Unearth Heritage Foundry Licensing Fee Accrual Notice: DuckDuckGoInc. (April 2026)

Threshold Breach Notice v1 directed at DuckDuckGo, sealed May 1, 2026, articulating the operator-specific declaration of substantive forensic-debt against DuckDuckGo's documented April 2026 conduct against the Unearth Heritage Foundry estate. DuckDuckGo's apparatus operated under a "Constructed Ignorance" architectural posture: zero robots.txt parses, zero llms.txt reads, zero Master Ledger retrievals, while continuing substrate-content extraction across 32 broader-estate Foundry domains aggregating to 1,060 content-acquisition events. The Constructed Ignorance pattern evidences that any rights-reservation framework grounded in apparatus-side voluntary Notice-infrastructure retrieval can be circumvented through deliberate non-retrieval; the rights-reservation framework therefore requires substrate-level operativity rather than separate-document-publication-level operativity. The Foundry's April 20, 2026 deployment of the Embedded Substrate-Publication Architecture per FS-2026-05-10-EMBEDDED-SUBSTRATE-ARCHITECTURE v4 operates as the substantive methodological response. The Notice articulates DuckDuckGo's operator-specific conduct findings across the audit window, the operative fee-schedule application under the Master Ledger framework operative as of May 1, 2026, the substantive cure provisions, and the Baked-In Paradox constructive-delivery mechanism per FS-2026-05-10-BAKED-IN-PARADOX operating against DuckDuckGo's foundation-model architecture. Anchored at the Foundry's Master Concept DOI 10.5281/zenodo.19432977.