BTC: Largest Recognized Mining Label Share

Bitcoin Largest Recognized Mining Label Share was 27.61% on 7 Nov 2026 (latest daily value).

The largest recognized label's block count as a percentage of all observed blocks.

Why use it. Track the largest named-label contribution while keeping attribution gaps in the denominator. How to read it. Use complete period counts before display grouping. Unknown and Ambiguous are not ranked as single operators. Empty periods are undefined. The pinned label list is applied retrospectively. Tags can be spoofed, and different labels can belong to the same operator. Read label coverage alongside these observations. An observed all-unidentified period has a zero recognized share. Missing scalar buckets stay undefined. This is not the largest operator's verified control share. Read actual source coverage and clocks. Open periods remain partial; MTP closure and six later canonical blocks govern finality. The calculation describes unsmoothed observations; chart smoothing is a separate transform.

Calculation. Take the largest named-label count from the full UTC period, divide by all observed blocks including Unknown and Ambiguous, and multiply by 100. Use exact counts and 40-significant-digit Decimal division with half-even rounding. Match literal UTF-8 coinbase-tag bytes with ASCII-only case folding, together with the exact canonical address of coinbase output 0. One candidate gives a named label, none gives Unknown and conflicting candidates give Ambiguous. Use locally validated canonical coinbase facts and the pinned MIT-licensed mining-pool definitions; credits and the dataset revision remain in method details.