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#!/usr/bin/env bash
##
## You can mine sblocks for schain
##
## Usage:
##
## -h, --help Prints this help message
## --mine Starts mining for SCHAIN
##
fullprogrampath="$(realpath $0)"
PROGRAM=$(basename $0)
descriptionString="Sblock mining"
source $AK_LIBDIR/_ak_log
source $AK_LIBDIR/_ak_script
gather_zblocks(){
if [ "$(cat $AK_ZBLOCKSFILE | jq -r '.[].zblock' | wc -l)" -ne 0 ]
then
cat $AK_ZBLOCKSFILE | \
jq | \
grep -e 'Qm.\{44\}' | \
sed -e 's/\"zblock\"://g; s/ //g;' | \
tr -d '\n'| \
sed -e 's/""/","/g;
s/^/[&/g; s/$/&]/g;
s/^/{"zblocks":&/;
s/$/&,/g'
else
echo -ne '{'
fi
}
proofofwork(){
TEST="$(gather_zblocks)"
MINER="$(ak-gpg --get-key-self-as-ipfs)"
PRE="$(ak-schain --get-latest | jq -r '.latest_block' | tr -d $'\n')"
i=1
l=1; while [ $l = 1 ]
do
TIMESTAMP="$(date -u +%s)"
SHA="$(echo -n $TEST'"nonce":"'$i'","previous":"'$PRE'","timestamp":"'$TIMESTAMP'","miner":"'$MINER'","reward":"40"}' | sha512sum | awk '{ print $1 }')"
# Static difficulty for securing the sblock
echo $SHA | grep -e '^000'
if [ $? -eq 0 ]
then
echo "SHA512 is $SHA"
echo "Mined block:"
echo -n $TEST'"nonce":"'$i'","previous":"'$PRE'","timestamp":"'$TIMESTAMP'","miner":"'$MINER'","reward":"40"}' | jq --compact-output > $AK_MINEDBLOCKSDIR/$SHA
cat $AK_MINEDBLOCKSDIR/$SHA | jq
# exit 0
# Instead of exiting, we will now sleep for 60 seconds
# after that we continue mining on top of the just mined
# block.
sleep 10
proofofwork
fi
i=$(expr $i + 1);
done
}
# Flags to run
if [ ! -z $1 ]
then
case $1 in
-h | --help) _ak_usage; exit;;
--example) example; exit;;
--mine) proofofwork; exit;;
* ) _ak_usage;;
esac
else _ak_usage
fi
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