BTC: UTXOs Aged <155 Days — Eligible Unspent Output Count

Bitcoin UTXOs Aged <155 Days — Eligible Unspent Output Count was 11,727,684 UTXOs on 7 Nov 2026 (latest daily value).

Eligible unspent outputs with known or unknown basis for spendable outputs under 155 fixed days old.

Why use it. Compare the number of native spendable outputs independently of their value. How to read it. This includes zero-valued outputs. It is neither a count of addresses/owners nor evidence that all outputs have prices. 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. Count each eligible unspent output once; known-basis plus unknown-basis counts reconcile to this total. 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.