Miner/pool in/out + reserve — BTC in/out of labeled miner & pool wallets (per-tx netted) + their running reserve
Miner flows & reserve follows the movement or balance of Bitcoin at labeled market participants: Miner/pool in/out + reserve. It helps put exchange, whale, miner and custody activity into context.
Miner outflow spikes = treasury selling (supply pressure). A rising miner reserve = miners confident enough to hold newly mined coins.
Entity labels are probabilistic and wallets are often reorganized. A flow is evidence of movement, not proof of an investor's intent or a future price move.