Read From Blockchain

Set Chain Id

Select the Chain ID from which you want to retrieve user information. By default, this is set to Polygon.

Parameters

New Chain Type (ENetwork Enum)

The type of chain you want to request information from. This includes options like Ethereum Mainnet or Sepolia. Make sure that you select the correct chain for your project from Sequence's Builder.

Get Ether Balance

Use the Indexer API to retrieve the Ether balance for a specified wallet address, such as the local user's address.

// Define success and failure callbacks
const TSuccessCallback<FEtherBalance> GenericSuccess = [=](const FEtherBalance& etherBalance) { };
const FFailureCallback GenericFailure = [=](const FSequenceError& Error) { };
 
// Get a reference of the user's current wallet session.
const TOptional<USequenceWallet*> WalletOptional = USequenceWallet::Get();
if (WalletOptional.IsSet() && WalletOptional.GetValue())
{
    // Example Indexer call
    USequenceWallet * Wallet = WalletOptional.GetValue();
    Wallet->GetEtherBalance(Wallet->GetWalletAddress(), GenericSuccess, GenericFailure);
}

Parameters

Wallet Address (FString)

The wallet address from which you want to retrieve data.

Return Types

Balance (Integer64)

The amount of Ether owned by the specified wallet address.

Get Token Balances

Retrieve the user's token balances for ERC20, ERC721, and ERC1155 tokens. This will return an array of all tokens owned by the user.

const TSuccessCallback<FGetTokenBalancesReturn> GenericSuccess = [=](const FGetTokenBalancesReturn& tokenBalances)
{
    //Response in FGetTokenBalancesReturn
};
const FFailureCallback GenericFailure = [=](const FSequenceError& Error)
{
    //GetTokenBalances Failure
};
 
const TOptional<USequenceWallet*> WalletOptional = USequenceWallet::Get();
if (WalletOptional.IsSet() && WalletOptional.GetValue())
{
    USequenceWallet * Wallet = WalletOptional.GetValue();
    FGetTokenBalancesArgs args;
    args.accountAddress = Wallet->GetWalletAddress();
    args.includeMetaData = true;
    Wallet->GetTokenBalances(args, GenericSuccess, GenericFailure);
}

Parameters

Contract Address (FString)

An ERC20, ERC721 or ERC1155 contract address from which you want to retrieve data.

Wallet Address (FString)

The wallet address which owns tokens on the specified contract address.

Include Metadata (Boolean)

Enable this flag if you want to receive token metadata in the response.

Return Types

Balances (SeqGetTokenBalancesReturn Struct)

Contains a SeqTokenBalance array that lists all token IDs owned by the specified wallet address. If 'Include Metadata' is set to true, token metadata is also included.

Get Token Supplies

Retrieve the token supplies for an ERC20, ERC721, or ERC1155 token.

const TSuccessCallback<FGetTokenSuppliesReturn> GenericSuccess = [=](const FGetTokenSuppliesReturn& tokenSupplies)
{
    //Response is in FGetTokenSuppliesReturn
};
const FFailureCallback GenericFailure = [=](const FSequenceError& Error)
{
    //GetTokenSupplies Failure
};
 
const TOptional<USequenceWallet*> WalletOptional = USequenceWallet::Get();
if (WalletOptional.IsSet() && WalletOptional.GetValue())
{
    USequenceWallet * Wallet = WalletOptional.GetValue();
    FGetTokenSuppliesArgs args;
    args.contractAddress = "0x01";//Testing Contract Address in hex with leading 0x
    args.includeMetaData = true;
    Wallet->GetTokenSupplies(args, GenericSuccess, GenericFailure);
}

Parameters

Contract Address (FString)

An ERC20, ERC721 or ERC1155 contract address from which you want to retrieve token supplies.

Include Metadata (Boolean)

Enable this flag if you want to receive token metadata in the response.

Return Types

Supplies (SeqGetTokenSuppliesReturn Struct)

Contains a SeqTokenSupply array that lists all token IDs available on the specified contract address. Each element contains a 'supply' value. If 'Include Metadata' is set to true, token metadata is also included.

Get Token Supplies Map

Retrieve a collection of token supplies for ERC20, ERC721, or ERC1155 tokens.

const TSuccessCallback<FGetTokenSuppliesMapReturn> GenericSuccess = [=](const FGetTokenSuppliesMapReturn& tokenSuppliesMap)
{
    //Response is in FGetTokenSuppliesMapReturn
};
const FFailureCallback GenericFailure = [=](const FSequenceError& Error)
{
    //GetTokenSuppliesMap Failure
};
const TOptional<USequenceWallet*> WalletOptional = USequenceWallet::Get();
if (WalletOptional.IsSet() && WalletOptional.GetValue())
{
    USequenceWallet * Wallet = WalletOptional.GetValue();
    TMap<FString, FTokenList> tokenMap;
    const TPair<FString,FTokenList> item;
    tokenMap.Add(item);
    FGetTokenSuppliesMapArgs args;
    args.includeMetaData = true;
    args.tokenMap = tokenMap;
    Wallet->GetTokenSuppliesMap(args, GenericSuccess, GenericFailure);
}

Parameters

Token Map (FString->FSeqTokenList Map))

A map of token IDs that you want to retrieve data from.

Include Metadata (Boolean)

Enable this flag if you want to receive token metadata in the response.

Return Types

Supplies (SeqGetTokenSuppliesMapReturn Struct)

Contains a SeqTokenSupply array for each specified ID in the 'Token Map'. Each element contains a 'supply' value. If 'Include Metadata' is set to true, token metadata is also included.

Get Transaction History

Retrieve the transaction history for a wallet- or token address. For example, here we get all transactions for the current user.

const TSuccessCallback<FGetTransactionHistoryReturn> GenericSuccess = [=](const FGetTransactionHistoryReturn& transactionHistory)
{
    //Response is in FGetTransactionHistoryReturn
};
const FFailureCallback GenericFailure = [=](const FSequenceError& Error)
{
    //GetTransactionHistory Failure
};
 
const TOptional<USequenceWallet*> WalletOptional = USequenceWallet::Get();
if (WalletOptional.IsSet() && WalletOptional.GetValue())
{
    USequenceWallet * Wallet = WalletOptional.GetValue();
    FGetTransactionHistoryArgs args;
    args.filter.accountAddress = Wallet->GetWalletAddress();
    args.includeMetaData = true;
    args.page.page = 0;
    args.page.more = true;
    Wallet->GetTransactionHistory(args, GenericSuccess, GenericFailure);
}

Parameters

Account Address (FString)

Specify a wallet address if you want to receive the history for a specific user.

Contract Address (FString)

Specify an ERC20, ERC721 or ERC1155 contract address if you want to receive the history for a specific token.

Include Metadata (Boolean)

Enable this flag if you want to receive token metadata in the response.

Return Types

Transaction History (SeqGetTransactionHistoryReturn Struct)

Contains a SeqTransaction array that lists all transactions.