Original WochenBlick interface text, styles and monogram: independently authored for this repository; no competitor assets or source copied.
Chart implementation: Apache ECharts 6.1.0, Apache-2.0; installed LICENSE and NOTICE retained by root release process.
Development tool: Vite 8.3.2, MIT; dependency notices remain in metadata.
Data: Firsthand Bitcoin (https://firsthandbitcoin.com/data) public feed; shared API supplies per-feed license metadata. Upstream commercial provenance remains pending independent review.
Methodology reference: PlanB / Philip Swift, 200 Week Moving Average Heatmap, https://www.lookintobitcoin.com/charts/200-week-moving-average-heatmap/. Our implementation uses completed Sunday UTC closes and four own growth bins, not an exact reproduction of reference colors.