diff --git a/identity_iota_interaction/src/sdk_types/iota_types/crypto.rs b/identity_iota_interaction/src/sdk_types/iota_types/crypto.rs
index 0ad555fe6e..4f2181b025 100644
--- a/identity_iota_interaction/src/sdk_types/iota_types/crypto.rs
+++ b/identity_iota_interaction/src/sdk_types/iota_types/crypto.rs
@@ -31,8 +31,6 @@ use super::{
     base_types::IotaAddress, error::{IotaError, IotaResult}, iota_serde::Readable
 };
 
-const IOTA_PRIV_KEY_PREFIX: &str = "iotaprivkey";
-
 // Authority Objects
 pub type AuthorityKeyPair = BLS12381KeyPair;
 pub type AuthorityPublicKey = BLS12381PublicKey;
@@ -52,6 +50,9 @@ pub type NetworkPrivateKey = Ed25519PrivateKey;
 
 pub type DefaultHash = Blake2b256;
 
+pub const DEFAULT_EPOCH_ID: EpochId = 0;
+const IOTA_PRIV_KEY_PREFIX: &str = "iotaprivkey";
+
 // Account Keys
 //
 // * The following section defines the keypairs that are used by