kryptokrona-service

The kryptokrona RPC Wallet is a HTTP server which provides JSON 2.0 RPC interface for kryptokrona payment operations and address management.

Currently we support the following official client bindings:

• PHP

• Python

• Go

Note: Eventually, kryptokrona-service will be deprecated. It is suggested to use wallet-api for new applications.

Installation

composer require kryptokrona/kryptokrona-rpc-php

pip3 install kryptokrona

go get github.com/kryptokrona/kryptokrona-rpc-go

Interacting with the API

API endpoint example

http://localhost:8070/json_rpc

Configuration and instantiation

To make a JSON RPC request to your kryptokrona RPC Wallet you should use a GET request that looks like this:

http://<service address>:<service port>/json_rpc

Parameter	Description
<service address>	IP of kryptokrona RPC Wallet, if RPC Wallet is located on local machine it is either 127.0.0.1 or localhost
<service port>	kryptokrona RPC Wallet port, by default it is bound to 8070 port, but it can be manually bound to any port you want

<?php
use kryptokrona\kryptokronaService;

$config = [
    'rpcHost'     => 'http://localhost',
    'rpcPort'     => 8070,
    'rpcPassword' => 'passw0rd',
];

$kryptokronaService = new kryptokronaService($config);

from kryptokrona import Walletd

rpc_host = 'localhost'
rpc_port = 8070
rpc_password = 'passw0rd'

walletd = Walletd(rpc_password, rpc_host, rpc_port)

import (
  "fmt"
  trpc "github.com/kryptokrona/kryptokrona-rpc-go"
)

rpcHost := "localhost"
rpcPort := 8070
rpcPassword := "passw0rd"

service := trpc.Walletd{
  URL: rpcHost,
  Port: rpcPort,
  RPCPassword: rpcPassword}

reset

reset() method allows you to re-sync your wallet.

Input

Argument	Mandatory	Description	Format
scanHeight	No	The height to begin scanning for transactions at. This can greatly speed up wallet syncing time.	int

curl -d '{"jsonrpc":"2.0","id":1,"password":"passw0rd","method":"reset","params":{"scanHeight":100000}}' http://localhost:8070/json_rpc

<?php
$scanHeight = 100000;
$response = $kryptokronaService->reset($scanHeight);
echo $response;

scan_height = 100000
response = walletd.reset(scan_height)
print(response)

scanHeight := 0 // starting height to scan
response, err := service.Reset(scanHeight)
if err != nil {
  fmt.Println(err)
} else {
  fmt.Println(response)
}

Expected Output:

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

No output in case of success.

Note: If the viewSecretKey argument is not provided, the reset() method resets the wallet and re-syncs it. If the viewSecretKey argument is provided, the reset() method substitutes the existing wallet with a new one with the specified key.

save

save() method allows you to save your wallet by request.

No input. No output in case of success.

curl -d '{"jsonrpc":"2.0","id":1,"password":"passw0rd","method":"save","params":{}}' http://localhost:8070/json_rpc

<?php
$response = $kryptokronaService->save();
echo $response;

response = walletd.save()
print(response)

response, err := service.Save()
if err != nil {
  fmt.Println(err)
} else {
  fmt.Println(response)
}

Expected Output:

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

getViewKey

getViewKey() method returns your view key.

No input.

Output

Argument	Description	Format
viewSecretKey	Private view key	string

curl -d '{"jsonrpc":"2.0","id":1,"password":"passw0rd","method":"getViewKey","params":{}}' http://localhost:8070/json_rpc

<?php
$response = $kryptokronaService->getViewKey();
echo $response;

response = walletd.get_view_key()
print(response)

response, err := service.GetViewKey()
if err != nil {
  fmt.Println(err)
} else {
  fmt.Println(response)
}

Expected Output:

{
  "id":1,
  "jsonrpc":"2.0",
  "result":{
    "viewSecretKey":"xxxxx..."
  }
}

getSpendKeys

getSpendKeys() method returns your spend keys.

Input

Argument	Mandatory	Description	Format
address	Yes	Valid address that exists in this container	string

Output

Argument	Description	Format
spendSecretKey	Private spend key	string
spendPublicKey	Public spend key	string

curl -d '{"jsonrpc":"2.0","id":1,"password":"passw0rd","method":"getSpendKeys","params":{"address":"SEKRxxxx..."}}' http://localhost:8070/json_rpc

<?php
$address = 'SEKRxxxx...';
$response = $kryptokronaService->getSpendKeys($address);
echo $response;

address = 'SEKRxxxx...'
response = walletd.get_spend_keys(address)
print(response)

address := "SEKRxxxx..."
response, err := service.GetSpendKeys(address)
if err != nil {
  fmt.Println(err)
} else {
  fmt.Println(response)
}

Expected Output:

{
  "id":1,
  "jsonrpc":"2.0",
  "result":{
    "spendSecretKey":"xxxxx...",
    "spendPublicKey":"xxxxx..."
  }
}

getMnemonicSeed

getMnemonicSeed() method returns the mnemonic seed for the given deterministic address. A mnemonic seed is a list of words which can be used to recover a wallet.

Input

Argument	Mandatory	Description	Format
address	Yes	Valid deterministic address that exists in this container	string

Output

Argument	Description	Format
mnemonicSeed	Mnemonic seed	string

Note: The first wallet address that is generated when the container is created is the deterministic address. Only one wallet from a multi-wallet container can be deterministic. If a non-deterministic address is given, the RPC response will be an error with the message: "Keys not deterministic."

curl -d '{"jsonrpc":"2.0","id":1,"password":"passw0rd","method":"getMnemonicSeed","params":{"address":"SEKRxxxx..."}}' http://localhost:8070/json_rpc

<?php
$address = 'SEKRxxxx...';
$response = $kryptokronaService->getMnemonicSeed($address);
echo $response;

address = 'SEKRxxxx...'
response = walletd.get_mnemonic_seed(address)
print(response)

address := "SEKRxxxx..."
response, err := service.GetMnemonicSeed(address)
if err != nil {
  fmt.Println(err)
} else {
  fmt.Println(response)
}

Expected Output:

{
  "id":1,
  "jsonrpc":"2.0",
  "result":{
    "mnemonicSeed":"turtles are cool..."
  }
}

getStatus

getStatus() method returns information about the current RPC Wallet state: block count, known block count, last block hash and peer count.

No input.

Output

Argument	Description	Format
blockCount	Node's known number of blocks	int
knownBlockCount	Maximum known number of blocks of all seeds that are connected to the node	int
lastBlockHash	Hash of the last known block	string
peerCount	Connected peers number	int

curl -d '{"jsonrpc":"2.0","id":1,"password":"passw0rd","method":"getStatus","params":{}}' http://localhost:8070/json_rpc

<?php
$response = $kryptokronaService->getStatus();
echo $response;

response = walletd.get_status()
print(response)

response, err := service.GetStatus()
if err != nil {
  fmt.Println(err)
} else {
  fmt.Println(response)
}

Expected Output:

{
  "id":1,
  "jsonrpc":"2.0",
  "result":{
    "blockCount":455956,
    "knownBlockCount":455955,
    "lastBlockHash":"8d6f8...",
    "peerCount":8
  }
}

getAddresses

getAddresses() method returns an array of your RPC Wallet's addresses.

No input.

Output

Argument	Description	Format
addresses	Array of strings, where each string is an address	array

curl -d '{"jsonrpc":"2.0","id":1,"password":"passw0rd","method":"getAddresses","params":{}}' http://localhost:8070/json_rpc

<?php
$response = $kryptokronaService->getAddresses();
echo $response;

response = walletd.get_addresses()
print(response)

response, err := service.GetAddresses()
if err != nil {
  fmt.Println(err)
} else {
  fmt.Println(response)
}

Expected Output:

{
  "id":1,
  "jsonrpc":"2.0",
  "result":{
    "addresses":[
      "SEKRxxxx...",
      "SEKRxxxx..."
    ]
  }
}

createAddress

createAddress() method creates an additional address in your wallet.

Input

Argument	Mandatory	Description	Format
spendSecretKey	No	Private spend key. If spendSecretKey was specified, RPC Wallet creates spend address	string
spendPublicKey	No	Public spend key. If spendPublicKey was specified, RPC Wallet creates view address	string
newAddress	No	Is this a new address being created? If so, blocks before the creation timestamp will not be scanned. Defaults to true if neither keys are given, as it is guaranteed to be a new address.	bool
scanHeight	No	The height to begin scanning for transactions at. Only applies if a public/secret key is supplied. This can greatly speed up wallet syncing time.	int

curl -d '{"jsonrpc":"2.0","id":1,"password":"passw0rd","method":"createAddress","params":{}}' http://localhost:8070/json_rpc

<?php
$spendSecretKey = null;
$spendPublicKey = null;
$response = $kryptokronaService->createAddress($spendSecretKey, $spendPublicKey);
echo $response;

spend_secret_key = ''
spend_public_key = ''
response = walletd.create_address(spend_secret_key, spend_public_key)
print(response)

spendSecretKey := ""
spendPublicKey := ""
scanHeight := 850000
newAddress := true
response, err := service.CreateAddress(spendSecretKey, spendPublicKey, scanHeight, newAddress)
if err != nil {
  fmt.Println(err)
} else {
  fmt.Println(response)
}

Expected Output:

{
  "id":1,
  "jsonrpc":"2.0",
  "result":{
    "address":"SEKRxxxx..."
  }
}

deleteAddress

deleteAddress() method deletes a specified address.

Input

Argument	Mandatory	Description	Format
address	Yes	An address to be deleted	string

Output

In case of success returns an empty JSON object.

curl -d '{"jsonrpc":"2.0","id":1,"password":"passw0rd","method":"deleteAddress","params":{"address":"SEKRxxxx..."}}' http://localhost:8070/json_rpc

<?php
$address = 'SEKRxxxx...';
$response = $kryptokronaService->deleteAddress($address);
echo $response;

address = 'SEKRxxxx...'
response = walletd.delete_address(address)

# If the delete was successful, response will be True
print(response)

address := "SEKRxxxx..."
response, err := service.DeleteAddress(address)
if err != nil {
  fmt.Println(err)
} else {
  fmt.Println(response)
}

Expected Output:

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

getBalance

getBalance() method returns a balance for a specified address.

Input

Argument	Mandatory	Description	Format
address	No	Valid address that exists in this container	string

Output

Argument	Description	Format
availableBalance	Available balance of the specified address in shells	int
lockedAmount	Locked amount of the specified address in shells	int

Note: If an address is not specified, getBalance() returns a cumulative balance of all RPC Wallet's addresses.

Note: Balances are expressed in shells, so a balance of 10000 is equal to 100.00 SEKR

curl -d '{"jsonrpc":"2.0","id":1,"password":"passw0rd","method":"getBalance","params":{"address":"SEKRxxxx..."}}' http://localhost:8070/json_rpc

<?php
$address = 'SEKRxxxx...';
$response = $kryptokronaService->getBalance($address);
echo $response;

address = 'SEKRxxxx...'
response = walletd.get_balance(address)
print(response)

address := "SEKRxxxx..."
response, err := service.GetBalance(address)
if err != nil {
  fmt.Println(err)
} else {
  fmt.Println(response)
}

Expected Output:

{
  "id":1,
  "jsonrpc":"2.0",
  "result":{
    "availableBalance":10000,
    "lockedAmount":0
  }
}

getBlockHashes

getBlockHashes() method returns an array of block hashes for a specified block range.

Input

Argument	Mandatory	Description	Format
firstBlockIndex	Yes	Starting height	int
blockCount	Yes	Number of blocks to process	int

Output

Argument	Description	Format
blockHashes	Array of strings, where each element is a block hash	array

curl -d '{"jsonrpc":"2.0","id":1,"password":"passw0rd","method":"getBlockHashes","params":{"firstBlockIndex":0,"blockCount":3}}' http://localhost:8070/json_rpc

<?php
$firstBlockIndex = 0;
$blockCount = 3;
$response = $kryptokronaService->getBlockHashes($firstBlockIndex, $blockCount);
echo $response;

first_block_index = 0
block_count = 3
response = walletd.get_block_hashes(first_block_index, block_count)
print(response)

firstBlockIndex := 0
blockCount := 3
response, err := service.GetBlockHashes(firstBlockIndex, blockCount)
if err != nil {
  fmt.Println(err)
} else {
  fmt.Println(response)
}

Expected Output:

{
  "id":1,
  "jsonrpc":"2.0",
  "result":{
    "blockHashes":[
      "7fb97...",
      "8c973...",
      "2ef06..."
    ]
  }
}

getTransactionHashes

getTransactionHashes() method returns an array of block and transaction hashes. A transaction consists of transfers. A transfer is an amount-address pair. There could be several transfers in a single transaction.

Input

Argument	Mandatory	Description	Format
addresses	No	Array of strings, where each string is an address	array
blockHash	Only one of these parameters (blockHash or firstBlockIndex) is allowed	Hash of the starting block	string
firstBlockIndex	Only one of these parameters (blockHash or firstBlockIndex) is allowed	Starting height	int
blockCount	Yes	Number of blocks to return transaction hashes from	int
paymentId	No	Valid payment ID (64char hex string)	string

• If paymentId parameter is set, getTransactionHashes() method returns transaction hashes of transactions that contain specified payment ID in the given block range.

• If addresses parameter is set, getTransactionHashes() method returns transaction hashes of transactions that contain transfer from at least one of specified addresses.

• If both above mentioned parameters are set, getTransactionHashes() method returns transaction hashes of transactions that contain both specified payment ID and transfer from at least one of specified addresses.

Output

Argument	Description
items	Array of

	   | **Attribute**            	                         | **Description**                                              | **Format** |                                        
       | blockHash                                           | Hash of the block which contains transaction hashes          | string     |
       | transactionHashes                                   | Array of strings, where each string is a transaction hash    | array      |

curl -d '{"jsonrpc":"2.0","id":1,"password":"passw0rd","method":"getTransactionHashes","params":{"firstBlockIndex":400000,"blockCount":100000}}' http://localhost:8070/json_rpc

<?php
$blockCount = 100000;
$firstBlockIndex = 400000;
$blockHash = null;
$addresses = null;
$paymentId = null;

$response = $kryptokronaService->getTransactionHashes(
    $blockCount, $firstBlockIndex, $blockHash, $addresses, $paymentId
);

echo $response;

block_count = 100000
block_hash = '6c285...'
addresses = []
payment_id = ''

response = walletd.get_transaction_hashes(addresses, block_hash, block_count, payment_id)
print(response)

addresses := []string{"SEKRxxxx..."}
blockHash := ""
firstBlockIndex := 0
blockCount := 3
paymentID := ""
response, err := service.GetTransactionHashes(addresses, blockHash, firstBlockIndex, blockCount, paymentID)
if err != nil {
  fmt.Println(err)
} else {
  fmt.Println(response)
}

Expected Output:

{
  "id":1,
  "jsonrpc":"2.0",
  "result":{
    "items":[
      {
        "blockHash":"f0d8c...",
        "transactionHashes":["529ea..."]
      },
      {
        "blockHash":"4a1ae...",
        "transactionHashes":["2e709..."]
      }
    ]
  }
}

getTransactions

getTransactions() method returns an array of block and transaction hashes. A transaction consists of transfers. A transfer is an amount-address pair. There could be several transfers in a single transaction.

Input

Argument	Mandatory	Description	Format
addresses	No	Array of strings, where each string is an address	array
blockHash	Only one of these parameters (blockHash or firstBlockIndex) is allowed.	Hash of the starting block	string
firstBlockIndex	Only one of these parameters (blockHash or firstBlockIndex) is allowed.	Starting height >0 (1,2,3...)	int
blockCount	Yes	Number of blocks to return transaction hashes from	int
paymentId	No	Valid payment ID (64char hex string)	string

• If paymentId parameter is set, getTransactions() method returns transactions that contain specified payment ID in the given block range.

• If addresses parameter is set, getTransactions() method returns transactions that contain transfer from at least one of specified addresses.

• If both above mentioned parameters are set, getTransactions() method returns transactions that contain both specified payment ID and transfer from at least one of specified addresses.

Output

Argument		Description	Format
items	Array of

	   | block_hash                   | hash of the block which contains a transaction    | string
	   | transactions                 | see below                                         | array

Transaction attributes:

Argument	Description	Format
transactionHash	Hash of the transaction	string
blockIndex	Number of the block that contains a transaction	int
timestamp	Timestamp of the transaction	int
isBase	Shows if the transaction is a CoinBase transaction or not	boolean
unlockTime	Height of the block when transaction is going to be available for spending	int
amount	Amount of the transaction	int
fee	Transaction fee	int
extra	Hash of the transaction	string
paymentId	Payment ID of the transaction (optional) (64char hex string)	string
transfers	Array of address (string), amount (int)	array

curl -d '{"jsonrpc":"2.0","id":1,"password":"passw0rd","method":"getTransactions","params":{"firstBlockIndex":400000,"blockCount":100000}}' http://localhost:8070/json_rpc

<?php
$blockCount = 100000;
$firstBlockIndex = 400000;
$blockHash = null;
$addresses = null;
$paymentId = null;

$response = $kryptokronaService->getTransactions(
    $blockCount, $firstBlockIndex, $blockHash, $addresses, $paymentId
);

echo $response;

block_count = 100000
block_hash = '6c285...'
addresses = []
payment_id = ''

response = walletd.get_transactions(addresses, block_hash, block_count, payment_id)
print(response)

addresses := []string{"SEKRxxxx..."}
blockHash := ""
firstBlockIndex := 0
blockCount := 3
paymentID := ""
response, err := service.GetTransactions(addresses, blockHash, firstBlockIndex, blockCount, paymentID)
if err != nil {
  fmt.Println(err)
} else {
  fmt.Println(response)
}

Expected Output:

{
  "id":1,
  "jsonrpc":"2.0",
  "result":{
    "items":[
      {
        "blockHash":"f0d8c...",
        "transactions":[
          {
            "amount":10000,
            "blockIndex":456018,
            "extra":"01bd0...",
            "fee":10,
            "isBase":false,
            "paymentId":"b6fc6...",
            "state":0,
            "timestamp":1526458339,
            "transactionHash":"529ea...",
            "transfers":[
              {"address":"SEKRxxxx...","amount":10000,"type":0},
              {"address":"","amount":-100000,"type":0},
              {"address":"","amount":89990,"type":0}
            ],
            "unlockTime":0
          }
        ]
      },
      {
        "blockHash":"4a1ae...",
        "transactions":[
          {
            "amount":5000,
            "blockIndex":456076,
            "extra":"018c1...",
            "fee":10,
            "isBase":false,
            "paymentId":"55255...",
            "state":0,
            "timestamp":1526460243,
            "transactionHash":"2e709...",
            "transfers":[
              {"address":"SEKRxxxx...","amount":5000,"type":0},
              {"address":"","amount":-8000,"type":0},
              {"address":"","amount":2990,"type":0}
            ],
            "unlockTime":0
          }
        ]
      }
    ]
  }
}

getUnconfirmedTransactionHashes

getUnconfirmedTransactionHashes() method returns information about the current unconfirmed transaction pool or for a specified addresses.

Transaction consists of transfers. Transfer is an amount-address pair. There could be several transfers in a single transaction.

Input

Argument	Mandatory	Description	Format
addresses	No	Array of strings, where each string is a valid address	array

Note: If addresses parameter is set, transactions that contain transfer from at least one of specified addresses are returned.

Output

Argument	Description	Format
transactionHashes	Array of strings, where each string is a hash of an unconfirmed transaction	array

curl -d '{"jsonrpc":"2.0","id":1,"password":"passw0rd","method":"getUnconfirmedTransactionHashes","params":{}}' http://localhost:8070/json_rpc

<?php
$addresses = null;
$response = $kryptokronaService->getUnconfirmedTransactionHashes($addresses);
echo $response;

addresses = []
response = walletd.get_unconfirmed_transaction_hashes(addresses)
print(response)

addresses := []string{"SEKRxxxx..."}
response, err := service.GetUnconfirmedTransactionHashes(addresses)
if err != nil {
		fmt.Println(err)
} else {
  fmt.Println(response)
}

Expected Output:

{
  "id":1,
  "jsonrpc":"2.0",
  "result":{
    "transactionHashes":[
      "55a23..."
    ]
  }
}

getTransaction

getTransaction() method returns information about a particular transaction.

Transaction consists of transfers. Transfer is an amount-address pair. There could be several transfers in a single transaction.

Input

Argument	Mandatory	Description	Format
transactionHash	Yes	Hash of the requested transaction	string

Output

Argument	Description
transaction	see below

Transaction attributes:

Argument	Description	Format
transactionHash	Hash of the transaction	string
blockIndex	Number of the block that contains a transaction	int
timestamp	Timestamp of the transaction	int
isBase	Shows if the transaction is a CoinBase transaction or not	boolean
unlockTime	Height of the block when transaction is going to be available for spending	int
amount	Amount of the transaction	int
fee	Transaction fee	int
extra	Hash of the transaction	string
paymentId	Payment ID of the transaction (optional) (64char hex string)	string
transfers	Array of addresses (string), amount (int)	array

curl -d '{"jsonrpc":"2.0","id":1,"password":"passw0rd","method":"getTransaction","params":{"transactionHash":"55a23..."}}' http://localhost:8070/json_rpc

<?php
$transactionHash = '55a23...';
$response = $kryptokronaService->getTransaction($transactionHash);
echo $response;

transaction_hash = '55a23...'
response = walletd.get_transaction(transaction_hash)
print(response)

transactionHash := "55a23..."
response, err := service.GetTransaction(transactionHash)
if err != nil {
	fmt.Println(err)
} else {
  fmt.Println(response)
}

Expected Output:

{
  "id":1,
  "jsonrpc":"2.0",
  "result":{
    "transaction":{
      "amount":5000,
      "blockIndex":456635,
      "extra":"0134b...",
      "fee":10,
      "isBase":false,
      "paymentId":"ac9c5...",
      "state":0,
      "timestamp":1526477499,
      "transactionHash":"55a23...",
      "transfers":[
        {"address":"SEKRxxxx...","amount":5000,"type":0},
        {"address":"","amount":-10000,"type":0},
        {"address":"","amount":4990,"type":0}
      ],
      "unlockTime":0
    }
  }
}

sendTransaction

sendTransaction() method allows you to send transaction(s) to one or several addresses. Also, it allows you to use a payment ID for a transaction to a single address.

Input

Argument	Mandatory	Description	Format
addresses	No	Array of strings, where each string is an address to take the funds from	array
transfers	Yes	Array of objects, address: (string address), amount: (int amount)	array
fee	No	Transaction fee. Should be given in atomic units. Leave blank to use the minimum fee possible.	int
feePerByte	No	Fee to pay per byte of the transaction. Should be given in atomic units. If given, should be greater than 1.953125, the minimum network fee per byte.	float
unlockTime	No	The block height at which the transaction will be unlocked for spending.	int
anonymity	Yes	Privacy (mixin) level from block 800,000 three (3)	int
extra	No	String of variable length. Can contain A-Z, 0-9 characters.	string
paymentId	No	Payment ID (64char hex string)	string
changeAddress	No	Valid and existing address in this container.	string

• If container contains only 1 address, changeAddress field can be left empty and the change is going to be sent to this address.

• If addresses field contains only 1 address, changeAddress can be left empty and the change is going to be sent to this address.

• In the rest of the cases, changeAddress field is mandatory and must contain an address.

Output

Argument	Description	Format
transactionHash	Hash of the sent transaction	string
fee	The fee of the send transaction	int

curl -X POST -i -H "Accept: application/json" -d '{"jsonrpc":"2.0","id":"0","password":"passw0rd","method":"sendTransaction","params":{"transfers":[{"amount":5000,"address":"SEKReTFHsz8G4...Y5owuFxLd"}],"fee":100,"anonymity":3,"unlockTime":0}}' http://localhost:8070/json_rpc

<?php
$anonymity = 3;
$fee = 243000;
$addresses = null;
$unlockTime = null;
$extra = null;
$paymentId = null;
$changeAddress = 'SEKRyyyy...';

$transfers = [
    ["address" => "SEKRxxxx...", "amount"  => 5000],
];

$response = $kryptokronaService->sendTransaction(
    $anonymity, $transfers, $fee, $addresses, $unlockTime, $extra, $paymentId, $changeAddress
);

echo $response;

anonymity = 3
fee = 243000
addresses = []
unlock_time = 0
extra = ''
payment_id = ''
change_address = 'SEKRyyyy...'

transfers = [
    {"address" : "SEKRxxxx...", "amount" : 5000},
]

response = walletd.send_transaction(
    transfers, anonymity, fee, addresses, change_address, extra, payment_id, unlock_time
)
print(response)

addresses := []string{"SEKRyyyy..."} // can be empty
unlockTime := 0
extra := ""
paymentID := ""
fee := 243000
changeAddress := "SEKRyyyy..."

transfers := []map[string]interface{}{
  {
    "address" : "SEKRxxxx...",
    "amount" : 5000,
  },
}

response, err := service.SendTransaction(addresses, transfers, fee, unlockTime, extra, paymentID, changeAddress)
if err != nil {
	fmt.Println(err)
} else {
  fmt.Println(response)
}

Expected Output:

{
  "id":1,
  "jsonrpc":"2.0",
  "result":{
    "transactionHash":"ae57e...",
    "fee": 4500
  }
}

createDelayedTransaction

createDelayedTransaction() method creates a delayed transaction. Such transactions are not sent into the network automatically and should be pushed using sendDelayedTransaction method.

Input

Argument	Mandatory	Description	Format
addresses	No	Array of strings, where each string is an address	array
transfers	Yes	Array of address (string), amount (int)	array
fee	No	Transaction fee. Should be given in atomic units. Leave blank to use the minimum fee possible.	int
feePerByte	No	Fee to pay per byte of the transaction. Should be given in atomic units. If given, should be greater than 1.953125, the minimum network fee per byte.	float
unlockTime	No	Height of the block until which transaction is going to be locked for spending.	int
anonymity	Yes	Privacy (mixin) level from block 800,000 three (3)	int
extra	No	String of variable length. Can contain A-Z, 0-9 characters.	string
paymentId	No	Payment ID (64char hex string)	string
changeAddress	No	Valid and existing in this container address.	string

• If container contains only 1 address, changeAddress field can be left empty and the change is going to be sent to this address

• If addresses field contains only 1 address, changeAddress can be left empty and the change is going to be sent to this address

• In the rest of the cases, changeAddress field is mandatory and must contain an address.

• Outputs that were used for this transactions will be locked until the transaction is sent or cancelled

Output

Argument	Description	Format
transactionHash	Hash of the sent transaction	string
fee	The fee of the send transaction	int

curl -d '{"jsonrpc":"2.0","id":1,"password":"passw0rd","method":"createDelayedTransaction","params":{"transfers":[{"address":"SEKRxxxx...","amount":5000}],"anonymity":3,"changeAddress":"SEKRyyyy..."}}' http://localhost:8070/json_rpc

<?php
$anonymity = 3;
$fee = 243000;
$addresses = null;
$unlockTime = null;
$extra = null;
$paymentId = null;
$changeAddress = 'SEKRyyyy...';

$transfers = [
    ["address" => "SEKRxxxx...", "amount"  => 5000],
];

$response = $kryptokronaService->createDelayedTransaction(
    $anonymity, $transfers, $fee, $addresses, $unlockTime, $extra, $paymentId, $changeAddress
);

echo $response;

anonymity = 3
fee = 243000
addresses = []
unlock_time = 0
extra = ''
payment_id = ''
change_address = 'SEKRyyyy...'

transfers = [
    {"address" : "SEKRxxxx...", "amount" : 5000},
]

response = walletd.create_delayed_transaction(
    transfers, anonymity, fee, addresses, change_address, extra, payment_id, unlock_time
)
print(response)

addresses := []string{"SEKRyyyy..."} // can be empty
unlockTime := 0
extra := ""
paymentID := ""
fee := 243000
changeAddress := "SEKRyyyy..."

transfers := []map[string]interface{}{
  {
    "address" : "SEKRxxxx...",
    "amount" : 5000,
  },
}

response, err := service.CreateDelayedTransaction(addresses, transfers, fee, unlockTime, extra, paymentID, changeAddress)
if err != nil {
	fmt.Println(err)
} else {
  fmt.Println(response)
}

Expected Output:

{
  "id":1,
  "jsonrpc":"2.0",
  "result":{
    "transactionHash":"ae57e...",
    "fee": 4500
  }
}

getDelayedTransactionHashes

getDelayedTransactionHashes() method returns hashes of delayed transactions.

No input.

Output

Argument	Description	Format
transactionHashes	Array of strings, where each string is a transaction hash	array

curl -d '{"jsonrpc":"2.0","id":1,"password":"passw0rd","method":"getDelayedTransactionHashes","params":{}}' http://localhost:8070/json_rpc

<?php
$response = $kryptokronaService->getDelayedTransactionHashes();
echo $response;

response = walletd.get_delayed_transaction_hashes()
print(response)

response, err := service.GetDelayedTransactionHashes()
if err != nil {
	fmt.Println(err)
} else {
  fmt.Println(response)
}

Expected Output:

{
  "id":1,
  "jsonrpc":"2.0",
  "result":{
    "transactionHashes":["b3e374..."]
  }
}

deleteDelayedTransaction

deleteDelayedTransaction() method deletes a specified delayed transaction.

Input

Argument	Mandatory	Description	Format
transactionHash	Yes	Valid, existing delayed transaction	string

Output

In case of success returns an empty JSON object.

curl -d '{"jsonrpc":"2.0","id":1,"password":"passw0rd","method":"deleteDelayedTransaction","params":{"transactionHash":"b3e37..."}}' http://localhost:8070/json_rpc

<?php
$transactionHash = 'b3e37...';
$response = $kryptokronaService->deleteDelayedTransaction($transactionHash);
echo $response;

transaction_hash = '50d83...'
response = walletd.delete_delayed_transaction(transaction_hash)

# If delete is successful, the response will be True
print(response)

transactionHash := "50d83..."
response, err := service.DeleteDelayedTransaction(transactionHash)
if err != nil {
	fmt.Println(err)
} else {
  fmt.Println(response)
}

Expected Output:

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

sendDelayedTransaction

sendDelayedTransaction() method sends a specified delayed transaction.

Input

Argument	Mandatory	Description	Format
transactionHash	Yes	Valid, existing delayed transaction	string

Output

In case of success returns an empty JSON object.

curl -d '{"jsonrpc":"2.0","id":1,"password":"passw0rd","method":"sendDelayedTransaction","params":{"transactionHash":"c37cd..."}}' http://localhost:8070/json_rpc

<?php
$transactionHash = 'c37cd...';
$response = $kryptokronaService->sendDelayedTransaction($transactionHash);

echo $response;

transaction_hash = '50d83...'
response = walletd.send_delayed_transaction(transaction_hash)

# If transaction is sent successful, the response will be True
print(response)

transactionHash := "50d83..."
response, err := service.SendDelayedTransaction(transactionHash)
if err != nil {
	fmt.Println(err)
} else {
  fmt.Println(response)
}

Expected Output:

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

sendFusionTransaction

sendFusionTransaction() method allows you to send a fusion transaction, by taking funds from selected addresses and transferring them to the destination address. If there aren't any outputs that can be optimized, sendFusionTransaction() will return an error. You can use estimateFusion to check the outputs, available for the optimization.

Input

Argument	Mandatory	Description	Format
threshold	Yes	Value that determines which outputs will be optimized. Only the outputs, lesser than the threshold value, will be included into a fusion transaction.	int
anonymity	Yes	Privacy (mixin) level from block 800,000 three (3)	int
addresses	No	Array of strings, where each string is an address to take the funds from.	array
destinationAddress	No	An address that the optimized funds will be sent to. Valid and existing in this container address.	string

• If container contains only 1 address, destinationAddress field can be left empty and the funds are going to be sent to this address.

• If addresses field contains only 1 address, destinationAddress can be left empty and the funds are going to be sent to this address.

• In the rest of the cases, destinationAddress field is mandatory and must contain an address.

Output

Argument	Description	Format
transactionHash	Hash of the sent transaction	string

curl -d '{"jsonrpc":"2.0","id":1,"password":"passw0rd","method":"sendFusionTransaction","params":{"threshold":1000000,"anonymity":3,"addresses":["SEKRxxxx...","SEKRyyyy..."],"destinationAddress":"SEKRzzzz..."}}' http://localhost:8070/json_rpc

<?php
$threshold = 1000000;
$anonymity = 3;
$addresses = ['SEKRxxxx...', 'SEKRyyyy...'];
$destinationAddress = 'SEKRzzzz...';
$response = $kryptokronaService->sendFusionTransaction($threshold, $anonymity, $addresses, $destinationAddress);

echo $response;

threshold = 1000000
anonymity = 3
addresses = ['SEKRxxxx...', 'SEKRyyyy...']
destination_address = 'SEKRzzzz...'
response = walletd.send_fusion_transaction(threshold, anonymity, addresses, destination_address)

print(response)

threshold := 1000000
addresses := []string{"SEKRxxxx...", "SEKRyyyy..."}
destinationAddress := "SEKRzzzz..."
response, err := service.SendfusionTransaction(threshold, addresses, destinationAddress)
if err != nil {
	fmt.Println(err)
} else {
  fmt.Println(response)
}

Expected Output:

{
  "id":1,
  "jsonrpc":"2.0",
  "result":{
    "transactionHash":"93faed..."
  }
}

estimateFusion

estimateFusion() method counts the number of unspent outputs of the specified addresses and returns how many of those outputs can be optimized. This method is used to understand if a fusion transaction can be created. If fusionReadyCount returns a value = 0, then a fusion transaction cannot be created.

Input

Argument	Mandatory	Description	Format
threshold	Yes	Value that determines which outputs will be optimized. Only the outputs, lesser than the threshold value, will be included into a fusion transaction.	int
addresses	No	Array of strings, where each string is an address to take the funds from.	string

Output

Argument	Description	Format
totalOutputCount	Total number of unspent outputs of the specified addresses.	int
fusionReadyCount	Number of outputs that can be optimized.	int

curl -d '{"jsonrpc":"2.0","id":1,"password":"passw0rd","method":"estimateFusion","params":{"threshold":1000000,"addresses":["SEKRxxxx...","SEKRyyyy..."]}}' http://localhost:8070/json_rpc

<?php
$threshold = 1000000;
$addresses = ['SEKRxxxx...', 'SEKRyyyy...'];
$response = $kryptokronaService->estimateFusion($threshold, $addresses);

echo $response;

threshold = 1000000
addresses = ['SEKRxxxx...', 'SEKRyyyy...']
response = walletd.estimate_fusion(threshold, addresses)
print(response)

threshold := 1000000
addresses := []string{"SEKRxxxx...","SEKRyyyy..."}
response, err := service.EstimateFusion(threshold, addresses)
if err != nil {
	fmt.Println(err)
} else {
  fmt.Println(response)
}

Expected Output:

{
  "id":1,
  "jsonrpc":"2.0",
  "result":{
    "fusionReadyCount":0,
    "totalOutputCount":8
  }
}

createIntegratedAddress

createIntegratedAddress() method allows you to create a combined address, containing a standard address and a paymentId, to be used in sendTransaction() or for supplying to a user, instead of using an address and paymentId as separate parameters. This is helpful to ensure users cannot forget to supply a payment Id.

Input

Argument	Mandatory	Description	Format
address	Yes	A valid address	string
paymentId	Yes	A valid paymentId (64char hex string)	string

Output

Argument	Description	Format
integratedAddress	The created integrated address	string

curl -d '{"jsonrpc":"2.0","id":1,"password":"passw0rd","method":"createIntegratedAddress","params":{"paymentId":"7FE73BD90EF05DEA0B5C15FC78696619C50DD5F2BA628F2FD16A2E3445B1922F", "address":"SEKRxxxx..."}}' http://localhost:8070/json_rpc

<?php
$address = 'SEKRxxxx...';
$paymentId = '7FE73BD90EF05DEA0B5C15FC78696619C50DD5F2BA628F2FD16A2E3445B1922F';
$response = $kryptokronaService->createIntegratedAddress($address, $paymentId);

echo $response;

address = 'SEKRxxxx...'
payment_id = '7FE73BD90EF05DEA0B5C15FC78696619C50DD5F2BA628F2FD16A2E3445B1922F'
response = walletd.create_integrated_address(address, payment_id)
print(response)

address := "SEKRxxxx..."
paymentID := "7FE73BD90EF05DEA0B5C15FC78696619C50DD5F2BA628F2FD16A2E3445B1922F"
response, err := service.CreateIntegratedAddress(address, paymentID)
if err != nil {
	fmt.Println(err)
} else {
  fmt.Println(response)
}

Expected Output:

{
  "id": 1,
  "jsonrpc": "2.0",
  "result": {
    "integratedAddress": "SEKRxxx..."
  }
}

getFeeInfo

getFeeInfo() method retrieves the fee and address (if any) that that kryptokronad walletd is connecting to is using. This fee will automatically be added to any transactions sent by sendTransaction() or sendDelayedTransaction(). Note it does not apply to sendFusionTransaction().

No input.

Output

Argument	Description	Format
address	The address of the node owner	string
amount	The fee that will be sent to the node owners address with each transaction	int

curl -d '{"jsonrpc":"2.0","id":1,"password":"passw0rd","method":"getFeeInfo","params":{}}' http://localhost:8070/json_rpc

<?php
$response = $kryptokronaService->getFeeInfo();

echo $response;

response = walletd.get_fee_info()
print(response)

response, err := service.GetFeeInfo()
if err != nil {
	fmt.Println(err)
} else {
  fmt.Println(response)
}

Expected Output:

{
  "id": 1,
  "jsonrpc": "2.0",
  "result": {
    "address": "SEKRxxx...",
    "amount": 5000
  }
}

validateAddress

validateAddress() method takes an address as it's only argument and returns isValid: true/false, depending on the validity of the address provided.

Input

Argument	Description	Format
address	The address to validate	string

Output

Argument	Description	Format
isValid	The result, i.e. wheter the provided address is valid or not	boolean

curl -X POST -i -H "Content-Type: application/json" -d '{"jsonrpc":"2.0","id":"0","password":"passw0rd","method":"validateAddress","params":{"address":"SEKReYisjz5FqzU4bxS48aA5BTcercMddeqsYnoCU2WLNJeeRf1gVwqUHJx3paXBzuVGUJimRsMtKaNABCZLnSUBE2YpVKeyxuj"}}' http://localhost:8070/json_rpc

Expected Output:

{
  "id":"0",
  "jsonrpc":"2.0",
  "result": {
    "isValid":true
  }
}

License

The content in this document was originally written by the Bytecoin (BCN) Developers. It is licensed under the CC BY SA 3.0 license. The source material can be found at the Bytecoin Wiki.

Also of note, kryptokrona developers have altered and adapted the content to suit our implementation of the API. This was done independently of the Bytecoin development team. They neither endorse or acknowledge our changes. Feel free to adopt or change our content as per the CC BY SA 3.0 license requirements.