<p>There's a unix timestamp in the block message. <a href="https://en.bitcoin.it/wiki/Protocol_specification#block" rel="nofollow">https://en.bitcoin.it/wiki/Protocol_specification#block</a></p>

<p>So you would be able to get know the transaction hit the blockchain down to roughly a 10 minute resolution.</p>

CC BY-SA 3.0
2011-11-25T18:25:55.047Z
I think the timestamp in the block can be off my more than 10 minutes.It can be manipulated by the miner finding the block within certain limits. Blocks are considered valid if their time is greater than the median of the last 11 blocks and less than currentTime + 2 hours.
kirian
CC BY-SA 3.0
2011-11-26T07:09:29.693Z
Also, the transaction could have happened quite some time before a miner decided to include it.
Thilo
CC BY-SA 3.0
2011-11-25T14:13:45.950Z
2011-11-25T14:13:45.950Z
Ian Purton
<p>Is there something like a timestamp of each transaction recorded in the block chain, or only the mere fact that the transaction was done?</p>

<blockchain><protocol>
Is the time a transaction was done recorded in the block chain?
ria
# Is the time a transaction was done recorded in the block chain?

(Asked by: username_0 on 2011-11-25)

Is there something like a timestamp of each transaction recorded in the block chain, or only the mere fact that the transaction was done?

**Tags:** blockchain, protocol


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## 1 answers

### Answer by username_1 on 2011-11-25. Score: 3 | Accepted answer

There's a unix timestamp in the block message. <https://en.bitcoin.it/wiki/Protocol_specification#block>

So you would be able to get know the transaction hit the blockchain down to roughly a 10 minute resolution.

> **Comments:**
> **username_2**: I think the timestamp in the block can be off my more than 10 minutes.It can be manipulated by the miner finding the block within certain limits. Blocks are considered valid if their time is greater than the median of the last 11 blocks and less than currentTime + 2 hours.  
> **username_3**: Also, the transaction could have happened quite some time before a miner decided to include it.  

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