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Get estimated halving date from a bitcoin node
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| #!/bin/bash | |
| CURRENT_BLOCK="$(bitcoin-cli getblockcount)" | |
| CURRENT_BLOCK_HASH="$(bitcoin-cli getblockhash $CURRENT_BLOCK)" | |
| CURRENT_BLOCK_TIME="$(bitcoin-cli getblock $CURRENT_BLOCK_HASH | jq '.mediantime')" | |
| HALVING_BLOCK="$(((($CURRENT_BLOCK/210000)+1)*210000))" | |
| BLOCK_DELTA="$(($HALVING_BLOCK-$CURRENT_BLOCK))" | |
| PREVIOUS_BLOCK="$(($CURRENT_BLOCK-$BLOCK_DELTA))" | |
| PREVIOUS_BLOCK_HASH="$(bitcoin-cli getblockhash $PREVIOUS_BLOCK)" | |
| PREVIOUS_BLOCK_TIME="$(bitcoin-cli getblock $PREVIOUS_BLOCK_HASH | jq '.mediantime')" | |
| DELTA_TIME="$(($CURRENT_BLOCK_TIME-$PREVIOUS_BLOCK_TIME))" | |
| HALVING_TIME="$(($CURRENT_BLOCK_TIME+$DELTA_TIME))" | |
| echo "$(date -d @$HALVING_TIME +%F)" |
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Change last line to
echo "$(date -d @$HALVING_TIME --iso-8601=seconds)"to get the time in ISO