<p>Yes, theoretically, 2 blocks could be mined at (almost) the same time.
And then, it's also possible that one transaction could be included in those 2 blocks.
But then, there are 2 blockchains, but only one of them (the longest one) will finally be accepted by the network.
So your transaction could be in 2 blocks, but only one time in a blockchain.</p>

CC BY-SA 3.0
2018-01-10T14:02:48.747Z
I see.. one more follow up question, if same set of transactions in multiple blocks are being mined by 10 miners at a given time and two nodes published their solution to blockchain and as you mentioned only one solution will be attached to the chain based on which solution has more length ; but what about other 8 miners ? they still continue to mine it or just stop mining once the solution block is published ?
kakurala
CC BY-SA 4.0
2021-11-03T18:42:15.403Z
There effort will be wasted after block is mined by one minner and it has become part of blockchain.
alternatefaraz
CC BY-SA 3.0
2018-01-10T13:23:18.357Z
2018-01-10T13:23:18.357Z
hardfork
<p>Once the transactions published to blockchain and are included in blocks by miners. In that case there seems a high probability that a single transaction published can be included in multiple blocks created by different miners? is it true</p>

<transactions><blockchain>
can Bitcoin transactions are included in multiple blocks?
kakurala
# can Bitcoin transactions are included in multiple blocks?

(Asked by: username_0 on 2018-01-10)

Once the transactions published to blockchain and are included in blocks by miners. In that case there seems a high probability that a single transaction published can be included in multiple blocks created by different miners? is it true

**Tags:** transactions, blockchain


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## 1 answers

### Answer by username_1 on 2018-01-10. Score: 1

Yes, theoretically, 2 blocks could be mined at (almost) the same time.
And then, it's also possible that one transaction could be included in those 2 blocks.
But then, there are 2 blockchains, but only one of them (the longest one) will finally be accepted by the network.
So your transaction could be in 2 blocks, but only one time in a blockchain.

> **Comments:**
> **username_0**: I see.. one more follow up question, if same set of transactions in multiple blocks are being mined by 10 miners at a given time and two nodes published their solution to blockchain and as you mentioned only one solution will be attached to the chain based on which solution has more length ; but what about other 8 miners ? they still continue to mine it or just stop mining once the solution block is published ?  
> **username_2**: There effort will be wasted after block is mined by one minner and it has become part of blockchain.  

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