Get cryptocurrency price history with CoinGecko

coingecko-price-history.sh

# Get every month (almost) open price.
# Bash, curl and jq are required.
# Modify YEAR, ID, +09:00 and jpy for yourself.

YEAR=2023
ID=bitcoin
for MONTH in $(seq -w 1 12); do
  FROM=$(date --date="${YEAR}-${MONTH}-01T00:00:00+09:00" +"%s")
  TO=$(  date --date="${YEAR}-${MONTH}-01T01:00:00+09:00" +"%s")
  FILENAME=${YEAR}-${MONTH}.json
  if [ ! -f $FILENAME ]; then
    sleep 1m
    curl "https://api.coingecko.com/api/v3/coins/${ID}/market_chart/range?vs_currency=jpy&from=${FROM}&to=${TO}" > $FILENAME
  fi
  cat $FILENAME | jq '.prices[][1]'
done

# ref. https://www.coingecko.com/api/documentations/v3#/coins/get_coins__id__market_chart_range

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