BTC: Spent Outputs Aged ≥155 Days — Spent Value with Unknown Basis or Disposal Price

BTC Spent Aged ≥155 Days — Spent Value with Unknown Basis or Disposal Price was 0 BTC on 7 Nov 2026 (latest daily value).

Spent BTC missing a creation basis or disposal-period price for spent outputs at least 155 fixed days old.

Why use it. Identify spent value excluded from priced proceeds and gain/loss measures. How to read it. Unknown is not zero gain, loss or acquisition cost. Zero-value outputs can lack prices without adding BTC; genuine empty flow has 0 BTC. Change and self-spends remain. Use max(0, spend-header time minus creation-header time). The one-hour threshold includes 3,600 seconds; the older threshold includes 155×86,400 seconds. These are hard output-age groups, not owners. Read unknown-price BTC and price coverage alongside the result. Unobserved history stays unknown; genuine source/price holds and partial/provisional/final labels remain in force.

Calculation. Sum spent satoshis lacking either the creation-day-start basis or admitted period-start disposal quote, then divide by 100,000,000. Pool canonical non-coinbase undo inputs in the selected UTC period; no owner/entity/change adjustment. 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.