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.
//@version=2 //author = https://www.tradingview.com/u/MattDeLong/ study("One White Soldier", overlay=true) oneWhiteSoldier() => open > open and close > open and high > open and close < open and open-close>.02 plotshape(isdaily and oneWhiteSoldier(), style=shape.labelup, size=size.small, location=location.belowbar, color=green)