Possible bug on the bitcoin blockchain? Weird - please explain

[ldrapeau]

I just don't get it, maybe I don't understand the blockchain correctly, how can block 839972 and block 839973 have a time earlier than block 839971?  Thanks, if someone could explain, best, Louis

Code:

bitcoin@bitcoin:~$ for block in {839968..839975}; do echo $block: $(bitcoin-cli getblock $(bitcoin-cli getblockhash $block) 2 | ./jq ".time"); done
839968: 1713555843
839969: 1713556158
839970: 1713556364
839971: 1713558153
839972: 1713558054
839973: 1713558091
839974: 1713558976
839975: 1713559220
bitcoin@bitcoin:~$

[1715237658]

1715237658

[bipshuffle]

See: https://en.bitcoin.it/wiki/Block_timestamp

Timestamps only need to satisfy the following:
"A timestamp is accepted as valid if it is greater than the median timestamp of previous 11 blocks, and less than the network-adjusted time + 2 hours. "Network-adjusted time" is the median of the timestamps returned by all nodes connected to you. As a result block timestamps are not exactly accurate, and they do not need to be. Block times are accurate only to within an hour or two."

[ldrapeau]

Ok, I see, many thanks for the explanation.  Does make sense, regards, Louis

[Bitcoin_Arena]

I also had a similar question sometime back, so this thread^[1] might also be worth looking in to for any one looking for further answers. Some members there gave some excellent responses.
1. What is with these Bitcoin blocks?