fmt := import("fmt")
exch := import("exchange")
t := import("times")

load := func() {
   start := t.add(t.now(), -t.hour*24)
   // 'ctx' is already defined when we construct our bytecode from file.
   // To add debugging information to the request, see verbose.gct. To add account credentials, see account.gct  
   ohlcvData := exch.ohlcv(ctx, "coinbasepro", "BTC-USD", "-", "SPOT", start, t.now(), "1h")
   if is_error(ohlcvData) {
      // handle error
   }
   fmt.println(ohlcvData)
}

load()