diff --git a/Post/post_contract.go b/Post/post_contract.go
index d0d4817..ebf1878 100755
--- a/Post/post_contract.go
+++ b/Post/post_contract.go
@@ -1,6 +1,8 @@
 package Post
 
 import (
+	"strconv"
+
 	"github.com/nspcc-dev/neo-go/pkg/interop/native/oracle"
 	"github.com/nspcc-dev/neo-go/pkg/interop/native/std"
 	"github.com/nspcc-dev/neo-go/pkg/interop/runtime"
@@ -19,7 +21,8 @@ type Post struct {
 }
 
 const (
-	lastIndex = "_lastIndex"
+	lastIndex     = "_lastIndex"
+	all_posts_key = "all_posts"
 )
 
 func NewPost(authorId string, text string, postName string) {
@@ -42,9 +45,9 @@ func NewPost(authorId string, text string, postName string) {
 	storage.Put(ctx, post.id, std.Serialize(post))
 
 	updatePostIndex(authorId)
-	lastPostIndex := storage.Get(ctx, authorId+lastIndex)
+	lastPostIndex := storage.Get(ctx, authorId+lastIndex).(string)
 
-	storage.Put(ctx, authorId+lastPostIndex.(string), post.id)
+	storage.Put(ctx, authorId+lastPostIndex, post.id)
 }
 
 func CbGetUUID(url string, postData any, code int, result []byte) {
@@ -61,6 +64,19 @@ func CbGetUUID(url string, postData any, code int, result []byte) {
 	storage.Put(ctx, "lastPostId", string(result))
 }
 
+func appendPostToAllPosts(post Post) {
+	ctx := storage.GetContext()
+	all_posts := GetAllPosts()
+	posts := append(all_posts, post)
+	storage.Put(ctx, all_posts_key, posts)
+}
+
+func GetAllPosts() []Post {
+	ctx := storage.GetContext()
+	posts := std.Deserialize(storage.Get(ctx, all_posts_key).([]byte)).([]Post)
+	return posts
+}
+
 func GetPost(postId string) Post {
 
 	ctx := storage.GetReadOnlyContext()
@@ -72,6 +88,19 @@ func GetPost(postId string) Post {
 	return std.Deserialize(data.([]byte)).(Post)
 }
 
+func GetAllPostsByUser(userId string) []Post {
+	ctx := storage.GetReadOnlyContext()
+	var postsByUser []Post
+	i := 0
+	n := getPostIndex(userId)
+	for i < n {
+		post := storage.Get(ctx, userId+strconv.Itoa(i))
+		i++
+		postsByUser = append(postsByUser, std.Deserialize(post.([]byte)).(Post))
+	}
+	return postsByUser
+}
+
 func RatePost(isLike bool, postId string) {
 	ctx := storage.GetContext()
 	post := GetPost(postId)