.NET/Unity - Universal Bridge Integration

We've built Universal Bridge to allow your users to use any asset on any chain, and it's ready for you to try.

This integration simplifies onchain asset trading, and we've added extensions in .NET to integrate with any IThirdwebWallet nicely.

Core APIs

The design is akin to letting us know what your intent is.

• Buy: "I want to buy x USDC on y Chain using z Token"
• Sell: "I want to sell x USDC on y Chain for z Token"
• Transfer: "Just transfer all my money to vitalik"

We will return the transactions needed to achieve whatever you desire.
You may then handle execution yourself or use our extensions.

Instantiation

using Thirdweb.Bridge;

// Create a ThirdwebBridge instance
var bridge = await ThirdwebBridge.Create(client);

Buy - Get a quote for buying a specific amount of tokens

var buyQuote = await bridge.Buy_Quote(
    originChainId: 1,
    originTokenAddress: "0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48", // USDC on Ethereum
    destinationChainId: 324,
    destinationTokenAddress: Constants.NATIVE_TOKEN_ADDRESS, // ETH on zkSync
    buyAmountWei: BigInteger.Parse("0.1".ToWei())
);
Console.WriteLine($"Buy quote: {JsonConvert.SerializeObject(buyQuote, Formatting.Indented)}");

Buy - Get an executable set of transactions (alongside a quote) for buying a specific amount of tokens

var preparedBuy = await bridge.Buy_Prepare(
    originChainId: 1,
    originTokenAddress: "0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48", // USDC on Ethereum
    destinationChainId: 324,
    destinationTokenAddress: Constants.NATIVE_TOKEN_ADDRESS, // ETH on zkSync
    buyAmountWei: BigInteger.Parse("0.1".ToWei()),
    sender: await Utils.GetAddressFromENS(client, "vitalik.eth"),
    receiver: await myWallet.GetAddress()
);
Console.WriteLine($"Prepared Buy contains {preparedBuy.Transactions.Count} transaction(s)!");

Sell - Get a quote for selling a specific amount of tokens

var sellQuote = await bridge.Sell_Quote(
    originChainId: 324,
    originTokenAddress: Constants.NATIVE_TOKEN_ADDRESS, // ETH on zkSync
    destinationChainId: 1,
    destinationTokenAddress: "0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48", // USDC on Ethereum
    sellAmountWei: BigInteger.Parse("0.1".ToWei())
);
Console.WriteLine($"Sell quote: {JsonConvert.SerializeObject(sellQuote, Formatting.Indented)}");

Sell - Get an executable set of transactions (alongside a quote) for selling a specific amount of tokens

var preparedSell = await bridge.Sell_Prepare(
    originChainId: 324,
    originTokenAddress: Constants.NATIVE_TOKEN_ADDRESS, // ETH on zkSync
    destinationChainId: 1,
    destinationTokenAddress: "0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48", // USDC on Ethereum
    sellAmountWei: BigInteger.Parse("0.1".ToWei()),
    sender: await Utils.GetAddressFromENS(client, "vitalik.eth"),
    receiver: await myWallet.GetAddress()
);
Console.WriteLine($"Prepared Sell contains {preparedSell.Transactions.Count} transaction(s)!");

Transfer - Get an executable transaction for transferring a specific amount of tokens

Why not just transfer with the SDK? Stay tuned for webhooks, think direct payments!

var preparedTransfer = await bridge.Transfer_Prepare(
    chainId: 137,
    tokenAddress: Constants.NATIVE_TOKEN_ADDRESS, // ETH on zkSync
    transferAmountWei: BigInteger.Parse("0.1".ToWei()),
    sender: await Utils.GetAddressFromENS(client, "vitalik.eth"),
    receiver: await myWallet.GetAddress()
);
Console.WriteLine($"Prepared Transfer: {JsonConvert.SerializeObject(preparedTransfer, Formatting.Indented)}");

Manual Execution

This is not production code, we're just showcasing some of the APIs that would help you execute and poll status here.

// You may use our extensions to execute yourself...
var myTx = await preparedTransfer.Transactions[0].ToThirdwebTransaction(myWallet);
var myHash = await ThirdwebTransaction.Send(myTx);

// ...and poll for the status...
var status = await bridge.Status(transactionHash: myHash, chainId: 1);
var isComplete = status.StatusType == StatusType.COMPLETED;
Console.WriteLine($"Status: {JsonConvert.SerializeObject(status, Formatting.Indented)}");

// Or use our Execute extensions directly to handle everything for you!

Managed Execution

The SDK comes with some extensions that you'll see on a lot of ThirdwebBridge objects, and the main one is Execute.

// Execute a prepared Buy
var buyResult = await bridge.Execute(myWallet, preparedBuy);
var buyHashes = buyResult.Select(receipt => receipt.TransactionHash).ToList();
Console.WriteLine($"Buy hashes: {JsonConvert.SerializeObject(buyHashes, Formatting.Indented)}");

// Execute a prepared Sell
var sellResult = await bridge.Execute(myWallet, preparedSell);
var sellHashes = sellResult.Select(receipt => receipt.TransactionHash).ToList();
Console.WriteLine($"Sell hashes: {JsonConvert.SerializeObject(sellHashes, Formatting.Indented)}");

// Execute a prepared Transfer
var transferResult = await bridge.Execute(myWallet, preparedTransfer);
var transferHashes = transferResult.Select(receipt => receipt.TransactionHash).ToList();
Console.WriteLine($"Transfer hashes: {JsonConvert.SerializeObject(transferHashes, Formatting.Indented)}");

Full Bridge .NET Reference

Links

.NET Release | NuGet Release | Unity Release
Documentation | Support