BTC: Captured mempool base fees by fee-rate band in USD — Last Actual Capture

Bitcoin Captured mempool base fees by fee-rate band in USD — Last Actual Capture: daily data through 9 Nov 2026.

Captured base-fee dollar amounts in twelve disjoint native sat/vB bands.

Why use it. See which native fee-rate bands account for the captured pending fee amount. How to read it. Each hour/day point is the last actual accepted local capture in that UTC bucket, not a time average or flow. Only genuinely retained prospective capture and quote receipts can contribute; earlier ranges remain empty. A later calculation does not prove that this USD value was published at capture time. Missing or unpriced latest captures stay NULL, including a native zero; an older priced capture never replaces them. A complete empty priced population has zero amounts and bands, but undefined mean/median rates. Period labels describe sampling completion, not transaction confirmation. Read priced/total capture counts, gaps and the original capture, quote-observation, quote-receive, calculation and separate postcommit acknowledgement clocks. The weakest monetary source clock is min(capture, quote observation); it expires after one hour without renewal from page requests. Source admission, actual coverage and latest-hour delivery remain API-owned. Smoothing applies to already priced last-capture observations with its declared warmup and missing-window rules.

Calculation. Use the same proved fee population and matched entry-age capture as the total. Assign each transaction once by exact base-fee-satoshi versus Core-policy-vsize boundary comparisons, then value each band's fee satoshis with the same eligible quote /100,000,000. Bands start at 0,1,2,3,5,10,20,50,100,200,500 and1,000 sat/vB; intervals include their lower bound and exclude their upper bound, with no upper limit on the last. This is an absolute USD stack, not percentages or USD-denominated band boundaries. Pair that actual capture C with the newest eligible immutable Alternative.me BTC/USD quote Q, no more than 15 minutes old. Its response must have been fully received at or before the start of C's recorded second; a later correction cannot reprice that earlier capture. Retain exact original rights, raw-body and quote receipts. This is a dollar reference, not an execution price or historical-known-then series. Exact rational monetary totals/bands precede 40-significant-digit half-even output rounding; independently rounded bands need not add byte-exactly. Core policy vsize is distinct from independently decoded raw transaction vsize. This is one local mempool, not a network census, inclusion forecast or fee recommendation.