Analyzing the Bitcoin Blockchain in C

without External APIs

==

Working with NBitcoin, which is a .NET library for interacting with the Bitcoin and Ethereum blockchains, we will explore a possible solution for analyzing the Bitcoin blockchain without using external APIs.

Disclaimer: This approach requires knowledge of the Bitcoin blockchain structure and transactions. Additionally, due to the decentralized nature of the blockchain, this method may not provide accurate or up-to-date information about the status of a specific address.

Analysis:

———-

We will use the built-in library function NBitcoin to read the Bitcoin blockchain and then analyze it to get the status of a specific address. Let’s assume that you have a new key pair created in C

using the NBitcoin API.

Prerequisites:

• Install the [NBitcoin]( NuGet package

• Make sure you are familiar with the Bitcoin blockchain structure and transactions

Code:

using NBitcoin;
Syllabus
{
static void Main(string[] args)
{
// Create a new key pair using NBitcoin
KeyPair key = GetNewKeyPair();
// Connect to a Bitcoin node (replace with your own node or create a testnet)
Node node = new TestNetNode(" // adjust according to your node URL
// Read the Bitcoin blockchain into a byte array
byte[] blockchain = node.Blockchain().Read();
// Parse blockchain data using NBitcoin's Block class
Block block = blockchain[0];
// Find the transaction of interest (e.g. transaction "getaddrinfo", which contains the state)
Transaction tx = block.Transactions.FirstOrDefault(t => t.Type == 2);
if (tx != null)
{
// Extract address from transaction
string address = tx.Address;
// Retrieve the balance of the specified address using NBitcoin's Account class
Account account = node.Accounts.Get(address);
decimal balance = account.Balance;
Console.WriteLine($"Address: {address}, Balance: {balance:C}");
}
else
{
Console.WriteLine("No transactions found.");
}
}
// Helper function to create a new key pair using the NBitcoin API
Static KeyPair GetNewKeyPair()
{
return new KeyPair();
}
}

Explanation:

• We connect to the in-memory Bitcoin node for simplicity.

• We read the entire blockchain into a block byte array.

• We parse the first block using the NBitcoin Block class, which contains transactions.

• We find the transaction that contains the state by filtering the transactions (in this case, the “getaddrinfo” transaction).

• If a transaction is found, we extract its address and use the NBitcoin Account class to get the balance.

Note: This solution assumes that you are working with an in-memory node or creating a testnet. In a real-world scenario, using an active Bitcoin node is crucial for accuracy. Also, note that this approach may not provide accurate information about very short-term balances due to blockchain congestion and other factors.

Please note that this example provides a simplified solution and should not be used for production-grade applications without further testing and validation.