BTC: Mining Label Coverage

Bitcoin Mining Label Coverage was 97.01% on 7 Nov 2026 (latest daily value).

The percentage of observed canonical blocks assigned one named mining label.

Why use it. Assess how much of the block population is represented by recognized-label statistics. How to read it. 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. A low percentage means less attribution coverage, not less mining activity. A nonempty all-unidentified period has zero coverage; an absent scalar bucket is undefined. 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. Divide single-candidate block count by every observed canonical block, including Unknown and Ambiguous, and multiply by 100. Missing coinbase facts stop the source frontier instead of adding Unknown blocks. 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. Assign complete canonical blocks to UTC hours or days using their header timestamps, retaining timestamp regressions. Use locally validated canonical coinbase facts and the pinned MIT-licensed mining-pool definitions; credits and the dataset revision remain in method details.