diff --git a/CCTF_Solutions_main/.gitignore b/CCTF_Solutions_main/.gitignore
index b0126f1..d29e6db 100644
--- a/CCTF_Solutions_main/.gitignore
+++ b/CCTF_Solutions_main/.gitignore
@@ -1,8 +1,5 @@
 *.bpmn
-root.zok
-stateChange.zok
-hash.zok
-hash
+
 
 # Compiled class file
 *.class
diff --git a/CCTF_Solutions_main/hash.zok b/CCTF_Solutions_main/hash.zok
new file mode 100644
index 0000000..9a271b4
--- /dev/null
+++ b/CCTF_Solutions_main/hash.zok
@@ -0,0 +1,8 @@
+import "hashes/sha256/sha256Padded.zok" as sha256;
+
+def main(public u32[8] hash,private u8[8] flag) {
+     u32[8] genHash = sha256(flag);
+     log("Hash: {} {} {} {} {} {} {} {}",genHash[0],genHash[1],genHash[2],genHash[3],genHash[4],genHash[5],genHash[6],genHash[7]);
+     //assert(genHash == hash);
+     return;
+}
diff --git a/CCTF_Solutions_main/root.zok b/CCTF_Solutions_main/root.zok
new file mode 100644
index 0000000..4c0466c
--- /dev/null
+++ b/CCTF_Solutions_main/root.zok
@@ -0,0 +1,11 @@
+import "hashes/sha256/sha256Padded.zok" as sha256;
+from "utils/casts.zok" import cast;
+
+def main(public u32[8] hash,public u32[5] address,private u8[8] flag) {
+     u8[20] addr8 = cast(address);
+     u8[28] forHash = [...addr8,...flag];
+     u32[8] genHash = sha256(flag);
+     log("Hash: {} {} {} {} {} {} {} {}",genHash[0],genHash[1],genHash[2],genHash[3],genHash[4],genHash[5],genHash[6],genHash[7]);
+     assert(genHash == hash);
+     return;
+}
\ No newline at end of file