<p>I suppose it just a succession of lucky event, even if this miner wanted to do a 51% attack, <a href="https://bitcoin.stackexchange.com/questions/658/what-can-an-attacker-with-51-of-hash-power-do">there is not a lot he could have done with it</a>, except as you said break or reduce the trust in the bitcoin network, and someone who have invest that much money into mining equipment must own and will own lots of bitcoin and so have less incentive to try to break it.</p>

CC BY-SA 4.0
2019-11-13T02:50:06.420Z
Thank you very much! And I have another question. Some transaction have multi inputs, like [this transaction](https://www.blockchain.com/btc/tx/9a53cddca1e219f7917ce1475e7bda75c784756d03f6ef4eaa08ca7c3a17e6cd), In my view, one transaction may have many output,but only one input. And I begin to know a concept **UTXO** .  if `A -> B`, `C -> D` some btc， and `B,D -> E, F` . Does this mean that two people B and D give some btc to E and F  simultaneously?  or  there is  one man B or D to initiate this transaction.  Thank you again!
Issem
CC BY-SA 4.0
2019-11-13T03:02:03.030Z
[This transaction](https://www.blockchain.com/btc/tx/43105e5686ca15a0e34463ed399c2a20bd89ed909b1657377c5fed5dd6376e51), there are many input, and takes the change of 124.98. Is it possible to use fewer input and less change？for example reduce 9 input and the change is less than 12.5 btc.
Issem
CC BY-SA 4.0
2019-11-13T13:10:57.323Z
@Issem You should check the answer of this question https://bitcoin.stackexchange.com/questions/43134/how-would-you-end-up-with-more-than-two-transaction-outputs
Saxtheowl
CC BY-SA 4.0
2019-11-12T10:51:04.303Z
2019-11-12T10:51:04.303Z
Saxtheowl
<p>I am new to bitcoin and blockchain, I browed the <a href="https://www.blockchain.com/btc/blocks?page=1" rel="nofollow noreferrer">website</a> just now. There is  a question confusing me,  I find that one miner dig out blocks many times even in one hour. For example, this <a href="https://www.blockchain.com/btc/address/1KFHE7w8BhaENAswwryaoccDb6qcT6DbYY" rel="nofollow noreferrer">miner</a> dig out four block in 6:00 - 7:00 AM. Is it possible that this miner control 51% CPU? And may this would break the whole bitcoin blockchain?</p>

<p>I hope someone can answer me, thanks！</p>

<p><a href="https://i.sstatic.net/c57YL.png" rel="nofollow noreferrer"><img src="https://i.sstatic.net/c57YL.png" alt="screenshot"></a></p>

<blockchain><security><majority-attack><cpuminer>
Why one miner can dig out many blocks continually in one moment?
Issem
# Why one miner can dig out many blocks continually in one moment?

(Asked by: username_0 on 2019-11-12)

I am new to bitcoin and blockchain, I browed the [website](https://www.blockchain.com/btc/blocks?page=1) just now. There is a question confusing me, I find that one miner dig out blocks many times even in one hour. For example, this [miner](https://www.blockchain.com/btc/address/1KFHE7w8BhaENAswwryaoccDb6qcT6DbYY) dig out four block in 6:00 - 7:00 AM. Is it possible that this miner control 51% CPU? And may this would break the whole bitcoin blockchain?

I hope someone can answer me, thanks！

[![screenshot](https://i.sstatic.net/c57YL.png)](https://i.sstatic.net/c57YL.png)

**Tags:** blockchain, security, majority-attack, cpuminer


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## 1 answers

### Answer by username_1 on 2019-11-12. Score: 0 | Accepted answer

I suppose it just a succession of lucky event, even if this miner wanted to do a 51% attack, [there is not a lot he could have done with it](https://bitcoin.stackexchange.com/questions/658/what-can-an-attacker-with-51-of-hash-power-do), except as you said break or reduce the trust in the bitcoin network, and someone who have invest that much money into mining equipment must own and will own lots of bitcoin and so have less incentive to try to break it.

> **Comments:**
> **username_0**: Thank you very much! And I have another question. Some transaction have multi inputs, like [this transaction](https://www.blockchain.com/btc/tx/9a53cddca1e219f7917ce1475e7bda75c784756d03f6ef4eaa08ca7c3a17e6cd), In my view, one transaction may have many output,but only one input. And I begin to know a concept **UTXO** .  if `A -> B`, `C -> D` some btc， and `B,D -> E, F` . Does this mean that two people B and D give some btc to E and F  simultaneously?  or  there is  one man B or D to initiate this transaction.  Thank you again!  
> **username_0**: [This transaction](https://www.blockchain.com/btc/tx/43105e5686ca15a0e34463ed399c2a20bd89ed909b1657377c5fed5dd6376e51), there are many input, and takes the change of 124.98. Is it possible to use fewer input and less change？for example reduce 9 input and the change is less than 12.5 btc.  
> **username_1**: @username_0 You should check the answer of this question https://bitcoin.stackexchange.com/questions/43134/how-would-you-end-up-with-more-than-two-transaction-outputs  

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