The provenance of the Černohajev collection is direct and unambiguous.

The papers were not acquired from a third party or anonymous source. They were the personal, lifelong work of Valerijs Černohajev, which he sent to his daughter, Natalja Černohajeva-Sticco, shortly before his passing in 2019. The chain of custody is therefore continuous and contained within the immediate family. Our approach has been one of careful custodianship, focused on methodical translation and research rather than sensationalism.

Valerijs Černohajev's verified background as an aerospace engineer educated at the Riga Civil Aviation Engineers Institute and living/working in Priozersk, Kazakhstan, during the 1980s is perfectly congruent with the manuscript's highly technical content .

His career timeline precisely overlaps with the peak activity of the official Soviet UFO investigation program, SETKA, establishing a plausible pathway for his involvement.

Visual analysis of the original notes shows them to be authentic physical artifacts. The collection consists of handwritten notes in Russian cursive, complex hand-drawn schematics, and technical conventions consistent with late-Soviet era (c. 1980-1991) scientific notebooks .

A visual inspection of the original scanned notes reveals numerous indicators of authenticity consistent with the assessed era of their creation (circa 1980s–1990).

• Handwritten and Hand-Drawn Nature: The core of the work consists of handwritten notes in Russian cursive, interspersed with complex, hand-drawn technical schematics . The style is consistent with that of an engineer's working notebook, not a polished publication.

• Era-Consistent Conventions: The typography, the structure of the technical layouts, the mathematical notations, and the scientific terminology are all consistent with late-Soviet scientific and technical documentation.

• Other Indicators: The handwriting is consistent across dozens of pages, suggesting a single author's sustained effort. The use of a pen, with visible ink nuances and pressure variations, points to an original, non-digital creation.

The manuscript's content is not isolated. Our research has identified striking external correlations, most notably:

• Complexity and Detail: The diagrams are far from simple sketches. They depict complex systems with meticulously labeled components. For example, the "Principal Scheme of Pulsed-Type Reactor" includes specific parts like a paramagnetic reactor vessel, MHD and MEG generators, a tritium filtration system, and safety valves with specified pressure ratings (1100 atm).

• Conceptual Coherence: The diagrams illustrate the theoretical concepts described in the text. The theory of "Gravitational-Charge Dualism" is explained with diagrams showing the interaction of gravitational and charge fields between celestial bodies. The propulsion system is detailed in cross-sections of a "saucer," showing the precise placement of aluminum solenoids within a silicon alloy hull, complete with dimensional calculations for determining the craft's mass and required thrust.

• Supporting the Reverse-Engineering Claim: The level of detail—from the metallurgy of the UFO hull to the specific thermonuclear reaction proposed (d+6Li→24He) —visually substantiates our assessment that the work is a "professional and authentic effort to reverse-engineer a UFO".

The strongest indirect evidence supporting the manuscript's claims includes a 1990 Russian patent (RU2017658C1) filed by inventor Gennadiy Nesterov. The technology described in the patent—a multi-environment electromagnetic propulsion craft—aligns with the content of Černohajev's works with remarkable specificity, suggesting they may derive from a shared institutional knowledge base or a common classified research program.