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2024-09-05 22:14:04
I have searched the web for "Find bitcoin block number from historical date" maybe 100 times in my life.

Never again.

You'll need a bitcoin node for this to work. The script is fast.

Install

WoT Install

one liner ```

curl

curl -o fjb.sh https://gist.githubusercontent.com/dskvr/18252c16cf85c06c1ee6cb5ae04a3197/raw/34bad6a35d98501978c8cd0c25b1628db1191cfe/fjb.sh && chmod +x fjb.sh

wget

wget -O fjb.sh https://gist.githubusercontent.com/dskvr/18252c16cf85c06c1ee6cb5ae04a3197/raw/34bad6a35d98501978c8cd0c25b1628db1191cfe/fjb.sh && chmod +x fjb.sh ```

Trust no one.

create file ``` vi fjb.sh

or

nano fjb.sh ```

review, copy and past into file ``` TIMESTAMP=$1 LOWER=0 UPPER=$(bitcoin-cli getblockcount)

while (( LOWER <= UPPER )); do MID=$(( (LOWER + UPPER) / 2 )) BLOCKHASH=$(bitcoin-cli getblockhash $MID) BLOCKTIME=$(bitcoin-cli getblockheader $BLOCKHASH | jq .time)
```
if (( BLOCKTIME < TIMESTAMP )); then
    LOWER=$(( MID + 1 ))
elif (( BLOCKTIME > TIMESTAMP )); then
    UPPER=$(( MID - 1 ))
else
    echo "$BLOCKTIME"
    exit 0
fi
```
done

echo "$UPPER" ```

give executable permissions chmod +x ./fjb.sh

Usage

./fjb.sh <timestampSeconds> It returns block number only

Example

$: ./fjb.sh 1668779310 763719
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