Visualizing Bitcoin Blockchain Block Hashes

This video shows a visualization of the hashes of the blocks on the Bitcoin blockchain which shows the difficulty increasing over time.

Scripts used to produce output:

Script 1 to export data from bitcoin-cli:

for block in $(seq 1 $(bitcoin-cli getblockcount)); do hash="bitcoin-cli getblockhash $block";
diff=bitcoin-cli getblock $hash | grep "^ \"difficulty\" :" | awk '{print $3}' | tr -d ',' date=bitcoin-cli getblock $hash | grep "^ \"time\" :" | awk '{print $3}' | tr -d ',' date2=date -d @$date printf "%-65s %-8s %-22s %-15s\n" $hash $block $diff "$date2" done

Script 2 to produce output file:

cat hashes | while read line; do hash=echo $line | awk '{print $1}' | tr [a-z] [A-Z] height=echo $line | awk '{print $2}' date=echo $line | awk '{print $5 " " $6 " " $9}' export BC_LINE_LENGTH=300 bin=echo "ibase=16;obase=2;$hash" | bc length=${#bin} zeros=expr 256 - $length for zero in seq 1 $zeros ; do if [ "$zero" -eq 32 ] ; then echo -n -e '\E[37;41m'"\033[1m0\033[0m" else echo -n -e '\E[33;44m'"\033[1m0\033[0m" fi done printf "%-20s %-7s %-12s\n" "$bin" "$height" "$date" done ... https://www.youtube.com/watch?v=xWyJ0gO7bh8