We present a resolution of the black hole information paradox within the Unified Fluid Field Theory (UFFT) framework. The event horizon is identified as a substrate opening — a topological threshold in the 12-dimensional substrate from which observable spacetime emerges, across which visible-sector identity degrees of freedom transition into a preserved but inaccessible internal sector. Information is not destroyed at the horizon. It changes sectors. Hawking radiation is the geometry-clock signal of this transition process and is correctly thermal because the opening is information-agnostic at the boundary. The Page curve is reproduced naturally from the dynamics of the substrate interior as it builds and saturates entanglement with infalling identity information. The firewall paradox dissolves because the horizon is a smooth topological threshold in the full 12-dimensional manifold, not a physical surface, and the entanglement identified by AMPS as problematic is between the visible sector and the substrate interior rather than within the visible sector alone. A specific falsifiable prediction is made for analog black hole experiments: R_mg, the transition entropy clock ratio introduced in Barber (2026a, DOI: 10.5281/zenodo.18821542), should show a measurable gradient rising toward the analog horizon in Bose-Einstein condensate systems, with an estimated elevation of 0.15–0.20 above far-field baseline. An appendix provides the minimal substrate topology — the sector-coupling parameter κ and its horizon phase transition — required to follow the argument without the companion volume. The resolution requires no modification of quantum mechanics or General Relativity. It requires recognizing that the event horizon is not what standard physics thinks it is.