATA - The previously stored data.

Example

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

// Result
{
  "id":1,
  "jsonrpc":"2.0",
  "result": "0x68656c6c6f20776f726c64"
}

chain_createChildChain

Send an application of Subchain Creation, save the application into the ChainInfo DB

Parameters

  1. from, address - the address who triggers the action (Dont create different Subchain with same address)

  2. chainId, string - subchain id

  3. minValidators, hex string - Minimum Validators of the new subchain

  4. minDepositAmount, hex string - Minimum Deposit PAI of the new subchain

  5. startBlock, hex string - Start Block height for launch subchain

  6. endBlock, hex string - End Block height for launch subchain

  7. gasPrice: hex string - (optional, default: 1 gwei) gas price from the request

params: [
   "0xa349d8a4e35f0c922377168daae653b5c9f1d370",
   "pchain-child-8",
   "0x1",
   "0x152D02C7E14AF6800000",
   "0x32",
   "0x7D0"
]

Returns

hash, string - the transaction hash

Example

// Request
curl -X POST -H "Content-Type:application/json" --data '{"jsonrpc":"2.0","method":"chain_createChildChain","params":["0xa349d8a4e35f0c922377168daae653b5c9f1d370","pchain-child-8", "0x1", "0x152D02C7E14AF6800000", "0x32","0x7D0"],"id":1}'

// Result
{
  "id":1,
  "jsonrpc": "2.0",
  "result": "0xadef13..."
}

chain_joinChildChain

Send a request to Join the subchain, save the Join Application into the ChainInfo DB, after the blockchain match the criteria of the subchain, chainMgr will load the subchain Data from ChainInfo DB then start it

Parameters

  1. from: address, 20 Bytes - the address who triggers the action

  2. pubkey: hex string, 128 Bytes - the BLS Public Key who triggers the action

  3. chainId: string - subchain id

  4. depositAmount: hex string - Amount of the Deposit PAI to join the subchain

  5. signature: hex string, 64 Bytes - the signature of From Address, signed by BLS Private Key. (How to sign, see chain_signAddress)

  6. gasPrice: hex string - (optional, default: 1 gwei) gas price from the request

params: [
   "0x5CE010Bf008Ba976Dd80Ed968a2f916190Cf9b4f",
  "5CCB45F727A7075C9336DF357A3610DD884FD97E64FFB51EED30890B8B3519E36D1C211A7BC1335C09CE654779328F1D01D997C1B2C5F9D196AD67FA5AF7A00273CED363C50D8F12B4EA096AFB859D6311C63C910752D41C0532C2D2654DCA863F7D56B2B9C33E0E7A5A0349F6B4FC20AE15526C5463F11D76FA92AB183ECEBE",
   "pchain-child-8",
   "0x152D02C7E14AF6800000",
   "0x6e5ea219800849592e67f76d45742a29c42a20b0b9d853facf32ac788591869e3db50a10770d88b93f24d2f6efed8acd220bce6442db7a2fbadfdada2d2cde73"
]

Returns

hash, hex string - the transaction hash

Example

// Request
curl -X POST -H "Content-Type:application/json" --data '{"jsonrpc":"2.0","method":"chain_joinChildChain","params":["0x5CE010Bf008Ba976Dd80Ed968a2f916190Cf9b4f","5CCB45F727A7075C9336DF357A3610DD884FD97E64FFB51EED30890B8B3519E36D1C211A7BC1335C09CE654779328F1D01D997C1B2C5F9D196AD67FA5AF7A00273CED363C50D8F12B4EA096AFB859D6311C63C910752D41C0532C2D2654DCA863F7D56B2B9C33E0E7A5A0349F6B4FC20AE15526C5463F11D76FA92AB183ECEBE", "pchain-child-8", "0x152D02C7E14AF6800000", "0x6e5ea219800849592e67f76d45742a29c42a20b0b9d853facf32ac788591869e3db50a10770d88b93f24d2f6efed8acd220bce6442db7a2fbadfdada2d2cde73"],"id":1}'

// Result
{
  "id":1,
  "jsonrpc": "2.0",
  "result": "0xadef13..."
}

chain_depositInMainChain

Deposit from the main chain to subchain (step 1). Should be used with chain_depositInChildChain.

Parameters

  1. from, address - the address who triggers the action

  2. chainId, string - subchain id

  3. amount, hex string - amount of PAI to deposit

  4. gasPrice: hex string - (optional, default: 1 gwei) gas price from the request

params: [
   "0xB3544059698177F14968D29A25AFD0D6D65F4534",
   "pchain_child_0",
   "0xA968163F0A57B4000000",
   "0x5208",
   "0xBA43B7400"
]

Returns

hash, string - the transaction hash

Example

// Request
curl -X POST -H "Content-Type:application/json" --data '{"jsonrpc":"2.0","method":"chain_depositInMainChain","params":["0xB3544059698177F14968D29A25AFD0D6D65F4534", "pchain_child_0", "0xA968163F0A57B4000000", "0x5208", "0xBA43B7400"],"id":1}'

// Result
{
  "id":1,
  "jsonrpc": "2.0",
  "result": "0x31d6fe..."
}

chain_depositInChildChain

Deposit from the main chain to subchain (step 2). Should be used with chain_depositInMainChain

Parameters

  1. from, address - the address who triggers the action

  2. txHash, string - Tx Hash of the chain_depositInMainChain rpc

params: [
   "0xB3544059698177F14968D29A25AFD0D6D65F4534",
   "0x31d6fe38869272a821ac7a2b3b00aba9cb486f02cc570895f8f5d2dea8f7b5dc",
]

Returns

hash, string - the transaction hash

Example

// Request
curl -X POST -H "Content-Type:application/json" --data '{"jsonrpc":"2.0","method":"chain_depositInChildChain","params":["0xB3544059698177F14968D29A25AFD0D6D65F4534", "0x31d6fe38869272a821ac7a2b3b00aba9cb486f02cc570895f8f5d2dea8f7b5dc"],"id":1}'

// Result
{
  "id":1,
  "jsonrpc": "2.0",
  "result": "0x60c54f..."
}

chain_withdrawFromChildChain

Withdraw from subchain to the main chain (step 1). Should be used with chain_withdrawFromMainChain

Parameters

  1. from, address - the address who triggers the action

  2. amount, hex string - amount of PAI to withdraw

  3. gasPrice: hex string - (optional, default: 1 gwei) gas price from the request

params: [
   "0xB3544059698177F14968D29A25AFD0D6D65F4534",
   "0x3F870857A3E0E3800000",
]

Returns

hash, string - the transaction hash

Example

// Request
curl -X POST -H "Content-Type:application/json" --data '{"jsonrpc":"2.0","method":"chain_withdrawFromChildChain","params":["0xB3544059698177F14968D29A25AFD0D6D65F4534", "0x3F870857A3E0E3800000"],"id":1}'

// Result
{
  "id":1,
  "jsonrpc": "2.0",
  "result": "0x6ff2ac..."
}

chain_withdrawFromMainChain

Withdraw from subchain to the main chain (step 2). Should be used with chain_withdrawFromChildChain

Parameters

  1. from, address - the address who triggers the action

  2. amount, hex string - amount of PAI to withdraw

  3. chainId, string - subchain id

  4. txHash, string - Tx Hash of the chain_withdrawFromChildChain rpc

params: [
   "0xB3544059698177F14968D29A25AFD0D6D65F4534",
   "0x3F870857A3E0E3800000",
   "pchain_child_0",
   "0x6ff2ac4bb53ef7907bef3219eb3f2684b66df8a22048a80270960f9671ed0007"
]

Returns

hash, string - the transaction hash

Example

// Request
curl -X POST -H "Content-Type:application/json" --data '{"jsonrpc":"2.0","method":"chain_withdrawFromMainChain","params":["0xB3544059698177F14968D29A25AFD0D6D65F4534", "0x3F870857A3E0E3800000", "pchain_child_0", "0x6ff2ac4bb53ef7907bef3219eb3f2684b66df8a22048a80270960f9671ed0007"],"id":1}'

// Result
{
  "id":1,
  "jsonrpc": "2.0",
  "result": "0xdacc81..."
}

chain_signAddress

Sign the Address with BLS Private Key, return the BLS Signature to proof you are the owner of the BLS Public Key

Parameters

  1. from: address, 20 Bytes - Address which will be signed

  2. privateKey: hex string, 32 Bytes - BLS Private Key

params: [
   "0xFD6AA07FF92907886B10B8E8863DDF8BA1902109",
   "0xA1BCB0033FC989D34026EED71AE6C57004CF1FBDC520ABF112B13FF7C03B62C6"
]

Returns

DATA, 64 Bytes - the BLS Signature for the Address

Example

// Request
curl -X POST -H "Content-Type:application/json" --data '{"jsonrpc":"2.0","method":"chain_signAddress","params":["0xFD6AA07FF92907886B10B8E8863DDF8BA1902109", "0xA1BCB0033FC989D34026EED71AE6C57004CF1FBDC520ABF112B13FF7C03B62C6"],"id":1}'

// Result
{
  "id":1,
  "jsonrpc": "2.0",
  "result": "0x64ad80a3741c7d0f2a9e879906b61464d98797c13c7d1e316928f67b44fbde3a69ededf8424eb178fe16222a1cb18c3ca5bebd8cad75dff8f88e31e282e3df6c"
}

chain_setBlockReward

Set the Reward of each block for the subchain, only subchain Owner is allowed to send this tx. The Block Reward change will effect on the next block after this tx be mined.

The Block Reward will be charged from subchain Address 0x0000000000000000000000000000000000000064 balance, which accept anyone to transfer their contribution

Parameters

  1. from: address, 20 Bytes - Owner Address of subchain

  2. reward: hex string - The reward of each block

params: [
   "0xFD6AA07FF92907886B10B8E8863DDF8BA1902109",
   "0x10"
]

Returns

hash, string - the transaction hash

Example

// Request
curl -X POST -H "Content-Type:application/json" --data '{"jsonrpc":"2.0","method":"chain_setBlockReward","params":["0xFD6AA07FF92907886B10B8E8863DDF8BA1902109", "0x10"],"id":1}'

// Result
{
  "id":1,
  "jsonrpc": "2.0",
  "result": "0xa4r5b7..."
}

chain_getBlockReward

Get the Reward of each block for the subchain

Parameters

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

params: [
   "0x670"
]

Returns

QUANTITY - integer of the block reward in wei

Example

// Request
curl -X POST -H "Content-Type:application/json" --data '{"jsonrpc":"2.0","method":"chain_getBlockReward","params":["0x670"],"id":1}'

// Result
{
  "id":1,
  "jsonrpc": "2.0",
  "result": "0x64" // 100
}

chain_getAllChains

Get all the Chain Info from the node (A synced Full node should have all the chains' info)

Parameters

none

Returns

Object - The chain info object

  • chain_id: String - The chain id of the chain.

  • owner: Address, 20 Bytes - The owner address of the chain.

  • current_epoch: Number - The current epoch number of the chain.

  • epoch_start_time: Time - The start time of the current epoch

  • validators: Array - Array of validator object

    • address: Address - Address of the Validator

    • voting_power: QUANTITY - Voting Power (Stack) of the Validator

Example

// Request
curl -X POST -H "Content-Type:application/json" --data '{"jsonrpc":"2.0","method":"chain_getAllChains","params":[],"id":1}'

// Result
{
    "jsonrpc": "2.0",
    "id": 1,
    "result": [
        {
            "chain_id": "pchain",
            "owner": "0x0000000000000000000000000000000000000000",
            "current_epoch": 103,
            "epoch_start_time": "2019-02-12T03:25:20.988Z",
            "validators": [
                {
                    "address": "0x4cacbcbf218679dcc9574a90a2061bca4a8d8b6c",
                    "voting_power": 1.99999999999999983222784e+23
                },
                {
                    "address": "0x79cd31b59e3faab6deea68fbbaafa4da748bbdf6",
                    "voting_power": 1.99999999999999983222784e+23
                },
                {
                    "address": "0xc6179a651918888251380a4e3fee6af81cf091d1",
                    "voting_power": 1.99999999999999983222784e+23
                }
            ]
        }
    ]
}

tdm_voteNextEpoch

Send hash of Vote for the next epoch (The valid window for this vote is between 75% - 85% of current epoch time, to know the detail block height, use tdm_getEpoch)

Parameters

  1. from: address, 20 Bytes - the address who triggers the action

  2. voteHash: hex string, 32 Bytes - hash of the vote. (How to get the vote hash, use Keccak-256 (not the standardized SHA3-256) example: keccak256(from + pubkey + amount + salt) ),you can get pubkey from 'priv_validator.json' in the datadir directory(Default ~/.pchain on linux).You can get vote hash By Javascript API web3getvotehash

  3. gasPrice: hex string - (optional, default: 1 gwei) gas price from the request

params: [
   "0xB3544059698177F14968D29A25AFD0D6D65F4534",
   "0xa394508546db4256283598119da9638fdb62655572722c6e2abea5f150512f2d"
]

Returns

hash, string - the transaction hash

Example

// Request
curl -X POST -H "Content-Type:application/json" --data '{"jsonrpc":"2.0","method":"tdm_voteNextEpoch","params":["0xB3544059698177F14968D29A25AFD0D6D65F4534", "0x1234564bb53ef7907bef3219eb3f2684b66df8a22048a80270960f9671ed0007"],"id":1}'

// Result
{
  "id":1,
  "jsonrpc": "2.0",
  "result": "0xa4r5b7..."
}

tdm_revealVote

Reveal the vote, the content of vote should matched with the hash which provided in tdm_voteNextEpoch (The valid window for this vote is between 85% - 95% of current epoch time, to know the detail block height, use tdm_getEpoch)

Parameters

  1. from: address, 20 Bytes - the address who triggers the action

  2. pubkey: hex string, 128 Bytes - the BLS Public Key who triggers the action

  3. amount: hex string - the amount of vote

  4. salt: string - salt string

  5. signature: hex string, 64 Bytes - the signature of From Address, signed by BLS Private Key. (How to sign, see chain_signAddress)

  6. gasPrice: hex string - (optional, default: 1 gwei) gas price from the request

Returns

hash, hex string - the transaction hash

Example

// Request
curl -X POST -H "Content-Type:application/json" --data '{"jsonrpc":"2.0","method":"tdm_revealVote","params":["0xB3544059698177F14968D29A25AFD0D6D65F4534", "04A77BB50F7D3993CC6485CAABF8FE1980EDAAE88635A1FCB6EFE577D4C10166F0BA4D9C1AC53461FE3332292DDC8594C92E0E4D2C0CEEE0F74D8D67ACD8E391B1", "0x152D02C7E14AF6800000", "tlas", "0x6e5ea219800849592e67f76d45742a29c42a20b0b9d853facf32ac788591869e3db50a10770d88b93f24d2f6efed8acd220bce6442db7a2fbadfdada2d2cde73"],"id":1}'

// Result
{
  "id":1,
  "jsonrpc": "2.0",
  "result": "0xbbr5b7..."
}

tdm_getCurrentEpochNumber

Returns the current epoch number

Parameters

none

Returns

epochNumber, hex string - current epoch number

Example

// Request
curl -X POST -H "Content-Type:application/json" --data '{"jsonrpc":"2.0","method":"tdm_getCurrentEpochNumber","params":[],"id":1}'

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

tdm_getEpoch

Returns the epoch details

Parameters

  1. number, hex string - epoch number

params: [
   "0x0",
]

Returns

result, string - detail of the specific epoch, such as validators, start block, end block, reward per block

Example

// Request
curl -X POST -H "Content-Type:application/json" --data '{"jsonrpc":"2.0","method":"tdm_getEpoch","params":["0x0"],"id":1}'

// Result
{
  "id":1,
  "jsonrpc": "2.0",
  "result": {
      "number": "0x0",
      "reward_per_block": "0x454f4a543d46b786",
      "start_block": "0x0",
      "end_block": "0xa0668",
      ...
   }
}

tdm_getNextEpochVote

Returns the votes details of the next epoch

Parameters

none

Returns

result, string - votes detail of the next epoch, such as epoch number, start block, end block, votes

Example

// Request
curl -X POST -H "Content-Type:application/json" --data '{"jsonrpc":"2.0","method":"tdm_getNextEpochVote","params":[],"id":1}'

// Result
{
  "id":1,
  "jsonrpc": "2.0",
  "result": {
    "vote_for_epoch": "0x1",
    "start_block": "0x601",
    "end_block": "0x1182",
    "votes": [
      {
        "address": "0xf4050fe211a5d819fb191a429474f30a00615cf9",
        "public_key": "00B64CC58F49BC1BCE9EE5794F85E6858B88B2AEB9E3B6CB4C4EDC5AFB3597D901187D70975C9A26C52908C9DC4D1334935D33FC18D89A3E858598A4D6C128E165AE684629B5D3595E00CC6D402340DCB60664A9BEFA24FE44CEDAF9A505550D7430CC66C0FE4B6931518DAEA6F639B2BC6A7537D8B68F78A45EF0E9C19ACE82",
        "amount": "0x200",
        "salt": "ABCD",
        "vote_hash": "0x9d861ed720a51396a7ba2b5c05db04924d96ed9e81781641bfbd343d4df3dd0e",
        "tx_hash": "0x919a3b45bbda8f0622515405b2a6ffab2653fef3567c405338f19ab229d65fcc"
      }
    ]
  }
}

tdm_getNextEpochValidators

Returns the validators of the next epoch based on the votes

Parameters

none

Returns

result, DATA - validators of the next epoch, such as address, public key, voting power

Example

// Request
curl -X POST -H "Content-Type:application/json" --data '{"jsonrpc":"2.0","method":"tdm_getNextEpochValidators","params":[],"id":1}'

// Result
{
    "jsonrpc": "2.0",
    "id": 1,
    "result": [
        {
            "address": "0xf4050fe211a5d819fb191a429474f30a00615cf9",
            "public_key": "00B64CC58F49BC1BCE9EE5794F85E6858B88B2AEB9E3B6CB4C4EDC5AFB3597D901187D70975C9A26C52908C9DC4D1334935D33FC18D89A3E858598A4D6C128E165AE684629B5D3595E00CC6D402340DCB60664A9BEFA24FE44CEDAF9A505550D7430CC66C0FE4B6931518DAEA6F639B2BC6A7537D8B68F78A45EF0E9C19ACE82",
            "voting_power": "0x200"
        }
    ]
}

tdm_generatePrivateValidator

Returns the generated BLS Public/Private Key associate with provided address

Parameters

  1. from: address, 20 Bytes - the address

Returns

  1. address: address, 20 Bytes - address from the request

  2. consensus_pub_key: hex string, 128 Bytes - the generated BLS Public Key

  3. consensus_priv_key: hex string, 32 Bytes - the generated BLS Private Key

Example

// Request
curl -X POST -H "Content-Type:application/json" --data '{"jsonrpc":"2.0","method":"tdm_generatePrivateValidator","params":["0x1234567890123456789012345678901234567890"],"id":1}'

// Result
{
    "jsonrpc": "2.0",
    "id": 1,
    "result": {
        "address": "0x1234567890123456789012345678901234567890",
        "consensus_pub_key": "6FDF14270D8346A5D60F2A8503D39529851909F18A35AAB0201E30A31B47A64A6D72F9D3E7D6E880408643EACBEBD16D77AB062EF6BCFBC6F2294A365AE119DD6942111D63D8FD5870D69DC651B8B6C8D7C11FDE51AE5F77846A102C25568619838548F301087A12EA0A0E4FEB6074695B0CA815777FF897F522E5307036A3DE",
        "consensus_priv_key": "B56578D7960C8AB00C1BE6D8D95D9A2424F604549F2F1D965EFACEBAE527A7A1"
    }
}

del_delegate

Create a new transaction to Delegate your balance to Candidate

Parameters

  1. from: address, 20 Bytes - the address who triggers the action

  2. candidate: address, 20 Bytes - the address of candidate

  3. amount: hex string - Amount of the Delegate PAI (minimum 1,000 PAI)

  4. gasPrice: hex string - (optional, default: 1 gwei) gas price from the request

params: [
   "0x1529FA43D9F7FE958662F7200739CDC3EC2666C7",
   "0xd833b6738285f4a50cf42cf1a40c4000256589d4",
   "0x3635c9adc5dea00000" // 1000 e+18
]

Returns

hash, hex string - the transaction hash

Example

// Request
curl -X POST -H "Content-Type:application/json" --data '{"jsonrpc":"2.0","method":"del_delegate","params":["0x1529FA43D9F7FE958662F7200739CDC3EC2666C7","0xd833b6738285f4a50cf42cf1a40c4000256589d4", "0x3635c9adc5dea00000"],"id":1}'

// Result
{
  "id":1,
  "jsonrpc": "2.0",
  "result": "0xadef13..."
}

del_cancelDelegate

Create a new transaction to Cancel your Delegation from Candidate

Parameters

  1. from: address, 20 Bytes - the address who triggers the action

  2. candidate: address, 20 Bytes - the address of candidate

  3. amount: hex string - Amount of the Delegate PAI

  4. gasPrice: hex string - (optional, default: 1 gwei) gas price from the request

params: [
   "0x1529FA43D9F7FE958662F7200739CDC3EC2666C7",
   "0xd833b6738285f4a50cf42cf1a40c4000256589d4",
   "0x10000"
]

Returns

hash, hex string - the transaction hash

Example

// Request
curl -X POST -H "Content-Type:application/json" --data '{"jsonrpc":"2.0","method":"del_cancelDelegate","params":["0x1529FA43D9F7FE958662F7200739CDC3EC2666C7","0xd833b6738285f4a50cf42cf1a40c4000256589d4", "0x10000"],"id":1}'

// Result
{
  "id":1,
  "jsonrpc": "2.0",
  "result": "0xadef13..."
}

del_applyCandidate

Create a new transaction to become a Candidate (with specific security deposit and commission fee rate)

Parameters

  1. from: address, 20 Bytes - the address who triggers the action

  2. securityDeposit: hex string - Amount of the security deposit PAI (minimum 10,000 PAI)

  3. commission: integer - the commission fee percentage of each Block Reward be charged from delegator, when Candidate become a Validator (between 0 - 100)

  4. gasPrice: hex string - (optional, default: 1 gwei) gas price from the request

params: [
   "0xd833b6738285f4a50cf42cf1a40c4000256589d4",
   "0x21e19e0c9bab2400000", // 10,000 e+18
   10
]

Returns

hash, hex string - the transaction hash

Example

// Request
curl -X POST -H "Content-Type:application/json" --data '{"jsonrpc":"2.0","method":"del_applyCandidate","params":["0xd833b6738285f4a50cf42cf1a40c4000256589d4", "0x10000", 10],"id":1}'

// Result
{
  "id":1,
  "jsonrpc": "2.0",
  "result": "0xadef13..."
}

del_cancelCandidate

Create a new transaction to cancel the Candidate qualification, if the address has deposited proxied balance, it will be refund at the end of epoch, otherwise will be refund immediately

Parameters

  1. from: address, 20 Bytes - the address who triggers the action

  2. gasPrice: hex string - (optional, default: 1 gwei) gas price from the request

params: [
   "0xd833b6738285f4a50cf42cf1a40c4000256589d4"
]

Returns

hash, hex string - the transaction hash

Example

// Request
curl -X POST -H "Content-Type:application/json" --data '{"jsonrpc":"2.0","method":"del_cancelCandidate","params":["0xd833b6738285f4a50cf42cf1a40c4000256589d4"],"id":1}'

// Result
{
  "id":1,
  "jsonrpc": "2.0",
  "result": "0xadef13..."
}

del_checkCandidate

Returns the candidate status of the account of given address.

Parameters

  1. from: address, 20 Bytes - address to check for balance.

  2. blockNumber: QUANTITY|TAG - integer block number, or the string "latest", "earliest" or "pending"

params: [
   '0xd833b6738285f4a50cf42cf1a40c4000256589d4',
   'latest'
]

Returns

  1. candidate: Boolean - Candidate Flag of the given address

  2. commission: QUANTITY - commission percentage of Candidate Address

Example

// Request
curl -X POST -H "Content-Type:application/json" --data '{"jsonrpc":"2.0","method":"del_checkCandidate","params":["0xd833b6738285f4a50cf42cf1a40c4000256589d4", "latest"],"id":1}'

// Result
{
    "jsonrpc": "2.0",
    "id": 1,
    "result": {
        "candidate": false,
        "commission": 0
    }
}

eth_getFullBalance

Returns the overall balance of the account of given address.

Parameters

  1. from: address, 20 Bytes - address to check for balance.

  2. blockNumber: QUANTITY|TAG - integer block number, or the string "latest", "earliest" or "pending"

  3. fullDetail: Boolean - If true it returns the full detail of proxied/reward object under this address

params: [
   '0xd833b6738285f4a50cf42cf1a40c4000256589d4',
   'latest',
   true
]

Returns

  1. balance: QUANTITY - integer of the current balance in p-wei.

  2. total_delegateBalance: QUANTITY - total delegate balance in p-wei to other address

  3. total_depositBalance: QUANTITY - deposit balance in p-wei for Validator Stake

  4. total_depositProxiedBalance: QUANTITY - total deposit proxied balance in p-wei for Validator Stake

  5. total_pendingRefundBalance: QUANTITY - total pending refund balance in p-wei which will be return to delegate at the end of Current Epoch

  6. total_proxiedBalance: QUANTITY - total proxied balance in p-wei delegate from other address

  7. total_rewardBalance: QUANTITY - total pending reward balance in p-wei of this address

  8. proxied_detail: Object - detail record of each address's proxied data, including proxied balance, deposit proxied balance and pending refund balance

  9. reward_detail: Object - detail record of this address's reward data, including how much balance in p-wei will be given at the end of each epoch

Example

// Request
curl -X POST -H "Content-Type:application/json" --data '{"jsonrpc":"2.0","method":"eth_getFullBalance","params":["0xd833b6738285f4a50cf42cf1a40c4000256589d4", 100, true],"id":1}'

// Result
{
    "jsonrpc": "2.0",
    "id": 1,
    "result": {
        "balance": "0x1000eadf9",
        "proxied_detail": {
            "0x1529fa43d9f7fe958662f7200739cdc3ec2666c7": {
                "ProxiedBalance": "0xb000",
                "DepositProxiedBalance": "0x0",
                "PendingRefundBalance": "0x0"
            },
            "0xd833b6738285f4a50cf42cf1a40c4000256589d4": {
                "ProxiedBalance": "0x152d02c7e14af6800000",
                "DepositProxiedBalance": "0x0",
                "PendingRefundBalance": "0x0"
            }
        },
        "reward_detail": {
            "epoch_0": "0x4c65c629400",
            "epoch_1": "0x4c65c629400",
            "epoch_10": "0x4c65c629400",
            "epoch_11": "0x4c65c629437",
            "epoch_2": "0x4c65c629400",
            "epoch_3": "0x4c65c629400",
            "epoch_4": "0x4c65c629400",
            "epoch_5": "0x4c65c629400",
            "epoch_6": "0x4c65c629400",
            "epoch_7": "0x4c65c629400",
            "epoch_8": "0x4c65c629400",
            "epoch_9": "0x4c65c629400"
        },
        "total_delegateBalance": "0x152d02c7e14af6800000",
        "total_depositBalance": "0x0",
        "total_depositProxiedBalance": "0x0",
        "total_pendingRefundBalance": "0x0",
        "total_proxiedBalance": "0x152d02c7e14af680b000",
        "total_rewardBalance": "0x394c549ef037"
    }
}

del_extractReward

Extract all avaliable reward.

Parameters

  1. address: address, 20 Bytes - address to check for balance.

  2. gasPrice: QUANTITY|TAG -(optional, default: To-Be-Determined) Integer of the gasPrice used for each paid gas

params: [
   '0xd833b6738285f4a50cf42cf1a40c4000256589d4',
   '0x3635c9adc5dea00000'
]

Returns

hash hex string - the transaction hash

Example

// Request
curl -X POST -H "Content-Type:application/json" --data '{"jsonrpc":"2.0","method":"del_extractReward","params":["0xd833b6738285f4a50cf42cf1a40c4000256589d4", '0x3635c9adc5dea00000'],"id":1}'

// Result
{
    "jsonrpc": "2.0",
    "id": 1,
    "result": "0xadef13..."
}

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