Insight Indexer .NET Integration

Insight is an extremely useful and performant tool to query blockchain data and can decorate it quite nicely too.

Did you know that vitalik, on Ethereum, Polygon and Arbitrum alone owns 7811 ERC20s, 34,362 ERC721s and 2,818 ERC1155s? Let's go through some examples!

using Thirdweb.Indexer;
 
// Create a ThirdwebInsight instance
var insight = await ThirdwebInsight.Create(client);

// Setup some filters
var address = await Utils.GetAddressFromENS(client, "vitalik.eth");
var chains = new BigInteger[] { 1, 137, 42161 };

// Fetch all token types
var tokens = await insight.GetTokens(address, chains);
Console.WriteLine($"ERC20 Count: {tokens.erc20Tokens.Length} | ERC721 Count: {tokens.erc721Tokens.Length} | ERC1155 Count: {tokens.erc1155Tokens.Length}");

// Fetch ERC20s only
var erc20Tokens = await insight.GetTokens_ERC20(address, chains);
Console.WriteLine($"ERC20 Tokens: {JsonConvert.SerializeObject(erc20Tokens, Formatting.Indented)}");
 
// Fetch ERC721s only
var erc721Tokens = await insight.GetTokens_ERC721(address, chains);
Console.WriteLine($"ERC721 Tokens: {JsonConvert.SerializeObject(erc721Tokens, Formatting.Indented)}");
 
// Fetch ERC1155s only
var erc1155Tokens = await insight.GetTokens_ERC1155(address, chains);
Console.WriteLine($"ERC1155 Tokens: {JsonConvert.SerializeObject(erc1155Tokens, Formatting.Indented)}");

Note: most of these parameters are optional (and some are not showcased here)

// Fetch events (great amount of optional filters available)
var events = await insight.GetEvents(
    chainIds: new BigInteger[] { 1 }, // ethereum
    contractAddress: "0xbc4ca0eda7647a8ab7c2061c2e118a18a936f13d", // bored apes
    eventSignature: "Transfer(address,address,uint256)", // transfer event
    fromTimestamp: Utils.GetUnixTimeStampNow() - 3600, // last hour
    sortBy: SortBy.TransactionIndex, // block number, block timestamp or transaction index
    sortOrder: SortOrder.Desc, // latest first
    limit: 5 // last 5 transfers
);
Console.WriteLine($"Events: {JsonConvert.SerializeObject(events, Formatting.Indented)}");

// Fetch transactions (great amount of optional filters available)
var transactions = await insight.GetTransactions(
    chainIds: new BigInteger[] { 1 }, // ethereum
    contractAddress: "0xbc4ca0eda7647a8ab7c2061c2e118a18a936f13d", // bored apes
    fromTimestamp: Utils.GetUnixTimeStampNow() - 3600, // last hour
    sortBy: SortBy.TransactionIndex, // block number, block timestamp or transaction index
    sortOrder: SortOrder.Desc, // latest first
    limit: 5 // last 5 transactions
);
Console.WriteLine($"Transactions: {JsonConvert.SerializeObject(transactions, Formatting.Indented)}");

Insight can return rich NFT Metadata. Extensions can turn Insight results into familiar NFT objects.

// Fetch ERC721s with extra metadata returned
var erc721Tokens = await insight.GetTokens_ERC721(address, chains, withMetadata: true);
 
// Use ToNFT or ToNFTList extensions
var convertedNft = erc721Tokens[0].ToNFT();
var convertedNfts = erc721Tokens.ToNFTList();
 
// Use NFT Extensions (GetNFTImageBytes, or GetNFTSprite in Unity)
var imageBytes = await convertedNft.GetNFTImageBytes(client);
var pathToSave = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.MyPictures), "nft.png");
await File.WriteAllBytesAsync(pathToSave, imageBytes);
Console.WriteLine($"NFT image saved to: {pathToSave}");