BTC: Exchange Drain Score (All Coins)

Bitcoin Exchange Drain Score (All Coins): daily data through 8 Nov 2026.

How unusual each exchange's net outflow is over the past 24 hours, across every coin we cover, against its own previous 90 days.

Why use it. A single reading of whether coins are leaving an exchange faster than usual, comparable across exchanges of any size. How to read it. Zero is a normal day for that exchange; below -2 is an unusual net outflow and below -3 with at least 1% of reserves gone is the red light of our exchange monitor. Spikes up are unusual net inflows.

Calculation. For each exchange and hour: r = net flow over the 24 hours to the end of the hour / its covered reserves 24 hours earlier, all coins in US dollars; the score is (r - the mean of r over the 90 days before those 24 hours) / their standard deviation, floored at 0.2% of reserves. Hours when the exchange held under $50 million 24 hours earlier are left out (a small balance makes any inflow look enormous). Days show the 24 hours of that UTC day. The exchanges are the ones that publish their addresses (Binance, OKX, Bitfinex, Bybit, Crypto.com, KuCoin and HTX), read on our own Bitcoin, Ethereum, Litecoin, Dogecoin and Bitcoin Cash nodes; every coin of an exchange counts together in US dollars at each hour's price (the dollar stablecoins on Ethereum at $1). Net flow is what reached its listed addresses from outside them minus what left them; moves between its own addresses never count, moves to another exchange do (for Ether, the change in balance). An address list applies to its whole history, so a list published late can make early years read as inflows when an exchange first used those addresses. A low score is a signal to look closer, not a verdict: it can also be an exchange moving coins to new wallets it has not published yet. An hour is stored only when every coin had completed it.