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mutatrum/difficulty_lookback.sh

Last active June 29, 2021 11:27
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difficulty_lookback.sh
#!/bin/bash
BLOCKCHAININFO=$(bitcoin-cli getblockchaininfo)
CURRENTHEIGHT=$(echo $BLOCKCHAININFO | jq -r .blocks)
CURRENTTIME=$(echo $BLOCKCHAININFO | jq -r .mediantime)
BLOCKS=$((CURRENTHEIGHT%2016))
REMAINING=$((2016-BLOCKS))
LOOKBACKHEIGHT=$((CURRENTHEIGHT-REMAINING))
LOOKBACKBLOCK=$(bitcoin-cli getblock $(bitcoin-cli getblockhash $LOOKBACKHEIGHT))
LOOKBACKTIME=$(echo $LOOKBACKBLOCK | jq -r .mediantime)
LOOKBACKDELTA=$((CURRENTTIME-LOOKBACKTIME))
TARGETTIME=$((CURRENTTIME+LOOKBACKDELTA))
STARTHEIGHT=$((CURRENTHEIGHT-BLOCKS))
STARTBLOCK=$(bitcoin-cli getblock $(bitcoin-cli getblockhash $STARTHEIGHT))
STARTTIME=$(echo $STARTBLOCK | jq -r .mediantime)
TOTALTIME=$((TARGETTIME-STARTTIME))
AVERAGETIME=$((TOTALTIME/2016))
PERCENT=$(awk "BEGIN {print -100+(60000/$AVERAGETIME)}")
DATE=$(date -d @$TARGETTIME +'%Y-%m-%d %H:%M')
echo Difficulty adjustment: $PERCENT% on $DATE
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