Questions tagged [time]

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25
votes
2answers
2k views

How does Bitcoin figure out what time it is?

Bitcoin needs to know the current time in order to validate blocks. How does it decide that? Note that I'm talking about the Satoshi client specifically.
8
votes
3answers
1k views

How accurate is Bitcoin network time?

Have any observations been made to conclude the accuracy of Bitcoin network time? It would be interesting to know if NIST or any other authority has tracked the phenomenon.
5
votes
3answers
10k views

How long does it take to download the blockchain? It's been over a day and still going

I'm a newbie to bitcoins, and need some help! I downloaded the Bitcoin client and installed it on my laptop. It is 'Synchronizing with the network' and has been doing this for over a day. Is this ...