BlockTimes.sh

blocks.sh

#!/bin/bash

# Space separated Array of Ethereum block numbers to fetch timestamps for
blockNumbers=(18562256 18562257)

ethRpc="https://rpc.ankr.com/eth"

for blockNumber in "${blockNumbers[@]}"
do
  data="{\"jsonrpc\":\"2.0\",\"method\":\"eth_getBlockByNumber\",\"params\":[\"0x$(printf '%x\n' $blockNumber)\", false],\"id\":1}"

  response=$(curl -s -X POST -H "Content-Type: application/json" --data "$data" $ethRpc)

  # convert from from hex to decimal
  timestampHex=$(echo $response | jq -r '.result.timestamp')

  # Remove the '0x' prefix and timestamp from hex to decimal
  timestampDec=$((16#${timestampHex#0x}))

  # Convert from seconds since epoch to hooman format
  dateReadable=$(TZ=UTC date -r $timestampDec '+%Y-%m-%d %H:%M:%S')

  echo "($blockNumber, '$dateReadable'),"
  # Sleep so the node doesn't complain.
  sleep 1
done