Definition. Gini Coefficient is the classical inequality statistic applied to the distribution of coins over addresses. Herfindahl Index and Percent of Supply Held by Top 1% Addresses are related concentration metrics.

Technical. For ETH and ETH tokens, exchange addresses, smart-contract addresses, and other special asset-specific addresses (e.g. team-fund addresses) are excluded. For ETH tokens, burn addresses are excluded.

Interpretation. Values run from 0 (perfectly even distribution across all addresses) to 1 (one address holding the entire included supply).