Each board ranks the addresses holding one tag. Boards are curated, not exhaustive: a tag appears when it has enough active circulation and collectors to make a ranking meaningful.
Every tag gets a tier from its active B630k circulation — sats held by an address that has received bitcoin at or after block 630,000 (2020-05-11, the third halving). It is a proxy for sats that are not lost or dormant, measured per address, not per sat. Basic is over 1,000,000 active sats and only single-dimension tags; the six S tiers step down tenfold — fewer than 1,000,000, 100,000, 10,000, 1,000, 100 and 10 — down to the last of its kind.
Sequestered means a sat sitting alone in a UTXO of 1,000 sats or less — deliberately isolated so it can be moved or listed on its own. Collectors are the distinct addresses holding sequestered sats, excluding addresses with more than 10 BTC, so exchanges, custodians and dormant early wallets stay out. Holders is every address holding one of these sats, most of them unaware. Ranks are per address, so a collector spread over several addresses ranks lower than they should.
Hover an address for how much bitcoin it holds; hover a tier badge for its definition. Numbers come from the weekly full-chain rebuild, so a move made this week shows up next Sunday.