It selects the min/max price for btc/usd from a set of exchanges and shows them on the chart. It is possible to add or remove exchanges by editing the source code
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 publications is governed by House rules. 님은 즐겨찾기로 이 스크립트를 차트에서 쓸 수 있습니다.