This indicator will only display if viewing an ETH chart.
More information on the ETH here:
What's different: CME's BTC and ETH markets trade the same hours, but one may hit a limit breaker while there may be a case where the other does not.
Sorry if I haven't replied to your message yet, I'm a bit backlogged :)
In true TradingView spirit, the author of this script has published it open-source, so traders can understand and verify it. Cheers to the author! You may use it for free, but reuse of this code in a publication is governed by House Rules. You can favorite it to use it on a chart.