diff --git a/node/src/chain_spec.rs b/node/src/chain_spec.rs
index 990a4c1651..a8ee37e8f7 100644
--- a/node/src/chain_spec.rs
+++ b/node/src/chain_spec.rs
@@ -1,5 +1,5 @@
 use dock_testnet_runtime::{
-    AccountId, AuraConfig, BalancesConfig, GenesisConfig, GrandpaConfig, Signature,
+    AuraConfig, BalancesConfig, GenesisConfig, GrandpaConfig,
     SudoConfig, SystemConfig, WASM_BINARY,
 };
 use sp_finality_grandpa::AuthorityId as GrandpaId;
@@ -7,7 +7,12 @@ use sc_service::ChainType;
 use sp_consensus_aura::sr25519::AuthorityId as AuraId;
 use sp_core::crypto::Ss58Codec;
 use sp_core::{sr25519, Pair, Public};
-use sp_runtime::traits::{IdentifyAccount, Verify};
+use sp_runtime::{
+    traits::{IdentifyAccount, Verify},
+    MultiSignature,
+};
+
+type AccountId = <<MultiSignature as Verify>::Signer as IdentifyAccount>::AccountId;
 
 // Note this is the URL for the telemetry server
 //const STAGING_TELEMETRY_URL: &str = "wss://telemetry.polkadot.io/submit/";
@@ -22,7 +27,7 @@ pub fn get_from_seed<TPublic: Public>(seed: &str) -> <TPublic::Pair as Pair>::Pu
         .public()
 }
 
-type AccountPublic = <Signature as Verify>::Signer;
+type AccountPublic = <MultiSignature as Verify>::Signer;
 
 /// Helper function to generate an account ID from seed
 pub fn get_account_id_from_seed<TPublic: Public>(seed: &str) -> AccountId
diff --git a/runtime/src/blob.rs b/runtime/src/blob.rs
index a89e33fa10..6532471a4a 100644
--- a/runtime/src/blob.rs
+++ b/runtime/src/blob.rs
@@ -6,6 +6,7 @@ use frame_support::{
 };
 use system::ensure_signed;
 use codec::{Decode, Encode};
+use alloc::vec::Vec;
 
 use crate::did::{self, Did, DidSignature};
 
diff --git a/src/main.rs b/src/main.rs
deleted file mode 100644
index e69de29bb2..0000000000
diff --git a/src/service.rs b/src/service.rs
deleted file mode 100644
index e69de29bb2..0000000000