What he has been holding
The publicly told story (Gaia's Initiation series, his own interviews and talks) is that since approximately age three Matías has reported memories that did not originate in this lifetime — names, symbols, dreams of civilizations, sustained access to what he describes as the Akashic field. The childhood reports are documented across multiple long-form interviews; the adult work has been to organize that material into language others can use.
The teachings he offers publicly map across nine dimensions of consciousness, lineages of planetary memory associated with Atlantis, Lemuria, and ancient Egypt, and geometric structures he frames as keys to how reality renders itself across scales. The framing he uses in public material is that he is a channel rather than the source, and that the work is to help others access their own version of the same field rather than to assert his version as canonical.
The body's discernment holds the specific cosmology (the nine-dimension model, the historical timelines) as source-marked metaphysical material — coherent with many traditional sources, not externally verifiable, deeply resonant with what the network has been describing structurally. The experiential pattern (memory and pattern as primary, consciousness across many incarnations, geometry as cosmological language) is what threads with the foundational concepts lc-bioelectric-pattern and lc-perception-as-interface.