Get crypto history price and circulating supply

bitcoinaverage-crypto-history.py

def get_coin_supplies():
    metadata_url = "https://apiv2.bitcoinaverage.com/metadata"
    return make_request(metadata_url)

def get_history_at(days_back):
    history_url = "https://apiv2.bitcoinaverage.com/indices/global/history"
    history_time = datetime.datetime.utcnow() - datetime.timedelta(days=days_back)
    history_timestamp = int(history_time.timestamp())
    results = {}
    for coin in coins:
        coin_history_url = f"{history_url}/{coin}?at={history_timestamp}"
        response = make_request(coin_history_url)
        results[coin] = response
    return results