diff --git a/crates/dojo-core/src/world/errors.cairo b/crates/dojo-core/src/world/errors.cairo
index ca1cadfb5c..a11359cf2b 100644
--- a/crates/dojo-core/src/world/errors.cairo
+++ b/crates/dojo-core/src/world/errors.cairo
@@ -40,6 +40,10 @@ pub fn resource_not_registered(resource: felt252) -> ByteArray {
     format!("Resource `{}` is not registered", resource)
 }
 
+pub fn resource_already_registered(resource: felt252) -> ByteArray {
+    format!("Resource `{}` is already registered", resource)
+}
+
 pub fn not_owner(caller: ContractAddress, resource: felt252) -> ByteArray {
     format!("Caller `{:?}` is not the owner of the resource `{}`", caller, resource)
 }
diff --git a/crates/dojo-core/src/world/world_contract.cairo b/crates/dojo-core/src/world/world_contract.cairo
index 7623bf607b..f2b151b64c 100644
--- a/crates/dojo-core/src/world/world_contract.cairo
+++ b/crates/dojo-core/src/world/world_contract.cairo
@@ -643,6 +643,12 @@ pub mod world {
             self.assert_caller_namespace_write_access(@namespace, namespace_hash);
 
             let selector = dispatcher.selector();
+
+            match self.resources.read(selector) {
+                Resource::Unregistered => {},
+                _ => panic_with_byte_array(@errors::resource_already_registered(selector))
+            };
+
             self.owners.write((selector, caller), true);
             self.resources.write(selector, Resource::Contract((class_hash, contract_address)));
 
diff --git a/crates/dojo-lang/src/manifest_test_data/compiler_cairo/manifests/dev/base/dojo-world.toml b/crates/dojo-lang/src/manifest_test_data/compiler_cairo/manifests/dev/base/dojo-world.toml
index ff32465d06..fcb2f0e910 100644
--- a/crates/dojo-lang/src/manifest_test_data/compiler_cairo/manifests/dev/base/dojo-world.toml
+++ b/crates/dojo-lang/src/manifest_test_data/compiler_cairo/manifests/dev/base/dojo-world.toml
@@ -1,6 +1,6 @@
 kind = "Class"
-class_hash = "0x6f4515274ee23404789c3351a77107d0ec07508530119822046600ca6948d6e"
-original_class_hash = "0x6f4515274ee23404789c3351a77107d0ec07508530119822046600ca6948d6e"
+class_hash = "0x5c4271c8cd454ceb8049d2b0724c99d12c2ef8077fc6ad325b18978f614aab0"
+original_class_hash = "0x5c4271c8cd454ceb8049d2b0724c99d12c2ef8077fc6ad325b18978f614aab0"
 abi = "manifests/dev/base/abis/dojo-world.json"
 tag = "dojo-world"
 manifest_name = "dojo-world"
diff --git a/crates/sozo/ops/src/tests/model.rs b/crates/sozo/ops/src/tests/model.rs
index fc84a9cfce..0b420d8bad 100644
--- a/crates/sozo/ops/src/tests/model.rs
+++ b/crates/sozo/ops/src/tests/model.rs
@@ -54,7 +54,7 @@ async fn test_model_ops(sequencer: &RunnerCtx) {
         )
         .await
         .unwrap(),
-        Felt::from_hex("0x68e3a53988f20d84c6652f25d6add070633a5d05f8c4ac68285cacb228afa14")
+        Felt::from_hex("0x237386e1b35190b45c7d0aa29b3957d84ba2d4d22c2c10f7511b3abf0d7bd73")
             .unwrap()
     );
 
diff --git a/examples/spawn-and-move/dojo_dev.toml b/examples/spawn-and-move/dojo_dev.toml
index b75849d8bf..a132488bf0 100644
--- a/examples/spawn-and-move/dojo_dev.toml
+++ b/examples/spawn-and-move/dojo_dev.toml
@@ -14,4 +14,4 @@ rpc_url = "http://localhost:5050/"
 # Default account for katana with seed = 0
 account_address = "0x6162896d1d7ab204c7ccac6dd5f8e9e7c25ecd5ae4fcb4ad32e57786bb46e03"
 private_key = "0x1800000000300000180000000000030000000000003006001800006600"
-world_address = "0x5fedbace16902d9ca4cdc1522f9fe156cd8c69a5d25e1436ee4b7b9933ad997"
+world_address = "0x15b584f1132fe386a0aa7a447e7073233a545ac4b84b361ed797edaa8f0f14"
diff --git a/examples/spawn-and-move/manifests/dev/base/dojo-world.toml b/examples/spawn-and-move/manifests/dev/base/dojo-world.toml
index ff32465d06..fcb2f0e910 100644
--- a/examples/spawn-and-move/manifests/dev/base/dojo-world.toml
+++ b/examples/spawn-and-move/manifests/dev/base/dojo-world.toml
@@ -1,6 +1,6 @@
 kind = "Class"
-class_hash = "0x6f4515274ee23404789c3351a77107d0ec07508530119822046600ca6948d6e"
-original_class_hash = "0x6f4515274ee23404789c3351a77107d0ec07508530119822046600ca6948d6e"
+class_hash = "0x5c4271c8cd454ceb8049d2b0724c99d12c2ef8077fc6ad325b18978f614aab0"
+original_class_hash = "0x5c4271c8cd454ceb8049d2b0724c99d12c2ef8077fc6ad325b18978f614aab0"
 abi = "manifests/dev/base/abis/dojo-world.json"
 tag = "dojo-world"
 manifest_name = "dojo-world"
diff --git a/examples/spawn-and-move/manifests/dev/deployment/manifest.json b/examples/spawn-and-move/manifests/dev/deployment/manifest.json
index a84095f780..8665507c3f 100644
--- a/examples/spawn-and-move/manifests/dev/deployment/manifest.json
+++ b/examples/spawn-and-move/manifests/dev/deployment/manifest.json
@@ -1,8 +1,8 @@
 {
   "world": {
     "kind": "WorldContract",
-    "class_hash": "0x6f4515274ee23404789c3351a77107d0ec07508530119822046600ca6948d6e",
-    "original_class_hash": "0x6f4515274ee23404789c3351a77107d0ec07508530119822046600ca6948d6e",
+    "class_hash": "0x5c4271c8cd454ceb8049d2b0724c99d12c2ef8077fc6ad325b18978f614aab0",
+    "original_class_hash": "0x5c4271c8cd454ceb8049d2b0724c99d12c2ef8077fc6ad325b18978f614aab0",
     "abi": [
       {
         "type": "impl",
@@ -1234,8 +1234,8 @@
         ]
       }
     ],
-    "address": "0x5fedbace16902d9ca4cdc1522f9fe156cd8c69a5d25e1436ee4b7b9933ad997",
-    "transaction_hash": "0x4c8e0d28e32c21f29f33ff68e245b65fcc91763abf53f284cce8c2274ff6115",
+    "address": "0x15b584f1132fe386a0aa7a447e7073233a545ac4b84b361ed797edaa8f0f14",
+    "transaction_hash": "0x715b5d1bde9766b6db3f8b903a0626343c553a91e199f96d721644d121e676b",
     "block_number": 3,
     "seed": "dojo_examples",
     "metadata": {
@@ -1255,7 +1255,7 @@
   "contracts": [
     {
       "kind": "DojoContract",
-      "address": "0x3287947f8080cdf20c0a6e88d50a8d824e04f035bd34550316e6768d87d35de",
+      "address": "0x54de18a0d4dcd51213c3375061fd5cd5a30dbefdb50c9718ae9a8004162abbd",
       "class_hash": "0x67a20ea91a4b9bb9cdb46cefc41dd6ca4c07c22d4d413205720963944fd817d",
       "original_class_hash": "0x67a20ea91a4b9bb9cdb46cefc41dd6ca4c07c22d4d413205720963944fd817d",
       "base_class_hash": "0x2427dd10a58850ac9a5ca6ce04b7771b05330fd18f2e481831ad903b969e6b2",
@@ -1686,7 +1686,7 @@
     },
     {
       "kind": "DojoContract",
-      "address": "0x6ee438f6082f930c1b874cfefa2e380b1bd8eb8d77374bf18e8224c5dd1819",
+      "address": "0x3af2ea94daa59a22d5b979004019de544dbf92a2e4ff5f4869abb7ded9ca669",
       "class_hash": "0x4590a27e4ec7366358ba5f60323777f301435ebbdd113ab02c54b947717530d",
       "original_class_hash": "0x4590a27e4ec7366358ba5f60323777f301435ebbdd113ab02c54b947717530d",
       "base_class_hash": "0x2427dd10a58850ac9a5ca6ce04b7771b05330fd18f2e481831ad903b969e6b2",
@@ -1925,7 +1925,7 @@
     },
     {
       "kind": "DojoContract",
-      "address": "0xd9e080358f8bcb8ca52182623e63b4777dbf54dedd3742bd86fabb3d1991ba",
+      "address": "0x7ba7852396ce1e20e332e6ad1af1a978c866d61d8ad3d2d58f618dac027c8e1",
       "class_hash": "0x67edb33671cd2f5b766d073e3dec53b03400761a20f349ea9628cf4c883b393",
       "original_class_hash": "0x67edb33671cd2f5b766d073e3dec53b03400761a20f349ea9628cf4c883b393",
       "base_class_hash": "0x2427dd10a58850ac9a5ca6ce04b7771b05330fd18f2e481831ad903b969e6b2",
@@ -2146,7 +2146,7 @@
     },
     {
       "kind": "DojoContract",
-      "address": "0x3fec924b42052f14a9c4bb48abae2068d66034e3cc6e063353b87a5659f5040",
+      "address": "0x3be251ef8450c757a5712e203eef1ce65a49678a3fe711df29012de99d61c8",
       "class_hash": "0x40e824b8814bafef18cce2cf68f5765e9c9a1c86f55a8491b0c2a4faebdcc87",
       "original_class_hash": "0x40e824b8814bafef18cce2cf68f5765e9c9a1c86f55a8491b0c2a4faebdcc87",
       "base_class_hash": "0x2427dd10a58850ac9a5ca6ce04b7771b05330fd18f2e481831ad903b969e6b2",
diff --git a/examples/spawn-and-move/manifests/dev/deployment/manifest.toml b/examples/spawn-and-move/manifests/dev/deployment/manifest.toml
index 1950d9ccd4..0bc300f306 100644
--- a/examples/spawn-and-move/manifests/dev/deployment/manifest.toml
+++ b/examples/spawn-and-move/manifests/dev/deployment/manifest.toml
@@ -1,10 +1,10 @@
 [world]
 kind = "WorldContract"
-class_hash = "0x6f4515274ee23404789c3351a77107d0ec07508530119822046600ca6948d6e"
-original_class_hash = "0x6f4515274ee23404789c3351a77107d0ec07508530119822046600ca6948d6e"
+class_hash = "0x5c4271c8cd454ceb8049d2b0724c99d12c2ef8077fc6ad325b18978f614aab0"
+original_class_hash = "0x5c4271c8cd454ceb8049d2b0724c99d12c2ef8077fc6ad325b18978f614aab0"
 abi = "manifests/dev/deployment/abis/dojo-world.json"
-address = "0x5fedbace16902d9ca4cdc1522f9fe156cd8c69a5d25e1436ee4b7b9933ad997"
-transaction_hash = "0x4c8e0d28e32c21f29f33ff68e245b65fcc91763abf53f284cce8c2274ff6115"
+address = "0x15b584f1132fe386a0aa7a447e7073233a545ac4b84b361ed797edaa8f0f14"
+transaction_hash = "0x715b5d1bde9766b6db3f8b903a0626343c553a91e199f96d721644d121e676b"
 block_number = 3
 seed = "dojo_examples"
 manifest_name = "dojo-world"
@@ -23,7 +23,7 @@ manifest_name = "dojo-base"
 
 [[contracts]]
 kind = "DojoContract"
-address = "0x3287947f8080cdf20c0a6e88d50a8d824e04f035bd34550316e6768d87d35de"
+address = "0x54de18a0d4dcd51213c3375061fd5cd5a30dbefdb50c9718ae9a8004162abbd"
 class_hash = "0x67a20ea91a4b9bb9cdb46cefc41dd6ca4c07c22d4d413205720963944fd817d"
 original_class_hash = "0x67a20ea91a4b9bb9cdb46cefc41dd6ca4c07c22d4d413205720963944fd817d"
 base_class_hash = "0x2427dd10a58850ac9a5ca6ce04b7771b05330fd18f2e481831ad903b969e6b2"
@@ -47,7 +47,7 @@ manifest_name = "dojo_examples-actions-40b6994c"
 
 [[contracts]]
 kind = "DojoContract"
-address = "0x6ee438f6082f930c1b874cfefa2e380b1bd8eb8d77374bf18e8224c5dd1819"
+address = "0x3af2ea94daa59a22d5b979004019de544dbf92a2e4ff5f4869abb7ded9ca669"
 class_hash = "0x4590a27e4ec7366358ba5f60323777f301435ebbdd113ab02c54b947717530d"
 original_class_hash = "0x4590a27e4ec7366358ba5f60323777f301435ebbdd113ab02c54b947717530d"
 base_class_hash = "0x2427dd10a58850ac9a5ca6ce04b7771b05330fd18f2e481831ad903b969e6b2"
@@ -61,7 +61,7 @@ manifest_name = "dojo_examples-dungeon-6620e0e6"
 
 [[contracts]]
 kind = "DojoContract"
-address = "0xd9e080358f8bcb8ca52182623e63b4777dbf54dedd3742bd86fabb3d1991ba"
+address = "0x7ba7852396ce1e20e332e6ad1af1a978c866d61d8ad3d2d58f618dac027c8e1"
 class_hash = "0x67edb33671cd2f5b766d073e3dec53b03400761a20f349ea9628cf4c883b393"
 original_class_hash = "0x67edb33671cd2f5b766d073e3dec53b03400761a20f349ea9628cf4c883b393"
 base_class_hash = "0x2427dd10a58850ac9a5ca6ce04b7771b05330fd18f2e481831ad903b969e6b2"
@@ -75,7 +75,7 @@ manifest_name = "dojo_examples-mock_token-31599eb2"
 
 [[contracts]]
 kind = "DojoContract"
-address = "0x3fec924b42052f14a9c4bb48abae2068d66034e3cc6e063353b87a5659f5040"
+address = "0x3be251ef8450c757a5712e203eef1ce65a49678a3fe711df29012de99d61c8"
 class_hash = "0x40e824b8814bafef18cce2cf68f5765e9c9a1c86f55a8491b0c2a4faebdcc87"
 original_class_hash = "0x40e824b8814bafef18cce2cf68f5765e9c9a1c86f55a8491b0c2a4faebdcc87"
 base_class_hash = "0x2427dd10a58850ac9a5ca6ce04b7771b05330fd18f2e481831ad903b969e6b2"
diff --git a/examples/spawn-and-move/manifests/release/base/dojo-world.toml b/examples/spawn-and-move/manifests/release/base/dojo-world.toml
index 796442c34f..c97d092ceb 100644
--- a/examples/spawn-and-move/manifests/release/base/dojo-world.toml
+++ b/examples/spawn-and-move/manifests/release/base/dojo-world.toml
@@ -1,6 +1,6 @@
 kind = "Class"
-class_hash = "0x6f4515274ee23404789c3351a77107d0ec07508530119822046600ca6948d6e"
-original_class_hash = "0x6f4515274ee23404789c3351a77107d0ec07508530119822046600ca6948d6e"
+class_hash = "0x5c4271c8cd454ceb8049d2b0724c99d12c2ef8077fc6ad325b18978f614aab0"
+original_class_hash = "0x5c4271c8cd454ceb8049d2b0724c99d12c2ef8077fc6ad325b18978f614aab0"
 abi = "manifests/release/base/abis/dojo-world.json"
 tag = "dojo-world"
 manifest_name = "dojo-world"
diff --git a/spawn-and-move-db.tar.gz b/spawn-and-move-db.tar.gz
index 75002076d4..a7f95e1b16 100644
Binary files a/spawn-and-move-db.tar.gz and b/spawn-and-move-db.tar.gz differ
diff --git a/types-test-db.tar.gz b/types-test-db.tar.gz
index 6cefbe42a5..5694495f0d 100644
Binary files a/types-test-db.tar.gz and b/types-test-db.tar.gz differ