Bitcoin Forum

Bitcoin => Bitcoin Technical Support => Topic started by: ds2013 on August 21, 2013, 10:15:18 PM

Title: Timestamp of block 253461 wrong?
Post by: ds2013 on August 21, 2013, 10:15:18 PM

How is this possible??

Block	Timestamp
253462 (https://blockchain.info/block-height/253462)	2013-08-21 20:55:38
253461 (https://blockchain.info/block-height/253461)	2013-08-21 21:34:10
253460 (https://blockchain.info/block-height/253460)	2013-08-21 20:44:03

Title: Re: Timestamp of block 253461 wrong?
Post by: jackjack on August 21, 2013, 10:17:13 PM

I know there's a tolerance about timestamps, I don't know how much

Found: it's 2 hours https://en.bitcoin.it/wiki/Block_timestamp

Title: Re: Timestamp of block 253461 wrong?
Post by: DannyHamilton on August 22, 2013, 01:28:02 AM

Quote from: ds2013 on August 21, 2013, 10:15:18 PM

How is this possible??

It is nearly impossible to keep the clocks of every single node in the bitcoin network perfectly in sync. Therefore, the protocol allows some tolerance in timestamps. This variation can result in the timestamp of a block occasionally being earlier than the timestamps on some of the previous blocks.