diff --git a/Cargo.lock b/Cargo.lock
index e3c01c94..156ed17f 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -950,8 +950,8 @@ dependencies = [
 
 [[package]]
 name = "ethers"
-version = "0.5.3"
-source = "git+https://github.com/gakonst/ethers-rs#203b2e8ea303f36111968f8a143a03e50ecb98b2"
+version = "0.5.4"
+source = "git+https://github.com/gakonst/ethers-rs#1da62d65d2f8f4110a350cad9e23f02bf9f0ce78"
 dependencies = [
  "ethers-contract",
  "ethers-core",
@@ -964,7 +964,7 @@ dependencies = [
 [[package]]
 name = "ethers-contract"
 version = "0.5.3"
-source = "git+https://github.com/gakonst/ethers-rs#203b2e8ea303f36111968f8a143a03e50ecb98b2"
+source = "git+https://github.com/gakonst/ethers-rs#1da62d65d2f8f4110a350cad9e23f02bf9f0ce78"
 dependencies = [
  "ethers-contract-abigen",
  "ethers-contract-derive",
@@ -982,7 +982,7 @@ dependencies = [
 [[package]]
 name = "ethers-contract-abigen"
 version = "0.5.3"
-source = "git+https://github.com/gakonst/ethers-rs#203b2e8ea303f36111968f8a143a03e50ecb98b2"
+source = "git+https://github.com/gakonst/ethers-rs#1da62d65d2f8f4110a350cad9e23f02bf9f0ce78"
 dependencies = [
  "Inflector",
  "anyhow",
@@ -1003,7 +1003,7 @@ dependencies = [
 [[package]]
 name = "ethers-contract-derive"
 version = "0.5.3"
-source = "git+https://github.com/gakonst/ethers-rs#203b2e8ea303f36111968f8a143a03e50ecb98b2"
+source = "git+https://github.com/gakonst/ethers-rs#1da62d65d2f8f4110a350cad9e23f02bf9f0ce78"
 dependencies = [
  "ethers-contract-abigen",
  "ethers-core",
@@ -1016,8 +1016,8 @@ dependencies = [
 
 [[package]]
 name = "ethers-core"
-version = "0.5.4"
-source = "git+https://github.com/gakonst/ethers-rs#203b2e8ea303f36111968f8a143a03e50ecb98b2"
+version = "0.5.5"
+source = "git+https://github.com/gakonst/ethers-rs#1da62d65d2f8f4110a350cad9e23f02bf9f0ce78"
 dependencies = [
  "arrayvec 0.7.2",
  "bytes",
@@ -1045,7 +1045,7 @@ dependencies = [
 [[package]]
 name = "ethers-middleware"
 version = "0.5.3"
-source = "git+https://github.com/gakonst/ethers-rs#203b2e8ea303f36111968f8a143a03e50ecb98b2"
+source = "git+https://github.com/gakonst/ethers-rs#1da62d65d2f8f4110a350cad9e23f02bf9f0ce78"
 dependencies = [
  "async-trait",
  "ethers-contract",
@@ -1068,7 +1068,7 @@ dependencies = [
 [[package]]
 name = "ethers-providers"
 version = "0.5.4"
-source = "git+https://github.com/gakonst/ethers-rs#203b2e8ea303f36111968f8a143a03e50ecb98b2"
+source = "git+https://github.com/gakonst/ethers-rs#1da62d65d2f8f4110a350cad9e23f02bf9f0ce78"
 dependencies = [
  "async-trait",
  "auto_impl",
@@ -1097,7 +1097,7 @@ dependencies = [
 [[package]]
 name = "ethers-signers"
 version = "0.5.3"
-source = "git+https://github.com/gakonst/ethers-rs#203b2e8ea303f36111968f8a143a03e50ecb98b2"
+source = "git+https://github.com/gakonst/ethers-rs#1da62d65d2f8f4110a350cad9e23f02bf9f0ce78"
 dependencies = [
  "async-trait",
  "coins-bip32",
@@ -1117,10 +1117,11 @@ dependencies = [
 [[package]]
 name = "ethers-solc"
 version = "0.1.0"
-source = "git+https://github.com/gakonst/ethers-rs#203b2e8ea303f36111968f8a143a03e50ecb98b2"
+source = "git+https://github.com/gakonst/ethers-rs#1da62d65d2f8f4110a350cad9e23f02bf9f0ce78"
 dependencies = [
  "colored",
  "ethers-core",
+ "glob",
  "hex",
  "home",
  "md-5",
@@ -1194,7 +1195,7 @@ checksum = "37ab347416e802de484e4d03c7316c48f1ecb56574dfd4a46a80f173ce1de04d"
 [[package]]
 name = "fluidex-common"
 version = "0.1.0"
-source = "git+https://github.com/fluidex/common-rs?branch=master#f277677d893feb5eecd30d399a8ccb96efaf1a23"
+source = "git+https://github.com/fluidex/common-rs?branch=master#3d4b17f343fe198de3699971ef3ca35f8796c2e3"
 dependencies = [
  "anyhow",
  "babyjubjub-rs",
@@ -1424,6 +1425,12 @@ version = "0.25.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f0a01e0497841a3b2db4f8afa483cce65f7e96a3498bd6c541734792aeac8fe7"
 
+[[package]]
+name = "glob"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9b919933a397b79c37e33b77bb2aa3dc8eb6e165ad809e58ff75bc7db2e34574"
+
 [[package]]
 name = "group"
 version = "0.10.0"
diff --git a/src/bin/main.rs b/src/bin/main.rs
index 84c05066..5d812898 100644
--- a/src/bin/main.rs
+++ b/src/bin/main.rs
@@ -2,17 +2,11 @@
 #![allow(dead_code)]
 
 use crossbeam_channel::RecvTimeoutError;
+use fluidex_common::db::models::tablenames;
+use fluidex_common::db::models::task::TaskStatus;
+use fluidex_common::db::MIGRATOR;
 use fluidex_common::non_blocking_tracing;
-use fluidex_common::{
-    db::{
-        models::{
-            tablenames,
-            task::{CircuitType, TaskStatus},
-        },
-        MIGRATOR,
-    },
-    types::FrExt,
-};
+use fluidex_common::types::FrExt;
 use rollup_state_manager::config::Settings;
 use rollup_state_manager::grpc::run_grpc_server;
 use rollup_state_manager::msg::{msg_loader, msg_processor};
@@ -240,6 +234,7 @@ async fn save_block_to_db(pool: &PgPool, block: &L2Block) -> anyhow::Result<()>
 }
 
 async fn save_task_to_db(pool: &PgPool, block: L2Block) -> anyhow::Result<()> {
+    let tx_num = block.detail.encoded_txs.len();
     let input = L2BlockSerde::from(block.detail);
     let task_id = unique_task_id();
 
@@ -248,7 +243,7 @@ async fn save_task_to_db(pool: &PgPool, block: L2Block) -> anyhow::Result<()> {
         tablenames::TASK
     ))
     .bind(task_id)
-    .bind(CircuitType::BLOCK)
+    .bind(format!("block_{}", tx_num))
     .bind(block.block_id as i64) // TODO: will it overflow?
     .bind(sqlx::types::Json(input))
     .bind(TaskStatus::Inited)