Blinded Mock Data Challenge for Gravitational-wave Cosmology. I. Assessing the Robustness of Methods Using Binary Black Hole Mass Spectrum - Agarwal, Aman; Dupletsa, Ulyana; Leyde, Konstantin; Mukherjee, Suvodip; Revenu, Benot; Rivera, Juan Esteban; Romano, Antonio Enea; Sah, Mohit Raj; Vallejo-Pena, Sergio; Avendano, Adrian; Beirnaert, Freija; Dalya, Gergely; et al. (Astrophysical Journal, 2025)