If you are trading Bitcoin you should pay attention on Net Unrealized Profit/Loss chart showing the difference between Relative Unrealized Profit and Relative Unrealized Loss, and it also shows how much of bitcoin circulating supply is in profit or loss.
It is one of the good indicators showing several market stages
(Capitulation, Hope/Fear, Optimism/Anxiety, Belief/Denial, Greed/Euphoria) and when is the best time to buy more or sell and take some profits.
We can see what happened in past with previous Bitcoin bull runs with two main website sources Glassnode and Lookintobitcoin.com.
NUPL = Relative Unrealized Profit − Relative Unrealized Loss
Market Cap − Realized Cap
= ------------------------------
Market Cap
Let's see Glassnode NUPL first with red color showing best times to buy more Bitcoin in Capitulation stages and blue color showing best time to sell because we reached top and stage of Greed in market.
According to Glassnode NUPL we are currently in Belief/Denial stage and you can notice below all the blue tops in previous bull markets of 2011, 2013 and 2017.
https://studio.glassnode.com/metrics?a=BTC&m=indicators.NetUnrealizedProfitLossSecond good website would be Lookintobitcoin.com with chart indicator developed by Tamas Blummer, Tuur Demeester and Michiel Lescrauwaet.
It shows a bit different stages than Glassnode and according to them we entered the Greed stage for Bitcoin.
https://www.lookintobitcoin.com/charts/relative-unrealized-profit--loss/Using both of this websites can be useful to spot the top and bottom but don't look them isolated from other indicators but look wider picture and current world economic situation.
Combination of NUPL, BTC Stock-to-Flow, and MVRV Z-Score indicators may be the best for average traders.