diff --git a/src/icp_prototype_backend/src/account_identifier.rs b/src/icp_prototype_backend/src/account_identifier.rs
deleted file mode 100644
index 0e945a5..0000000
--- a/src/icp_prototype_backend/src/account_identifier.rs
+++ /dev/null
@@ -1,49 +0,0 @@
-use candid::{CandidType, Principal};
-use crc32fast::Hasher;
-use hex;
-use serde::{Deserialize, Serialize};
-use sha2::{Digest, Sha224};
-
-#[derive(CandidType, Deserialize, Clone, Hash, Debug, PartialEq, Eq, Copy)]
-#[serde(transparent)]
-pub struct Subaccount(pub [u8; 32]);
-
-#[derive(CandidType, Deserialize, Serialize, Debug, Clone, PartialEq, Copy, Eq)]
-pub struct AccountIdentifier {
-    pub hash: [u8; 28],
-}
-
-const SUB_ACCOUNT_ZERO: Subaccount = Subaccount([0; 32]);
-const ACCOUNT_DOMAIN_SEPERATOR: &[u8] = b"\x0Aaccount-id";
-
-impl AccountIdentifier {
-    pub fn new(account: Principal, sub_account: Option<Subaccount>) -> AccountIdentifier {
-        let mut hash = Sha224::new();
-        hash.update(ACCOUNT_DOMAIN_SEPERATOR);
-        hash.update(account.as_slice());
-
-        let sub_account = sub_account.unwrap_or(SUB_ACCOUNT_ZERO);
-        hash.update(&sub_account.0[..]);
-
-        AccountIdentifier {
-            hash: hash.finalize().into(),
-        }
-    }
-
-    fn generate_checksum(&self) -> [u8; 4] {
-        let mut hasher = Hasher::new();
-        hasher.update(&self.hash);
-        hasher.finalize().to_be_bytes()
-    }
-
-    pub fn to_address(self) -> [u8; 32] {
-        let mut result = [0u8; 32];
-        result[0..4].copy_from_slice(&self.generate_checksum());
-        result[4..32].copy_from_slice(&self.hash);
-        result
-    }
-}
-
-pub fn to_hex_string(bytes: [u8; 32]) -> String {
-    hex::encode(bytes.as_ref())
-}