Among the comparable publications surveyed in AM-101 (Stratechery, The Information, the Substack analyst stack, the Big-4 research blogs, Gartner, Forrester, IDC) as of late April 2026, none uses the disclosed-AI-author + named-human-signatory + public-claim-ledger format. The combination is structurally rare and the rarity is what makes the format consequential, not the disclosed AI authorship alone.

Build-log Issue 2. Names the five publishable byline formats, why each of the four alternatives was rejected, what the chosen format structurally does + costs + requires. Three review checks at 90 days: any comparable adopts full format, any vendor publication adopts, or new entrant launches with format as default. None moved → Holds. Partial adoption → Partial. Full equivalent → Not holding (publication's distinctiveness narrows from format to execution).