diff --git a/src/Collection/Collection.service.ts b/src/Collection/Collection.service.ts
index 42927979..5173221e 100644
--- a/src/Collection/Collection.service.ts
+++ b/src/Collection/Collection.service.ts
@@ -608,11 +608,35 @@ export class CollectionService {
       return acc
     }, {} as Record<string, ThirdParty>)
     const thirdPartyIds = Object.keys(thirdPartyById)
-    const allCollections = await Collection.findAll({
+    let allCollections = await Collection.findAll({
       ...params,
       thirdPartyIds,
     })
 
+    // Verify collections ownership
+    if (params.address !== undefined) {
+      const collectionsIds = allCollections.map(
+        (collection) => collection.contract_address!
+      )
+      const remoteCollections = await collectionAPI.fetchCollections({
+        ids: collectionsIds,
+      })
+
+      if (remoteCollections.length > 0) {
+        // Create a map of remote collections for fast lookup
+        const remoteCollectionMap = Object.fromEntries(
+          remoteCollections.map(({ id, creator }) => [id, creator])
+        )
+
+        // If exists the remote collection, filter by the creator field
+        allCollections = allCollections.filter(
+          ({ contract_address }) =>
+            !remoteCollectionMap[contract_address!] ||
+            remoteCollectionMap[contract_address!] === params.address
+        )
+      }
+    }
+
     // Set if the collection is programmatic
     for (const collection of allCollections) {
       if (
diff --git a/src/Item/Item.service.ts b/src/Item/Item.service.ts
index 20b738b5..c966f8a7 100644
--- a/src/Item/Item.service.ts
+++ b/src/Item/Item.service.ts
@@ -98,10 +98,10 @@ export class ItemService {
 
     const [dbItemCollection, itemCollection] = await Promise.all([
       collectionId
-        ? this.collectionService.getDBCollection(collectionId)
+        ? this.collectionService.getCollection(collectionId)
         : undefined,
       isMovingItemFromACollectionToAnother || isMovingOrphanItemIntoACollection
-        ? this.collectionService.getDBCollection(item.collection_id!)
+        ? this.collectionService.getCollection(item.collection_id!)
         : undefined,
     ])
 
diff --git a/src/ethereum/api/Bridge.ts b/src/ethereum/api/Bridge.ts
index 3fbebf94..fd5cf8e6 100644
--- a/src/ethereum/api/Bridge.ts
+++ b/src/ethereum/api/Bridge.ts
@@ -406,6 +406,7 @@ export class Bridge {
       in_catalyst,
       is_published: true,
       is_approved: remoteCollection.isApproved,
+      eth_address: remoteCollection.creator,
       price: remoteItem.price,
       beneficiary: remoteItem.beneficiary,
       blockchain_item_id: remoteItem.blockchainId,
diff --git a/src/ethereum/api/collection.ts b/src/ethereum/api/collection.ts
index 2b2e77e4..9f8a5134 100644
--- a/src/ethereum/api/collection.ts
+++ b/src/ethereum/api/collection.ts
@@ -23,6 +23,7 @@ import {
 } from './BaseGraphAPI'
 
 export type CollectionQueryFilters = {
+  ids?: string[]
   isApproved?: boolean
 }
 
@@ -35,9 +36,13 @@ const getCollectionByIdQuery = () => gql`
   ${collectionFragment()}
 `
 
-const getCollectionsQuery = ({ isApproved }: CollectionQueryFilters) => {
+const getCollectionsQuery = ({ ids, isApproved }: CollectionQueryFilters) => {
   const where: string[] = []
 
+  if (ids !== undefined && ids.length > 0) {
+    where.push(`id_in: ${JSON.stringify(ids)}`)
+  }
+
   if (isApproved !== undefined) {
     where.push(`isApproved : ${isApproved}`)
   }