library(jsonlite)
## Warning: package 'jsonlite' was built under R version 4.4.3
url <- "https://min-api.cryptocompare.com/data/v2/histoday?fsym=BTC&tsym=USD&limit=100"
raw_data <- fromJSON(url)
btc_history <- raw_data$Data$Data
max_close_price <- max(btc_history$close, na.rm = TRUE)
print(max_close_price)
## [1] 96945.09