diff --git a/src/ethereum/contracts.rs b/src/ethereum/contracts.rs
index 376efb6..241d973 100644
--- a/src/ethereum/contracts.rs
+++ b/src/ethereum/contracts.rs
@@ -16,10 +16,9 @@ use super::sync::{
 };
 use super::utils::parse_address;
 
-pub const ADAPTER: &str = "IAdapter";
-pub const SUBSCRIPTION: &str = "ISubscription";
-pub const ERC20: &str = "IERC20";
-pub const ERC721: &str = "IERC721Metadata";
+const ADAPTER: &str = "IAdapter";
+const SUBSCRIPTION: &str = "ISubscription";
+const ERC721: &str = "IERC721Metadata";
 
 #[derive(thiserror::Error, Debug)]
 pub enum ArtifactError {
@@ -33,7 +32,7 @@ pub enum ArtifactError {
     KeyError,
 }
 
-pub fn load_abi(
+fn load_abi(
     contract_dir: &Path,
     contract_name: &str,
 ) -> Result<Vec<u8>, ArtifactError> {
@@ -47,14 +46,13 @@ pub fn load_abi(
     Ok(contract_abi)
 }
 
+#[derive(Clone)]
 pub struct ContractSet {
     pub web3: Web3<Http>,
     // Last synced block
     pub current_block: u64,
 
-    #[allow(dead_code)]
     pub adapter: Contract<Http>,
-
     pub collectible: Contract<Http>,
     pub subscription: Contract<Http>,
 }
diff --git a/src/ethereum/gate.rs b/src/ethereum/gate.rs
index 3519243..e5cfd9e 100644
--- a/src/ethereum/gate.rs
+++ b/src/ethereum/gate.rs
@@ -1,25 +1,15 @@
-use web3::contract::{Contract, Options};
+use web3::contract::Options;
 
-use crate::config::BlockchainConfig;
-use super::api::connect;
-use super::contracts::{ADAPTER, load_abi};
+use super::contracts::ContractSet;
 use super::errors::EthereumError;
 use super::utils::parse_address;
 
 pub async fn is_allowed_user(
-    config: &BlockchainConfig,
+    contract_set: &ContractSet,
     user_address: &str,
 ) -> Result<bool, EthereumError> {
-    let web3 = connect(&config.api_url)?;
-    let adapter_abi = load_abi(&config.contract_dir, ADAPTER)?;
-    let adapter_address = parse_address(&config.contract_address)?;
-    let adapter = Contract::from_json(
-        web3.eth(),
-        adapter_address,
-        &adapter_abi,
-    )?;
     let user_address = parse_address(user_address)?;
-    let result: bool = adapter.query(
+    let result: bool = contract_set.adapter.query(
         "isAllowedUser", (user_address,),
         None, Options::default(), None,
     ).await?;
diff --git a/src/main.rs b/src/main.rs
index cbbd520..61f8d26 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -51,16 +51,15 @@ async fn main() -> std::io::Result<()> {
         config.environment,
     );
 
-    let maybe_contract_set = if let Some(blockchain_config) = &config.blockchain {
+    let maybe_blockchain = if let Some(blockchain_config) = &config.blockchain {
         // Create blockchain interface
         get_contracts(blockchain_config, &config.storage_dir).await
-            .map_err(|err| log::error!("{}", err))
-            .ok()
+            .map(Some).unwrap()
     } else {
         None
     };
 
-    scheduler::run(config.clone(), maybe_contract_set, db_pool.clone());
+    scheduler::run(config.clone(), maybe_blockchain.clone(), db_pool.clone());
     log::info!("scheduler started");
 
     let http_socket_addr = format!(
@@ -117,6 +116,7 @@ async fn main() -> std::io::Result<()> {
             .app_data(web::JsonConfig::default().limit(MAX_UPLOAD_SIZE))
             .app_data(web::Data::new(config.clone()))
             .app_data(web::Data::new(db_pool.clone()))
+            .app_data(web::Data::new(maybe_blockchain.clone()))
             .app_data(web::Data::clone(&inbox_mutex))
             .service(actix_files::Files::new(
                 "/media",
diff --git a/src/mastodon_api/accounts/views.rs b/src/mastodon_api/accounts/views.rs
index e07299b..e513d54 100644
--- a/src/mastodon_api/accounts/views.rs
+++ b/src/mastodon_api/accounts/views.rs
@@ -11,6 +11,7 @@ use crate::activitypub::deliverer::deliver_activity;
 use crate::config::Config;
 use crate::database::{Pool, get_database_client};
 use crate::errors::{DatabaseError, HttpError, ValidationError};
+use crate::ethereum::contracts::ContractSet;
 use crate::ethereum::eip4361::verify_eip4361_signature;
 use crate::ethereum::gate::is_allowed_user;
 use crate::ethereum::identity::{
@@ -68,6 +69,7 @@ use super::types::{
 pub async fn create_account(
     config: web::Data<Config>,
     db_pool: web::Data<Pool>,
+    maybe_blockchain: web::Data<Option<ContractSet>>,
     account_data: web::Json<AccountCreateData>,
 ) -> Result<HttpResponse, HttpError> {
     let db_client = &mut **get_database_client(&db_pool).await?;
@@ -103,16 +105,19 @@ pub async fn create_account(
     };
     assert!(password_hash.is_some() || wallet_address.is_some());
 
-    if let Some(blockchain_config) = config.blockchain.as_ref() {
+    if let Some(contract_set) = maybe_blockchain.as_ref() {
         // Wallet address is required if blockchain integration is enabled
         let wallet_address = wallet_address.as_ref()
             .ok_or(ValidationError("wallet address is required"))?;
-        let is_allowed = is_allowed_user(blockchain_config, wallet_address).await
+        let is_allowed = is_allowed_user(contract_set, wallet_address).await
             .map_err(|_| HttpError::InternalError)?;
         if !is_allowed {
             return Err(ValidationError("not allowed to sign up").into());
-        }
-    }
+        };
+    } else {
+        assert!(config.blockchain.is_none());
+    };
+
     // Generate RSA private key for actor
     let private_key = match web::block(generate_private_key).await {
         Ok(Ok(private_key)) => private_key,