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That was the talk that Dan Kaminsky introduced the tribute and didn't really explained why. https://www.youtube.com/watch?v=hLIYq3ePaX4&t=502s&ab_channel=DennisMuller
On my full node it doesn't really appear to be the same thing.
~/.bitcoin/blocks# strings -n 20 blk00001.dat
=ybegin line=128 siz
e=8776 name=bitcoin.
***2*.+D*/***+***h+E
*/***+***p+R*-***+*,
**+[*,***;***x******
0010/211133246>76556
C<=}9>GDIHGDFFJNXQJL
VMFFRaSVZ[^^^IQcgb\f
KFK\\\\\\\\\\\\\\\\\
\\\\\\\\\\\\\\\\\\\\
+/++++++********+,-.
DPQRST_`abcdmnopqrst
*>{o*>{o*>{o*>{o*>{o
z+o>z+o>z+o>z+o>z+o>
z+o>z+o>z+o>z+o>z+o>
z+o>z+o>z+o>z+o>z+o>
z+o>z+o>z+o>z+o>z+o>
z+o>z+o>z+o>z+o>z+o>
z+o>z+o>z+o>z+o>z+o>But it appears on block 3:
~/.bitcoin/blocks# strings -n 20 blk00003.dat ---BEGIN TRIBUTE--- #./BitLen ::::::::::::::::::: :::::::.::.::.:.::: :.: :.' ' ' ' ' : : :.:'' ,,xiW,"4x, '' : ,dWWWXXXXi,4WX, ' dWWWXXX7" `X, lWWWXX7 __ _ X :WWWXX7 ,xXX7' "^^X lWWWX7, _.+,, _.+., :WWW7,. `^"-" ,^-' WW",X: X, "7^^Xl. _(_x7' l ( :X: __ _ `. " XX ,xxWWWWX7 )X- "" 4X" .___. ,W X :Xi _,,_ WW X 4XiyXWWXd "" ,, 4XWWWWXX , R7X, "^447^ R, "4RXk, _, , TWk "4RXXi, X',x lTWk, "4RRR7' 4 XH :lWWWk, ^" `4 ::TTXWWi,_ Xll :.. =-=-=-=-=-=-=-=-=-= LEN "rabbi" SASSAMA 1980-2011 ... ... ...
Apart from the Dan Kaminsky "bug", I think this shouldn't happen. Right?
The blk?????.dat files aren't individual blocks. Rather, they are files that contain multiple blocks concatenated together, in the order Bitcoin Core downloaded them. Once a maximum size is reached, further blocks will be written to a subsequent file.
Bitcoin Core downloads blocks out of order, as it schedules block queries from multiple peers at once.
There is no guarantee that any two nodes receive blocks in the same order, and thus also no guarantee that they end up in the same files or even the same position within those files.
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