Merkle Radici Calculation on Ethereum: a step-by-step guide
Introduction
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Ethereum is a decentralized open source blockchain platform that allows developers to create and distribute intelligent contracts. One of the fundamental aspects of the Ethereum network is its consent mechanism, which is based on the creation of blocks containing a series of transactions. In this article, we will explore how to calculate the Merkle root for a block of genesis in an independent pura application.
What are Genesis blocks?
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A Genesis block is the first block in a blockchain and is used as a starting point for all subsequent blocks. The Genesis block contains metadata on the blockchain and its initial state. To create a Genesis block, we have to calculate the transactions of transactions included in this block.
Merkle roots
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A Merkle root is a digital imprint that represents the set of transactions included in a block. It is calculated by taking the SHH-256 hash of each transaction and then combining them using Betwise operations. The resulting hash acts as a Merkle root for the block.
Calculation of the Radice of the Genesis Block Merkle in C
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Here is a Snappet of Code C example that shows how to calculate Merkle root for a Genesis block:
`c
#include
#Include
// structure to represent a transaction
Typedef Stuct {
Uint256 value; // Transactions data (e.g. account balance, quantity of activity)
} Transaction;
// Function to calculate Merkle root using SHA-256
Uint256 Get_merkle_root (Const Transaction* Transactions) {
Uint256 hash;
Sha256_ctx Sha256;
Sha256_init (& Sha256);
for (int i = 0; i
Const Char* Data = Transactions-> Value.data [i] .bytes;
Uint8* Bytes = New Uint8 [Data];
Sha256_update (& Sha256, data, I + 1);
Hash = Sha256_final (Byte, & Sha256);
Delete [] bytes;
}
return hash;
}
Int Main () {
// Example of Genesis lock transactions
Transaction Transactions [2] = {
{0x00000000, 0x12345678}, // account balance: 10 ether
{0x00000001, 0x90123456} // quantity of activity: 5 units
};
// Calculate Merkle root for the Genesis block
Uint256 Merkle_root = Get_merkle_root (Transactions);
Printf (“Genesis Block Merkle Root: %S \ n”, Hex_string (Merkle_root, 64));
Return 0;
}
`
This fragment of code calculates Merkle root for a simple block of genes containing two transactions. TheGet_merkle_rootgot takes a transactions matrix such as input and uses SHA-256 to calculate Merkle root.
Note that this is only an example implementation and it may be necessary to modify it according to the specific use case.
Conclusion
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The calculation of the Merkle root for a block of genesis in a pure independent c application can be obtained by calculating the SHA-256 hash of each transaction and therefore combining them using Betwise operations. This process provides for the following steps:
- Initialize the SHA-256 context.
- Iteration through each transaction, updating the context with transactions.
- Convert each byte to a Uint8 pointer and updates the context.
- Use the calculation by returning the resulting hash.
By following this approach, it is possible to create a pure C application that calculates the Merkle root for the Genesis blocks independently, without relying on reference client bookcases or other external addictions.