BTC: UTXOs Aged <155 Days — UTXOs in Loss — Known Basis

Bitcoin UTXOs Aged <155 Days — UTXOs in Loss — Known Basis was 7,280,072 UTXOs on 7 Nov 2026 (latest daily value).

Known-basis unspent outputs whose stock-end quote is below basis for spendable outputs under 155 fixed days old.

Why use it. Compare the number of outputs below their recorded basis independently of output size. How to read it. Strictly lower prices define loss; zero-valued outputs can still count. This is not BTC/USD loss or owners. Unknown basis is excluded; a missing end quote gives NULL. Use exact creation-header age at that snapshot: older means creation time at or before its header time minus 155×86,400 seconds; later or future-dated creations are younger. Header regressions are retained; request time does not age the stock. Read unknown-basis output counts and BTC coverage separately: count coverage and value coverage can differ. Unobserved history stays unknown; genuine source/price holds and partial/provisional/final labels remain in force.

Calculation. Compare the admitted period-end market quote directly with creation-day basis and count each strictly loss-making output once. The spendable snapshot follows the highest canonical block assigned to the UTC period, including eligible coinbase/change but excluding genesis, provably unspendable outputs and BIP30 overwrite losses. Use local canonical Bitcoin outputs and undo facts with separately admitted creation-day-start BTC/USD quotes. Historical daily boundaries use retrospective previous-day closes with unknown release time and vintage; hourly quotes use recorded prospective observations. Method retains provider credits and price rights. Missing prices are never filled.