Definition. Cost Basis Distribution (CBD) Quantiles is the distribution of realized prices for unspent digital assets, divided into 100 quantiles (percentiles) for each day. It provides a granular view of where total supply was acquired, supports identification of the share of supply acquired below the current market price (and therefore potentially at a loss), and surfaces price levels with denser supply concentration as denser clustering of the quantile lines over a given time range. Cost Basis Distribution Heatmap is a related metric.

Technical. All CBD metrics use an address-based approach, analyzing holdings at the individual wallet-address level for consistency across digital assets and comparability across blockchain architectures. This contrasts with a UTXO-based approach (used in metrics like URPD), which categorizes supply based on unspent transaction outputs and is typically used for chains like Bitcoin. Metrics for UTXO-based assets may therefore show slight differences when compared across these distinct computational methods. Cost basis is an address's balance-weighted average acquisition price, so each address contributes its full balance to a single price level. For ETH tokens, burn addresses are excluded.