Ark::Client::Connection<Ark::Client::Api> connection("my.node.ip.address", port);


This service API grants access to the blocks resource. A block is a signed set of transactions created by a delegate and permanently committed to the ARK blockchain.

It is not possible to POST a block through the public API. Relay Nodes accept only blocks posted by a delegate at the correct time through the internal API.

List All Blocks

const auto blocks = connection.api.blocks.all()
>>> std::string

Retrieve a Block

const auto block = connection.api.blocks.get("validBlockId")
>>> std::string

List All Transactions of a Block

const auto blockTransactionss = connection.api.blocks.transactions("validBlockId")
>>> std::string

Search All Blocks

const std::map<std::string, std::string> body = {
{ "id", "validBlockId" },
{ "previousBlock", "validBlockId" },
{ "version", "validVersion" }
const auto walletsSearch = connection.api.blocks.search(body);
>>> std::string


The client SDK can be used to query the delegate resource.

A delegate is a regular wallet that has broadcasted a registration transaction, acquired a sufficient number of votes, and has a Relay Node configured to forge new blocks through a forger module. At any time only 51 delegates are active. They are cost-efficient miners running the ARK network.

Voters are wallets which have broadcasted a vote transaction on a delegate. A vote remains active until an un-vote transaction is sent (it does not have to be recast unless a wallet wishes to change from delegate). Voting for a delegate does not give the delegate access to the wallet nor does it lock the coins in it.

List All Delegates

const auto delegates = connection.api.delegates.all();
>>> std::string

Retrieve a Delegate

const auto delegate = connection.api.delegates.get("validDelegateId");
>>> std::string

List All Blocks of a Delegate

const auto delegateBlocks = connection.api.delegates.blocks("validDelegateId");
>>> std::string

List All Voters of a Delegate

const auto delegateVoters = connection.api.delegates.voters("validDelegateId");
>>> std::string


The ARK network consists of different anonymous nodes (servers), maintaining the public ledger, validating transactions and blocks and providing APIs. The node resource allows for querying the health and configurations of the node used by the instantiated client.

Retrieve the Configuration

const auto nodeConfiguration = connection.api.node.configuration();
>>> std::string

Retrieve the Status

const auto nodeStatus = connection.api.node.status();
>>> std::string

Retrieve the Syncing Status

const auto nodeSyncing = connection.api.node.syncing();
>>> std::string


Each node is connected to a set of peers, which are Relay or Delegate Nodes as well. The peers resource provides access to all peers connected to our node.

Peers have made their Public API available for use; however for mission-critical queries and transaction posting you should use a node which is under your control. We provide a guide to setting up a Relay Node here.

List All Peers

const auto peers = connection.api.peers.all();
>>> std::string

Retrieve a Peer

const auto peer = connection.api.peers.get("validIpAddress");
>>> std::string


The heart of any blockchain is formed by its transactions; state-altering payloads signed by a wallet. Most likely you will be querying for transactions most often, using the transaction resource.

A transaction is the only object which may be posted by a non-delegate. It requires a signature from a wallet containing a sufficient amount of ARK.

Create a Transaction

std::string jsonTransaction = "{"
const auto transaction = connection.api.transactions.send(jsonTransaction);
>>> std::string

Retrieve a Transaction

const auto transaction = connection.api.transactions.get("validTransactionId");
>>> std::string

List All Transactions

const auto transactions = connection.api.transactions.all();
>>> std::string

List All Unconfirmed Transactions

const auto unconfirmedTransactions = connection.api.transactions.allUnconfirmed();
>>> std::string

Get Unconfirmed Transaction

const auto transactionUnconfirmed = connection.api.transactions.getUnconfirmed("validTransactionId");
>>> std::string

Search Transactions

const std::map<std::string, std::string> body = {
{ "height", "validHeight" }
const auto transactions = connection.api.transactions.search(body);
>>> std::string

List Transaction Types

const auto transactionTypes = connection.api.transactions.types();
>>> std::string


A vote is a transaction sub-type, where the asset field contains a votes object and the transaction.type is 3.

List All Votes

const auto votes = connection.api.votes.all();
>>> std::string

Retrieve a Vote

const auto vote = connection.api.votes.get("validVoteId");
>>> std::string


The wallet resource provides access to:

  • Wallets.

  • Incoming and outgoing transactions per wallet.

  • Each wallet's votes.

Retrieve All Wallets

const auto wallet = connection.api.wallets.all();
>>> std::string

Retrieve a Wallet

const auto wallet = connection.api.wallets.get("validWalletId");
>>> std::string

List All Transactions of a Wallet

const auto walletTransactions = connection.api.wallets.transactions("validAddress");
>>> std::string

List All Received Transactions of a Wallet

const auto walletTransactionsReceived = connection.api.wallets.transactionsReceived("validWalletAddress")
>>> std::string

List All Sent Transactions of a Wallet

const auto walletTransactionsSent = connection.api.wallets.transactionsSent("validWalletAddress")
>>> std::string

List All Votes of a Wallet

const auto walletVotes = connection.api.wallets.votes("validWalletAddress")
>>> std::string

List All Top Wallets

const auto walletsTop = connection.api.wallets.top();
>>> std::string

Search All Wallets

const std::map<std::string, std::string> body_parameters = {
{ "username", "validUsername" },
{ "address", "validAddress" },
{ "publicKey", "validPublicKey" }
const auto walletsSearch = connection.api.wallets.search(body_parameters);
>>> std::string