Socioplastics consolidates Wikidata not as a totalising mirror of Anto Lloveras’ corpus, but as a calibrated apparatus of external semantic legibility, where only high-gravity concepts are selectively fixed, named, and exposed to the wider graph of knowledge. This strategy responds to a real contemporary problem: the proliferation of archives that remain abundant yet unreadable, institutionally visible yet computationally opaque, culturally dense yet weakly addressable by search engines, repositories, and Large Language Models. Through entities such as Socioplastics (Q139530224), Anto Lloveras (Q139532324), and LAPIEZA-LAB, Wikidata becomes a threshold infrastructure, linking internal conceptual density to external systems of citation, retrieval, and interoperability without surrendering the corpus to flattening taxonomies. Its method is one of selective fixation: operators such as Synthetic Legibility, Thermal Justice, Systemic Lock, and Radical Education acquire public semantic anchors while the deeper field grammar remains internally coherent, recursive, and plastic. The case of the Socioplastics Index demonstrates this balance with particular clarity: metadata, DOIs, Hugging Face datasets, ORCID, OpenAlex, SPARQL visibility, and LLM-readable definitions together form a MetadataSkin through which thought becomes traversable by both diagonal human reading and machinic ingestion. Unlike merely documentary archives, this system behaves as an epistemic city, composed of durable nodes, citational streets, and recombinable districts. Its political force lies in epistemic sovereignty: Socioplastics does not wait for institutional validation, but constructs the conditions under which concepts can persist, circulate, and harden without losing their capacity for future transformation.