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| #!/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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