The Programme Note is a navigational aid for readers of the Obligation Density Programme bundle (17 deposited papers, OD_00 through OD_16). It summarises which paper performs which function within the bundle’s architecture, allowing readers entering from any single paper to locate themselves within the broader composition. The Note is not itself part of the framework; rather, it is a short reference document describing the framework’s overall structural shape. The bundle formalises a structural–mathematical diagnostic for systemic fragility: obligation density Ω(t) = M(t) / (C(t)·S(t)), representing total claims relative to effective survivable capacity. Its central claim is that the systematic under-measurement of Ω(t) by mainstream instruments reflects a deeper constitutional structure—the Witness Principle—which establishes that the public side of any administrative system has zero standing on the private ledger of entities within its jurisdiction. This same structural object operates across three independently developed domains—combinatorial mathematics, common-law evidentiary doctrine, and economic ledgers—and is normatively anchored across three legal-philosophical traditions on the observation side (Privacy Foundation) and three more on the extraction side (Property Foundation). The Programme Note maps each of the seventeen papers in the bundle to its structural role within the framework: macro entry (OD_00); constitutional foundation (OD_01); individual and population layer (OD_02, OD_03); static–dynamic–constructive trilogy (OD_04, OD_05, OD_06); network–correlation paper (OD_07); empirical specification (OD_08); firm-scale instance (OD_09); cross-scale composition (OD_10); cross-domain formalisation (OD_11); constitutional triad anchors (OD_12 Privacy, OD_14 Property, with a third Foundation under preparation); cross-domain postscript (OD_13); empirical test log (OD_15); and distributed-consensus instance (OD_16). It also provides a recommended reading order, clarifies what the bundle does not claim, and points to companion works deposited separately on Zenodo.