A CNXT 1-of-1 edition of Uchenye Zapiski Kazanskogo Universiteta Seriya Fiziko-Matematicheskie Nauki, a real Crossref journal registry record (ISSN ISSN 2541-7746). Identity is verbatim from the source registry; the web+usd:// address doubles as the edition's settlement rail — reserved until minted.
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