diff --git a/Artifacts.toml b/Artifacts.toml
index 6d7efc9b9c99..9b62318e6c22 100644
--- a/Artifacts.toml
+++ b/Artifacts.toml
@@ -3,8 +3,8 @@ git-tree-sha1 = "5c82e5ff3aa99f2aa660c9ffb3caa57ee535cc21"
 lazy = true
 
      [[QSMDB.download]]
-     sha256 = "3f69aae0fca02d74764f709c622388c564e6e144a8b11347dadef5725a65b0a2"
-     url = "https://github.com/oscar-system/Oscar.jl/releases/download/archive-tag-1/qsmdb.tar.gz"     
+     sha256 = "69097d0855cfd2d5e71d5ebf709cf120b42203ff8e74f494be515f98570a55ac"
+     url = "https://martinbies.github.io/Materials/QSMDB/qsmdb.tar.gz"
 
 [gap_extraperfect]
 git-tree-sha1 = "084fa12573e5089ceb3299f9d341f244b415da52"
diff --git a/experimental/FTheoryTools/src/Serialization/hypersurface_models.jl b/experimental/FTheoryTools/src/Serialization/hypersurface_models.jl
index 0dbbc0480181..cd180af29643 100644
--- a/experimental/FTheoryTools/src/Serialization/hypersurface_models.jl
+++ b/experimental/FTheoryTools/src/Serialization/hypersurface_models.jl
@@ -66,16 +66,17 @@ end
 ##########################################
 
 function load_object(s::DeserializerState, ::Type{<:HypersurfaceModel}, params::Tuple{NormalToricVariety, NormalToricVariety, NormalToricVariety, <:MPolyRing, <:MPolyRing})
-  base_space, ambient_space, fiber_ambient_space, R1, R2 = params
+  base_space, amb_space, fiber_ambient_space, R1, R2 = params
   defining_equation = load_object(s, MPolyRingElem, R1, :hypersurface_equation)
   defining_equation_parametrization = load_object(s, MPolyRingElem, R2, :hypersurface_equation_parametrization)
   explicit_model_sections = haskey(s, :explicit_model_sections) ? load_typed_object(s, :explicit_model_sections) : Dict{String, MPolyRingElem}()
   defining_classes = haskey(s, :defining_classes) ? load_typed_object(s, :defining_classes) : Dict{String, ToricDivisorClass}()
-  model = HypersurfaceModel(explicit_model_sections, defining_equation_parametrization, defining_equation, base_space, ambient_space, fiber_ambient_space)
+  model = HypersurfaceModel(explicit_model_sections, defining_equation_parametrization, defining_equation, base_space, amb_space, fiber_ambient_space)
   model.defining_classes = defining_classes
   attrs_data = haskey(s, :__attrs) ? load_typed_object(s, :__attrs) : Dict{Symbol, Any}()
   for (key, value) in attrs_data
     set_attribute!(model, Symbol(key), value)
   end
+  @req cox_ring(ambient_space(model)) == parent(hypersurface_equation(model)) "Hypersurface polynomial not in Cox ring of toric ambient space"
   return model
 end
diff --git a/experimental/FTheoryTools/src/Serialization/tate_models.jl b/experimental/FTheoryTools/src/Serialization/tate_models.jl
index c1090616ff44..5dcb34dfb7aa 100644
--- a/experimental/FTheoryTools/src/Serialization/tate_models.jl
+++ b/experimental/FTheoryTools/src/Serialization/tate_models.jl
@@ -8,7 +8,6 @@ function save_type_params(s::SerializerState, gtm::GlobalTateModel)
   save_data_dict(s) do
     save_object(s, encode_type(GlobalTateModel), :name)
     base, ambient, tp_ring = base_space(gtm), ambient_space(gtm), parent(tate_polynomial(gtm))
-
     save_data_dict(s, :params) do
       for (obj, key) in [(base, :base_space), (ambient, :ambient_space), (tp_ring, :tate_polynomial_ring)]
         if serialize_with_id(obj)
@@ -68,16 +67,17 @@ end
 #########################################
 
 function load_object(s::DeserializerState, ::Type{<: GlobalTateModel}, params::Tuple{NormalToricVariety, NormalToricVariety, MPolyDecRing})
-  base_space, ambient_space, tp_ring = params
+  base_space, amb_space, tp_ring = params
   pt = load_object(s, MPolyDecRingElem, tp_ring, :tate_polynomial)
   explicit_model_sections = haskey(s, :explicit_model_sections) ? load_typed_object(s, :explicit_model_sections) : Dict{String, MPolyRingElem}()
   defining_section_parametrization = haskey(s, :defining_section_parametrization) ? load_typed_object(s, :defining_section_parametrization) : Dict{String, MPolyRingElem}()
   defining_classes = haskey(s, :defining_classes) ? load_typed_object(s, :defining_classes) : Dict{String, ToricDivisorClass}()
-  model = GlobalTateModel(explicit_model_sections, defining_section_parametrization, pt, base_space, ambient_space)
+  model = GlobalTateModel(explicit_model_sections, defining_section_parametrization, pt, base_space, amb_space)
   model.defining_classes = defining_classes
   attrs_data = haskey(s, :__attrs) ? load_typed_object(s, :__attrs) : Dict{Symbol, Any}()
   for (key, value) in attrs_data
     set_attribute!(model, Symbol(key), value)
   end
+  @req cox_ring(ambient_space(model)) == parent(tate_polynomial(model)) "Tate polynomial not in Cox ring of toric ambient space"
   return model
 end
diff --git a/experimental/FTheoryTools/src/Serialization/weierstrass_models.jl b/experimental/FTheoryTools/src/Serialization/weierstrass_models.jl
index 302f03f163e5..e1340fb5ab0d 100644
--- a/experimental/FTheoryTools/src/Serialization/weierstrass_models.jl
+++ b/experimental/FTheoryTools/src/Serialization/weierstrass_models.jl
@@ -8,7 +8,6 @@ function save_type_params(s::SerializerState, w::WeierstrassModel)
   save_data_dict(s) do
     save_object(s, encode_type(WeierstrassModel), :name)
     base, ambient, wp_ring = base_space(w), ambient_space(w), parent(weierstrass_polynomial(w))
-
     save_data_dict(s, :params) do
       for (obj, key) in [(base, :base_space), (ambient, :ambient_space), (wp_ring, :weierstrass_polynomial_ring)]
         if serialize_with_id(obj)
@@ -68,16 +67,17 @@ end
 #########################################
 
 function load_object(s::DeserializerState, ::Type{<: WeierstrassModel}, params::Tuple{NormalToricVariety, NormalToricVariety, MPolyDecRing})
-  base_space, ambient_space, wp_ring = params
+  base_space, amb_space, wp_ring = params
   pw = load_object(s, MPolyDecRingElem, wp_ring, :weierstrass_polynomial)
   explicit_model_sections = haskey(s, :explicit_model_sections) ? load_typed_object(s, :explicit_model_sections) : Dict{String, MPolyRingElem}()
   defining_section_parametrization = haskey(s, :defining_section_parametrization) ? load_typed_object(s, :defining_section_parametrization) : Dict{String, MPolyRingElem}()
   defining_classes = haskey(s, :defining_classes) ? load_typed_object(s, :defining_classes) : Dict{String, ToricDivisorClass}()
-  model = WeierstrassModel(explicit_model_sections, defining_section_parametrization, pw, base_space, ambient_space)
+  model = WeierstrassModel(explicit_model_sections, defining_section_parametrization, pw, base_space, amb_space)
   model.defining_classes = defining_classes
   attrs_data = haskey(s, :__attrs) ? load_typed_object(s, :__attrs) : Dict{Symbol, Any}()
   for (key, value) in attrs_data
     set_attribute!(model, Symbol(key), value)
   end
+  @req cox_ring(ambient_space(model)) == parent(weierstrass_polynomial(model)) "Weierstrass polynomial not in Cox ring of toric ambient space"
   return model
 end