Lucky Miner Selection Algorithm in the Fortuneblock Blockchain

In the Fortuneblock blockchain economic model, a portion of the block reward, specifically 5%, is allocated to a lucky miner. The process of selecting this lucky miner is unique and is based on specific blockchain data elements, such as block hash and block height. This article will provide a detailed explanation of the lucky miner selection algorithm, along with a flowchart to help readers understand the process more clearly.

1. Algorithm Overview

The core of the lucky miner selection algorithm is to generate a random number using the hash value of the previous block and use it to identify the lucky miner’s address. The specific steps are as follows:

1. Retrieve the hash of the previous block: This hash value is used to generate a pseudo-random number.
2. Divide the hash into four parts and perform XOR operation: This step produces a compact pseudo-random number with high randomness.
3. Modulo the previous block height: Use the height of the previous block to take the modulus of the pseudo-random number to determine a specific block height.
4. Find the block with the corresponding height: Based on the result of the previous step, locate the block at the calculated height.
5. Identify the lucky miner: From the identified block, retrieve the address of the miner who successfully mined the block, and that miner becomes the lucky winner for that round.

2. Detailed Algorithm Steps

Step 1: Retrieve the Hash of the Previous Block

The lucky miner selection process begins with the most recently generated block. The first step is to obtain the hash of the previous block (i.e., the block generated just before the current block). A block hash is generated using cryptographic hash functions on the block header data, and it uniquely identifies the block.

Example: Suppose the hash of the previous block is:

0x6f2fbd9c5ebbe79acb4c657fa2dbe0123fa1a786b8d8bbd12d4b2a2cf6890700

Step 2: Divide the Hash into Four Parts and Perform XOR Operation

To generate a pseudo-random number, we divide the hash of the previous block into four parts and then perform bitwise XOR (exclusive OR) operation on these parts. Assuming the hash is divided as follows:

Part 1: 0x6f2fbd9c
Part 2: 0x5ebbe79a
Part 3: 0xcb4c657f
Part 4: 0xa2dbe012

Next, we XOR these four parts to produce the result:

Random Number = Part 1 ^ Part 2 ^ Part 3 ^ Part 4
              = 0x6f2fbd9c ^ 0x5ebbe79a ^ 0xcb4c657f ^ 0xa2dbe012
              = 0x0e4a1733

Step 3: Modulo the Previous Block Height

Next, we use the pseudo-random number generated in the previous step and calculate the remainder when dividing by the height of the previous block. Suppose the height of the previous block is 2560, then the calculation is as follows:

Remainder = 0x0e4a1733 % 2560
          = 581

The remainder 581 represents the block at height 581 on the blockchain.

Step 4: Find the Block with the Corresponding Height

Based on the remainder calculated in step 3, locate the block at height 581 on the blockchain.

Step 5: Identify the Lucky Miner

After identifying the block at height 581, retrieve the address of the miner who successfully mined this block. This miner is designated as the lucky winner for this round and receives the portion of the block reward allocated to the lucky miner.

3. Randomness Analysis

Since block hashes are highly unpredictable and unique for each block, the pseudo-random number generated through the XOR operation is also highly random. This randomness ensures that the selection of the lucky miner is fair and transparent, with no possibility of manipulation. Furthermore, by introducing the previous block height in the modulus operation, additional randomness is added to the process, making the lucky miner selection closely tied to the blockchain’s state.

4. Flowchart

To provide a more intuitive understanding of the lucky miner selection process, the following flowchart illustrates the key steps:

+-----------------------------+
| Retrieve the hash of the     |
| previous block               |
+-----------------------------+
              |
              v
+-----------------------------+
| Divide the hash into four    |
| parts and perform XOR        |
+-----------------------------+
              |
              v
+-----------------------------+
| Modulo the previous block    |
| height with XOR result       |
+-----------------------------+
              |
              v
+-----------------------------+
| Find the block with the      |
| corresponding height         |
+-----------------------------+
              |
              v
+-----------------------------+
| Retrieve the miner address   |
| of the block and designate   |
| them as the lucky miner      |
+-----------------------------+

5. Conclusion

Fortuneblock’s lucky miner selection algorithm leverages the randomness of block hashes and the inherent properties of the blockchain to ensure a fair and unpredictable selection process for lucky miners. This algorithm not only incentivizes miners to participate actively but also ensures the overall transparency and fairness of the system. The mechanism has a significant impact on block reward distribution and enhances the security of the network.

The randomness and fairness of the algorithm make it a compelling feature of the Fortuneblock blockchain. By providing incentives to miners through both regular rewards and the chance to be selected as a lucky miner, the blockchain maintains a robust participation and security framework.