diff --git a/ebin/hakuzaru.app b/ebin/hakuzaru.app
index b2de17c..5670719 100644
--- a/ebin/hakuzaru.app
+++ b/ebin/hakuzaru.app
@@ -3,6 +3,6 @@
               {included_applications,[]},
               {applications,[stdlib,kernel]},
               {description,"Gajumaru interoperation library"},
-              {vsn,"0.3.1"},
+              {vsn,"0.3.2"},
               {modules,[hakuzaru,hz,hz_fetcher,hz_man,hz_sup]},
               {mod,{hakuzaru,[]}}]}.
diff --git a/src/hakuzaru.erl b/src/hakuzaru.erl
index d134594..dbed4b7 100644
--- a/src/hakuzaru.erl
+++ b/src/hakuzaru.erl
@@ -6,7 +6,7 @@
 %%% @end
 
 -module(hakuzaru).
--vsn("0.3.1").
+-vsn("0.3.2").
 -author("Craig Everett <ceverett@tsuriai.jp>").
 -copyright("Craig Everett <ceverett@tsuriai.jp>").
 -license("GPL-3.0-or-later").
diff --git a/src/hz.erl b/src/hz.erl
index 1fec2c3..948f1ef 100644
--- a/src/hz.erl
+++ b/src/hz.erl
@@ -23,7 +23,7 @@
 %%% @end
 
 -module(hz).
--vsn("0.3.1").
+-vsn("0.3.2").
 -author("Craig Everett <ceverett@tsuriai.jp>").
 -copyright("Craig Everett <ceverett@tsuriai.jp>").
 -license("GPL-3.0-or-later").
@@ -619,9 +619,9 @@ dry_run(TX) ->
 %% supplied accounts.
 
 dry_run(TX, Accounts) ->
-    case kb_current_hash() of
-        {ok, Hash} -> dry_run(TX, Accounts, Hash);
-        Error      -> Error
+    case top_block() of
+        {ok, #{"hash" := Hash}} -> dry_run(TX, Accounts, Hash);
+        Error                   -> Error
     end.
 
 
@@ -1453,7 +1453,7 @@ convert_function_spec(#{name := NameBin, arguments := Args, returns := Result})
 
 convert_arg(#{name := NameBin, type := TypeDef}) ->
     Name = binary_to_list(NameBin),
-    {ok, Type} = opaque_type([], TypeDef),
+    Type = opaque_type([], TypeDef),
     {Name, Type}.
 
 convert_namespace_typedefs(#{namespace := NS}) ->
@@ -1561,7 +1561,7 @@ opaque_type_name(Name)           -> binary_to_list(Name).
 annotate_function_specs([], _Types, Specs) ->
     Specs;
 annotate_function_specs([{Name, ArgsOpaque, ResultOpaque} | Rest], Types, Specs) ->
-    {ok, Args} = annotate_types(ArgsOpaque, Types, []),
+    {ok, Args} = annotate_bindings(ArgsOpaque, Types, []),
     {ok, Result} = annotate_type(ResultOpaque, Types),
     NewSpecs = maps:put(Name, {Args, Result}, Specs),
     annotate_function_specs(Rest, Types, NewSpecs).
@@ -2358,3 +2358,14 @@ state_coerce_test() ->
     {ok, {[], Output}} = aaci_lookup_spec(AACI, "init"),
     try_coerce(Output, 0, 0).
 
+param_test() ->
+    Contract = "
+        contract C =
+            type state = int
+            entrypoint init(x): state = x
+    ",
+    {ok, AACI} = aaci_from_string(Contract),
+    {ok, {[{"x", Input}], Output}} = aaci_lookup_spec(AACI, "init"),
+    try_coerce(Input, 0, 0),
+    try_coerce(Output, 0, 0).
+
diff --git a/src/hz_fetcher.erl b/src/hz_fetcher.erl
index 66de62d..d9b3049 100644
--- a/src/hz_fetcher.erl
+++ b/src/hz_fetcher.erl
@@ -1,5 +1,5 @@
 -module(hz_fetcher).
--vsn("0.3.1").
+-vsn("0.3.2").
 -author("Craig Everett <ceverett@tsuriai.jp>").
 -copyright("Craig Everett <ceverett@tsuriai.jp>").
 -license("MIT").
diff --git a/src/hz_man.erl b/src/hz_man.erl
index 9cdfe85..bd0fc12 100644
--- a/src/hz_man.erl
+++ b/src/hz_man.erl
@@ -9,7 +9,7 @@
 %%% @end
 
 -module(hz_man).
--vsn("0.3.1").
+-vsn("0.3.2").
 -behavior(gen_server).
 -author("Craig Everett <ceverett@tsuriai.jp>").
 -copyright("Craig Everett <ceverett@tsuriai.jp>").
diff --git a/src/hz_sup.erl b/src/hz_sup.erl
index 90bec77..856067c 100644
--- a/src/hz_sup.erl
+++ b/src/hz_sup.erl
@@ -9,7 +9,7 @@
 %%% @end
 
 -module(hz_sup).
--vsn("0.3.1").
+-vsn("0.3.2").
 -behaviour(supervisor).
 -author("Craig Everett <zxq9@zxq9.com>").
 -copyright("Craig Everett <zxq9@zxq9.com>").
diff --git a/zomp.meta b/zomp.meta
index 8be1d9a..0a9753b 100644
--- a/zomp.meta
+++ b/zomp.meta
@@ -4,7 +4,7 @@
 {prefix,"hz"}.
 {author,"Craig Everett"}.
 {desc,"Gajumaru interoperation library"}.
-{package_id,{"otpr","hakuzaru",{0,3,1}}}.
+{package_id,{"otpr","hakuzaru",{0,3,2}}}.
 {deps,[{"otpr","sophia",{8,0,1}},
        {"otpr","gmbytecode",{3,4,1}},
        {"otpr","gmserialization",{0,1,2}},