<p>Each transaction can only be included into one block since it spends the coins (outputs) of the origin address. Including it in a second block would be invalid because the coins are already spent.</p>

CC BY-SA 4.0
2021-01-15T17:44:18.837Z
it says that in order to see that your transaction is definitely validated, i'ts a good practice to wait for 6 confirmations. Something is obscure at this level. Does that mean that you have to wait for 6 blocks to be added to the blockchain.
user114154
CC BY-SA 4.0
2021-01-15T20:20:41.887Z
Since a later block can only be valid if all content of all prior blocks was valid, each block makes a transaction harder to change. Therefore, we count additional blocks as additional "confirmations" of events included in prior blocks.
Murch
CC BY-SA 4.0
2021-01-15T13:06:30.220Z
2021-01-15T13:06:30.220Z
Mike D
<p>I would like  to know is there a limit after which a miner cannot include a transaction into his block.</p>

<confirmations><block-validity>
How many times a single transaction can be included into different blocks?
user114141
# How many times a single transaction can be included into different blocks?

(Asked by: username_0 on 2021-01-15)

I would like to know is there a limit after which a miner cannot include a transaction into his block.

**Tags:** confirmations, block-validity


---

## 1 answers

### Answer by username_1 on 2021-01-15. Score: 3

Each transaction can only be included into one block since it spends the coins (outputs) of the origin address. Including it in a second block would be invalid because the coins are already spent.

> **Comments:**
> **username_2**: it says that in order to see that your transaction is definitely validated, i'ts a good practice to wait for 6 confirmations. Something is obscure at this level. Does that mean that you have to wait for 6 blocks to be added to the blockchain.  
> **username_3**: Since a later block can only be valid if all content of all prior blocks was valid, each block makes a transaction harder to change. Therefore, we count additional blocks as additional "confirmations" of events included in prior blocks.  

---

