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Bitcoin: Can multiple candidate blocks be mined concurrently by the miner, even if at the end only one block gets added to the chain every 10 mins?

Published by Terlumun Aondover on February 8th, 2025.

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The drvel of simultaneous block mining in bitcoin

In Bitcoin’s consensus mechanism, miners are responsible for validating new transactions and adding them to blockchain. The current algorithm requires a miner to select a block as the “candidate block”, solving a complex mathematical puzzle (work test) using specialized hardware known as graphic processing units (GPUS). However, there is an intriguing aspect to consider: Can several candidate blocks be extracted simultaneously?

To delve into this question, we will break the process step by step:

Create Block Candidate

: Mineiro uses specialized software (eg C ++) to create a new block based on the transactions it has processed. This block is called “Block of Candidate”.

In practice, this leads to a single miner who controls the consensus of the network.

Broadcasting : The selected candidate block is transmitted to the Bitcoin network.

Now, let’s address the question: Can several candidate blocks be extracted simultaneously? To understand this concept, we need to consider the following:

* NETWORK LATENCE : When miners look for tx_mempool transactions, they receive a instantaneous blockchain state. This means that all miners have access to the same data at any time.

* Work test complexity : The workproof algorithm is extremely complex, making it difficult to converge several miners in a single candidate block in 10 minutes.

Despite these challenges, we will examine some theoretical scenarios:

* Network Fragmentation : In a scenario where several miners try to mine simultaneously, the network can fragment. This occurs when different miners receive conflicting data from TX_MEMPOOL, causing them to differ in their calculations.

* Miners Synchronization : Even if several miners are trying to mine simultaneously, they can still synchronize with each other through communication and coordination.

Conclusion

Bitcoin: Can multiple candidate blocks be mined concurrently by the miner, even if at the end only one block gets added to the chain every 10 mins?

Although it is theoretically possible that several candidate blocks are extracted simultaneously, this would require significant coordination between miners. However, the current consensus mechanism is designed so that only one block can be selected as the “winner”. The probability of simultaneous mining is low due to network fragmentation, synchronization of miners and complexity of the work test.

In short, although theoretically it is possible for several candidate blocks to be extracted simultaneously, this would require significant coordination among miners. The current consensus mechanism ensures that only one block is selected as the winner, making it difficult to imagine a scenario in which several candidate blocks are added to the blockchain at the same time.

References